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Re: Review of base64.diff and german2.diff

 

Hi Monty,

thanks for review.

I have addressed most of your suggestions. See the new version attached,
and the detailed comments inline:


On 09/12/2013 04:32 PM, Michael Widenius wrote:

Hi!

Here is the review for the code that we should put into 10.0

First the base64:

=== modified file 'mysql-test/t/func_str.test'
--- mysql-test/t/func_str.test	2013-05-07 11:05:09 +0000
+++ mysql-test/t/func_str.test	2013-08-28 13:14:24 +0000
@@ -1555,3 +1555,118 @@ drop table t1,t2;
  --echo # End of 5.5 tests
  --echo #

+
+--echo #
+--echo # Start of 5.6 tests
+--echo #

Shouldn't this be start of 10.0 tests ?
(I know that this code is from MySQL 5.6, but still for us this is 10.0...)

This code is (almost) copy-and-paste from MySQL-5.6.
I think it's a good idea when looking inside a test file
to be able to see which tests are coming from MySQL-5.6,
and which tests are coming from MariaDB-10.0.

I'd suggest to keep "Start of 5.6 tests" in this particular case,
and also when merging the tests for the other merged MySQL-5.6 features.



=== modified file 'mysys/base64.c'
--- mysys/base64.c	2011-06-30 15:46:53 +0000
+++ mysys/base64.c	2013-03-09 06:22:59 +0000
@@ -1,5 +1,4 @@
-/* Copyright (c) 2003-2008 MySQL AB, 2009 Sun Microsystems, Inc.
-   Use is subject to license terms.
+/* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.

Removed 'all rights reserved'. You can't have that for GPL code.

If there is any new code from us, please add a copyright message for the
MariaDB foundation too!

Removed 'all rights reserved' and added "MariaDB", as there are some
our own changes.



     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -25,6 +24,28 @@ static char base64_table[] = "ABCDEFGHIJ
                               "abcdefghijklmnopqrstuvwxyz"
                               "0123456789+/";

+/**
+ * Maximum length base64_needed_encoded_length()
+ * can handle without overflow.
+ */
+int
+base64_encode_max_arg_length()
+{
+#if (SIZEOF_INT == 8)
+  /*
+    6827690988321067803 ->   9223372036854775805
+    6827690988321067804 ->  -9223372036854775807
+  */

Please describe from where the following number comes from
(so that anyone can recalculate and check the number if needed):

I added more comments where these numbers come from.


+  return 0x5EC0D4C77B03531BLL
+#else
+  /*
+    1589695686 ->  2147483646
+    1589695687 -> -2147483645
+  */
+  return 0x5EC0D4C6;
+#endif
+}
+

  int
  base64_needed_encoded_length(int length_of_data)
@@ -39,6 +60,21 @@ base64_needed_encoded_length(int length_
  }


+/**
+ * Maximum length base64_needed_decoded_length()
+ * can handle without overflow.
+ */
+int
+base64_decode_max_arg_length()
+{

The following also need a comment.

Also added comments.


+#if (SIZEOF_INT == 8)
+  return 0x2AAAAAAAAAAAAAAALL;
+#else
+  return 0x2AAAAAAA;
+#endif
+}
+
+

<cut>

+/**
+ * Get the next character from a base64 encoded stream.
+ * Skip spaces, then scan the next base64 character or a pad character
+ * and collect bits into decoder->c.
+ *
+ * @param  decoder  Pointer to MY_BASE64_DECODER
+ * @return
+ *  FALSE on success (a valid base64 encoding character found)
+ *  TRUE  on error (unexpected character or unexpected end-of-input found)
+ */

Add an empty line here.

Done.


It would also be good to have a good description of the base64 format
in this file so that one can understand what the functions are
supposed to do (or at least a link to the specification).

Some thing I figured out by asking bar on IRC:

- We never generate spaces
- When decoding, we allow spaces anywhere.
- The end of an 64 base  decoded string is always padded with '='
   so that the final length is dividable with 4.

I added a reference to http://en.wikipedia.org/wiki/Base64,
as well all added these your comments in proper places of the code.



+static inline my_bool
+my_base64_decoder_getch(MY_BASE64_DECODER *decoder)

Remove inline from the above; It's likely to make the code slower, not
faster as this is a big function with lot of if's.

Removed "inline".


  {
-  char b[3];
-  size_t i= 0;
-  char *dst_base= (char *)dst;
-  char const *src= src_base;
-  char *d= dst_base;
-  size_t j;
+  if (my_base64_decoder_skip_spaces(decoder))
+    return TRUE; /* End-of-input */

-  while (i < len)
+  if (!my_base64_add(decoder)) /* Valid base64 character found */
    {
-    unsigned c= 0;
-    size_t mark= 0;
+    if (decoder->mark)
+    {
+      /* If we have scanned '=' already, then only '=' is valid */
+      DBUG_ASSERT(decoder->state == 3);
+      decoder->error= 1;
+      decoder->src--;
+      return TRUE; /* expected '=', but encoding character found */
+    }
+    decoder->state++;
+    return FALSE;
+  }

If you want to have the funtion inline, then move the following to
another not inline function;  We don't need to generate code for this
for every function call:

+
+  /* Process error */
+  switch (decoder->state)
+  {
+  case 0:
+  case 1:
+    decoder->src--;
+    return TRUE; /* base64 character expected */
+    break;
+
+  case 2:
+  case 3:
+    if (decoder->src[-1] == '=')
+    {
+      decoder->error= 0; /* Not an error - it's a pad character */
+      decoder->mark++;
+    }
+    else
+    {
+      decoder->src--;
+      return TRUE; /* base64 character or '=' expected */
+    }
+    break;
+  default:
+    DBUG_ASSERT(0);
+    return TRUE; /* Wrong state, should not happen */
+  }

<cut>

Add to the comment for base64_decode that the 'dst' buffer has to be
at least 2 character longer than what is needed to decode src_base.

I added this comment:

* Note: 'dst' must have sufficient space to store the decoded data.
* Use base64_needed_decoded_length() to calculate the correct space size.





+int
+base64_decode(const char *src_base, size_t len,
+              void *dst, const char **end_ptr, int flags)
+{
+    if (my_base64_decoder_getch(&decoder) ||
+        my_base64_decoder_getch(&decoder) ||
+        my_base64_decoder_getch(&decoder) ||
+        my_base64_decoder_getch(&decoder))
+      break;

Generating the error handling with a switch for every of the
above is wasteful. See previous comment.

Right. my_base64_decoder_getch() is not inline anymore.


+  /* Return error if there are more non-space characters */
+  decoder.state= 0;
+  if (!my_base64_decoder_skip_spaces(&decoder))
+    decoder.error= 1;
+
    if (end_ptr != NULL)

Note that base64_needed_decoded_length() used ceil() when it's not needed.

Removed.



<cut>

=== modified file 'sql/item_strfunc.cc'
@@ -451,6 +452,101 @@ void Item_func_aes_decrypt::fix_length_a
     set_persist_maybe_null(1);
  }

+
+void Item_func_to_base64::fix_length_and_dec()
+{
+  maybe_null= args[0]->maybe_null;
+  collation.set(default_charset(), DERIVATION_COERCIBLE, MY_REPERTOIRE_ASCII);

Maybe better to cast both arguments to (ulonglong) as the rest of the code
is depending on this.

Also, why is base64_encode_max_arg_length() int instead of uint or
even better size_t?

This is because base64_encode() and base64_decode() are used
in the replication code using "int" as return value.

When exposing TO_BASE64() and FROM_BASE64() to the SQL level,
I did not want to touch the replication code.


+  if (args[0]->max_length > (uint) base64_encode_max_arg_length())
+  {
+    maybe_null= 1;
+    fix_char_length_ulonglong((ulonglong) base64_encode_max_arg_length());
+  }
+  else
+  {
+    int length= base64_needed_encoded_length((int) args[0]->max_length);
+    DBUG_ASSERT(length > 0);

Don't think assert is needed as the function gurantees it already.

+    fix_char_length_ulonglong((ulonglong) length - 1);
+  }
+}

<cut>

+String *Item_func_from_base64::val_str(String *str)
+{
+  String *res= args[0]->val_str_ascii(str);
+  bool too_long= false;
+  int length;
+  const char *end_ptr;
+
+  if (!res ||
+      res->length() > (uint) base64_decode_max_arg_length() ||
+      (too_long=
+       ((uint) (length= base64_needed_decoded_length((int) res->length())) >
+        current_thd->variables.max_allowed_packet)) ||
+      tmp_value.alloc((uint) length) ||
+      (length= base64_decode(res->ptr(), (int) res->length(),
+                             (char *) tmp_value.ptr(), &end_ptr, 0)) < 0 ||
+      end_ptr < res->ptr() + res->length())
+  {

Shouldn't we get a readable error or warning if the string contained wrong
characters?
Now it looks like we will just return null.

Something like 'Malformed base64 string. Error at position %d" would
be nice.

Good idea. I have added a warning. Now it looks clear what went wrong
if FROM_BASE64() returns NULL.




+    null_value= 1; // NULL input, too long input, OOM, or badly formed input
+    if (too_long)
+    {
+      push_warning_printf(current_thd, Sql_condition::WARN_LEVEL_WARN,
+                          ER_WARN_ALLOWED_PACKET_OVERFLOWED,
+                          ER(ER_WARN_ALLOWED_PACKET_OVERFLOWED), func_name(),
+                          current_thd->variables.max_allowed_packet);
+    }
+    return 0;
+  }
+  tmp_value.length((uint) length);
+  null_value= 0;
+  return &tmp_value;
+}

<cut>

<cut>

=== modified file 'include/base64.h'
--- include/base64.h	2013-03-19 14:53:48 +0000
+++ include/base64.h	2013-08-28 11:49:26 +0000
@@ -27,11 +27,21 @@ extern "C" {
 int base64_needed_encoded_length(int length_of_data);
 
 /*
+  Maximum length base64_encode_needed_length() can accept with no overflow.
+*/
+int base64_encode_max_arg_length(void);
+
+/*
   Calculate how much memory needed for dst of base64_decode()
 */
 int base64_needed_decoded_length(int length_of_encoded_data);
 
 /*
+  Maximum length base64_decode_needed_length() can accept with no overflow.
+*/
+int base64_decode_max_arg_length();
+
+/*
   Encode data as a base64 string
 */
 int base64_encode(const void *src, size_t src_len, char *dst);
@@ -40,7 +50,10 @@ int base64_encode(const void *src, size_
   Decode a base64 string into data
 */
 int base64_decode(const char *src, size_t src_len,
-                  void *dst, const char **end_ptr);
+                  void *dst, const char **end_ptr, int flags);
+
+/* Allow multuple chunks 'AAA= AA== AA==', binlog uses this */
+#define MY_BASE64_DECODE_ALLOW_MULTIPLE_CHUNKS 1
 
 
 #ifdef __cplusplus

=== modified file 'mysql-test/r/func_str.result'
--- mysql-test/r/func_str.result	2013-05-07 11:05:09 +0000
+++ mysql-test/r/func_str.result	2013-09-17 10:16:38 +0000
@@ -2925,3 +2925,1549 @@ drop table t1,t2;
 #
 # End of 5.5 tests
 #
+#
+# Start of 5.6 tests
+#
+#
+# WL#5510 Functions to_base64 and from_base64
+#
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',63)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(85) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFh
+YWFhYWFh	85
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(63) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	63
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',62)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(85) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFh
+YWFhYWE=	85
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(63) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	62
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',61)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(85) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFh
+YWFhYQ==	85
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(63) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	61
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',60)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(81) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFh
+YWFh	81
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(60) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	60
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',59)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(81) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFh
+YWE=	81
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(60) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	59
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',58)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(81) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFh
+YQ==	81
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(60) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	58
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',57)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(76) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFh	76
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(57) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	57
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',56)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(76) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWE=	76
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(57) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	56
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',55)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(76) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYQ==	76
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(57) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	55
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',54)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(72) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFh	72
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(54) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	54
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',53)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(72) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWE=	72
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(54) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	53
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',52)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(72) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYQ==	72
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(54) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	52
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',51)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(68) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFh	68
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(51) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	51
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',50)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(68) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWE=	68
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(51) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	50
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',49)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(68) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYQ==	68
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(51) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	49
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',48)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(64) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFh	64
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(48) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	48
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',47)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(64) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWE=	64
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(48) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	47
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',46)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(64) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYQ==	64
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(48) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	46
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',45)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(60) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFh	60
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(45) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	45
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',44)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(60) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWE=	60
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(45) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	44
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',43)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(60) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYQ==	60
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(45) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	43
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',42)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(56) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFh	56
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(42) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	42
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',41)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(56) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWE=	56
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(42) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	41
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',40)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(56) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYQ==	56
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(42) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	40
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',39)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(52) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFh	52
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(39) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	39
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',38)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(52) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWE=	52
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(39) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	38
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',37)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(52) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYQ==	52
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(39) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	37
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',36)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(48) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFh	48
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(36) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	36
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',35)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(48) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWE=	48
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(36) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	35
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',34)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(48) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYQ==	48
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(36) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	34
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',33)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(44) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFh	44
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(33) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	33
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',32)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(44) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWE=	44
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(33) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	32
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',31)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(44) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYQ==	44
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(33) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	31
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',30)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(40) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFh	40
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(30) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	30
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',29)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(40) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWE=	40
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(30) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaa	29
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',28)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(40) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYQ==	40
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(30) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaaa	28
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',27)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(36) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFh	36
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(27) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaaa	27
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',26)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(36) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWE=	36
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(27) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaaa	26
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',25)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(36) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYQ==	36
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(27) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaaa	25
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',24)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(32) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFh	32
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(24) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaaa	24
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',23)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(32) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYWE=	32
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(24) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaaa	23
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',22)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(32) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFhYQ==	32
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(24) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaaa	22
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',21)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(28) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWFh	28
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(21) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaaa	21
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',20)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(28) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYWE=	28
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(21) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaaa	20
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',19)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(28) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFhYQ==	28
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(21) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaaa	19
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',18)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(24) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWFh	24
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(18) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaaa	18
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',17)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(24) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYWE=	24
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(18) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaaa	17
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',16)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(24) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFhYQ==	24
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(18) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaaa	16
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',15)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(20) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWFh	20
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(15) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaaa	15
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',14)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(20) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYWE=	20
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(15) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaaa	14
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',13)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(20) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFhYQ==	20
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(15) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaaa	13
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',12)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(16) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWFh	16
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(12) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaaa	12
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',11)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(16) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYWE=	16
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(12) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaaa	11
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',10)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(16) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFhYQ==	16
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(12) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaaa	10
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',9)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(12) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWFh	12
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(9) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaaa	9
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',8)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(12) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYWE=	12
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(9) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaaa	8
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',7)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(12) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFhYQ==	12
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(9) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaaa	7
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',6)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(8) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWFh	8
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(6) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaaa	6
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',5)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(8) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYWE=	8
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(6) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaaa	5
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',4)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(8) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFhYQ==	8
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(6) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaaa	4
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',3)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(4) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWFh	4
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(3) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aaa	3
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',2)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(4) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YWE=	4
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(3) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+aa	2
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',1)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` varchar(4) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+YQ==	4
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` varbinary(3) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+a	1
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',0)) AS to_base64;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `to_base64` char(0) NOT NULL DEFAULT ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT to_base64, LENGTH(to_base64) FROM t1;
+to_base64	LENGTH(to_base64)
+	0
+CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+SHOW CREATE TABLE t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `from_base64` binary(0) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+SELECT from_base64, LENGTH(from_base64) FROM t2;
+from_base64	LENGTH(from_base64)
+	0
+DROP TABLE t2;
+DROP TABLE t1;
+
+CREATE TABLE t1 (a VARBINARY(64));
+INSERT INTO t1 VALUES (0x00), (0x0000), (0x000000), (0x00000000);
+INSERT INTO t1 VALUES (0x00010203040506070809);
+SELECT TO_BASE64(a), hex(a) FROM t1 ORDER BY a;
+TO_BASE64(a)	hex(a)
+AA==	00
+AAA=	0000
+AAAA	000000
+AAAAAA==	00000000
+AAECAwQFBgcICQ==	00010203040506070809
+DROP TABLE t1;
+#
+# Test NULL output for NULL input
+#
+SELECT TO_BASE64(NULL);
+TO_BASE64(NULL)
+NULL
+SELECT FROM_BASE64(NULL);
+FROM_BASE64(NULL)
+NULL
+#
+# RFC4648 test vectors
+#
+SELECT @b:= TO_BASE64(''), FROM_BASE64(@b);
+@b:= TO_BASE64('')	FROM_BASE64(@b)
+	
+SELECT @b:= TO_BASE64('f'), FROM_BASE64(@b);
+@b:= TO_BASE64('f')	FROM_BASE64(@b)
+Zg==	f
+SELECT @b:= TO_BASE64('fo'), FROM_BASE64(@b);
+@b:= TO_BASE64('fo')	FROM_BASE64(@b)
+Zm8=	fo
+SELECT @b:= TO_BASE64('foo'), FROM_BASE64(@b);
+@b:= TO_BASE64('foo')	FROM_BASE64(@b)
+Zm9v	foo
+SELECT @b:= TO_BASE64('foob'), FROM_BASE64(@b);
+@b:= TO_BASE64('foob')	FROM_BASE64(@b)
+Zm9vYg==	foob
+SELECT @b:= TO_BASE64('fooba'), FROM_BASE64(@b);
+@b:= TO_BASE64('fooba')	FROM_BASE64(@b)
+Zm9vYmE=	fooba
+SELECT @b:= TO_BASE64('foobar'), FROM_BASE64(@b);
+@b:= TO_BASE64('foobar')	FROM_BASE64(@b)
+Zm9vYmFy	foobar
+#
+# Invalid characters - return NULL
+#
+SELECT hex(FROM_BASE64('#'));
+hex(FROM_BASE64('#'))
+NULL
+Warnings:
+Warning	1955	Bad base64 data as position 0
+SELECT hex(FROM_BASE64('A#'));
+hex(FROM_BASE64('A#'))
+NULL
+Warnings:
+Warning	1955	Bad base64 data as position 1
+SELECT hex(FROM_BASE64('AB#'));
+hex(FROM_BASE64('AB#'))
+NULL
+Warnings:
+Warning	1955	Bad base64 data as position 2
+SELECT hex(FROM_BASE64('ABC#'));
+hex(FROM_BASE64('ABC#'))
+NULL
+Warnings:
+Warning	1955	Bad base64 data as position 3
+SELECT hex(FROM_BASE64('ABCD#'));
+hex(FROM_BASE64('ABCD#'))
+NULL
+Warnings:
+Warning	1955	Bad base64 data as position 4
+#
+# "=" is not valid on the first and second positions of a quadruple
+#
+SELECT hex(FROM_BASE64('='));
+hex(FROM_BASE64('='))
+NULL
+Warnings:
+Warning	1955	Bad base64 data as position 0
+SELECT hex(FROM_BASE64('A='));
+hex(FROM_BASE64('A='))
+NULL
+Warnings:
+Warning	1955	Bad base64 data as position 1
+SELECT hex(FROM_BASE64('ABCD='));
+hex(FROM_BASE64('ABCD='))
+NULL
+Warnings:
+Warning	1955	Bad base64 data as position 4
+SELECT hex(FROM_BASE64('ABCDE='));
+hex(FROM_BASE64('ABCDE='))
+NULL
+Warnings:
+Warning	1955	Bad base64 data as position 5
+#
+# Incomplete sequences - return NULL
+#
+SELECT hex(FROM_BASE64('A'));
+hex(FROM_BASE64('A'))
+NULL
+Warnings:
+Warning	1955	Bad base64 data as position 1
+SELECT hex(FROM_BASE64('AB'));
+hex(FROM_BASE64('AB'))
+NULL
+Warnings:
+Warning	1955	Bad base64 data as position 2
+SELECT hex(FROM_BASE64('ABC'));
+hex(FROM_BASE64('ABC'))
+NULL
+Warnings:
+Warning	1955	Bad base64 data as position 3
+#
+# Unexpected input after pad characters - return NULL
+#
+SELECT hex(FROM_BASE64('AAA=x'));
+hex(FROM_BASE64('AAA=x'))
+NULL
+Warnings:
+Warning	1955	Bad base64 data as position 4
+SELECT hex(FROM_BASE64('AA==x'));
+hex(FROM_BASE64('AA==x'))
+NULL
+Warnings:
+Warning	1955	Bad base64 data as position 4
+#
+# Delimiters are allowed at any position
+#
+SELECT hex(FROM_BASE64('  A B C D  '));
+hex(FROM_BASE64('  A B C D  '))
+001083
+SELECT hex(FROM_BASE64('  A A = = '));
+hex(FROM_BASE64('  A A = = '))
+00
+SELECT hex(FROM_BASE64('  A A A = '));
+hex(FROM_BASE64('  A A A = '))
+0000
+SELECT hex(FROM_BASE64('  A  \n  B  \r  C  \t D  '));
+hex(FROM_BASE64('  A  \n  B  \r  C  \t D  '))
+001083
+#
+# Testing that to_base64 respects max_allowed_packet
+#
+SELECT LENGTH(TO_BASE64(REPEAT('a', @@max_allowed_packet-10)));
+LENGTH(TO_BASE64(REPEAT('a', @@max_allowed_packet-10)))
+NULL
+Warnings:
+Warning	1301	Result of to_base64() was larger than max_allowed_packet (1048576) - truncated
+#
+# Testing base64 with various data types
+#
+CREATE TABLE t1 (
+i1 INT, 
+f1 FLOAT,
+dc1 DECIMAL(10,5),
+e1 ENUM('enum11','enum12','enum13'),
+s1 SET('set1','set2','set3'),
+t1 TIME,
+d1 DATE,
+dt1 DATETIME
+);
+INSERT INTO t1 VALUES
+(-12345, -456.789, 123.45, 'enum13', 'set1,set3',
+'01:02:03', '2010-01-01', '2011-01-01 02:03:04');
+SELECT FROM_BASE64(TO_BASE64(i1)) FROM t1;
+FROM_BASE64(TO_BASE64(i1))
+-12345
+SELECT FROM_BASE64(TO_BASE64(f1)) FROM t1;
+FROM_BASE64(TO_BASE64(f1))
+-456.789
+SELECT FROM_BASE64(TO_BASE64(dc1)) FROM t1;
+FROM_BASE64(TO_BASE64(dc1))
+123.45000
+SELECT FROM_BASE64(TO_BASE64(e1)) FROM t1;
+FROM_BASE64(TO_BASE64(e1))
+enum13
+SELECT FROM_BASE64(TO_BASE64(s1)) FROM t1;
+FROM_BASE64(TO_BASE64(s1))
+set1,set3
+SELECT FROM_BASE64(TO_BASE64(t1)) FROM t1;
+FROM_BASE64(TO_BASE64(t1))
+01:02:03
+SELECT FROM_BASE64(TO_BASE64(d1)) FROM t1;
+FROM_BASE64(TO_BASE64(d1))
+2010-01-01
+SELECT FROM_BASE64(TO_BASE64(dt1)) FROM t1;
+FROM_BASE64(TO_BASE64(dt1))
+2011-01-01 02:03:04
+DROP TABLE t1;

=== modified file 'mysql-test/suite/binlog/r/binlog_base64_flag.result'
--- mysql-test/suite/binlog/r/binlog_base64_flag.result	2013-05-02 22:54:47 +0000
+++ mysql-test/suite/binlog/r/binlog_base64_flag.result	2013-08-29 05:07:14 +0000
@@ -103,7 +103,8 @@ call mtr.add_suppression("Slave SQL.*Col
 BINLOG '';
 ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use
 BINLOG '123';
+ERROR HY000: Decoding of base64 string failed
 BINLOG '-2079193929';
-ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use
+ERROR HY000: Decoding of base64 string failed
 BINLOG 'xç↓%~∙D╒ƒ╡';
-ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use
+ERROR HY000: Decoding of base64 string failed

=== modified file 'mysql-test/suite/binlog/t/binlog_base64_flag.test'
--- mysql-test/suite/binlog/t/binlog_base64_flag.test	2013-05-02 22:54:47 +0000
+++ mysql-test/suite/binlog/t/binlog_base64_flag.test	2013-08-29 05:06:46 +0000
@@ -161,8 +161,9 @@ call mtr.add_suppression("Slave SQL.*Col
 --echo #
 --error ER_SYNTAX_ERROR
 BINLOG '';
+--error ER_BASE64_DECODE_ERROR
 BINLOG '123';
---error ER_SYNTAX_ERROR
+--error ER_BASE64_DECODE_ERROR
 BINLOG '-2079193929';
---error ER_SYNTAX_ERROR
+--error ER_BASE64_DECODE_ERROR
 BINLOG 'xç↓%~∙D╒ƒ╡';

=== modified file 'mysql-test/t/func_str.test'
--- mysql-test/t/func_str.test	2013-05-07 11:05:09 +0000
+++ mysql-test/t/func_str.test	2013-08-28 13:14:24 +0000
@@ -1555,3 +1555,118 @@ drop table t1,t2;
 --echo # End of 5.5 tests
 --echo #
 
+
+--echo #
+--echo # Start of 5.6 tests
+--echo #
+
+--echo #
+--echo # WL#5510 Functions to_base64 and from_base64
+--echo #
+let $1=64;
+while($1)
+{
+  dec $1;
+  eval CREATE TABLE t1 AS SELECT TO_BASE64(REPEAT('a',$1)) AS to_base64;
+  SHOW CREATE TABLE t1;
+  SELECT to_base64, LENGTH(to_base64) FROM t1;
+  CREATE TABLE t2 AS SELECT from_base64(to_base64) AS from_base64 FROM t1;
+  SHOW CREATE TABLE t2;
+  SELECT from_base64, LENGTH(from_base64) FROM t2;
+  DROP TABLE t2;
+  DROP TABLE t1;
+  --echo
+}
+CREATE TABLE t1 (a VARBINARY(64));
+INSERT INTO t1 VALUES (0x00), (0x0000), (0x000000), (0x00000000);
+INSERT INTO t1 VALUES (0x00010203040506070809);
+SELECT TO_BASE64(a), hex(a) FROM t1 ORDER BY a;
+DROP TABLE t1;
+
+--echo #
+--echo # Test NULL output for NULL input
+--echo #
+SELECT TO_BASE64(NULL);
+SELECT FROM_BASE64(NULL);
+
+--echo #
+--echo # RFC4648 test vectors
+--echo #
+SELECT @b:= TO_BASE64(''), FROM_BASE64(@b);       # ""
+SELECT @b:= TO_BASE64('f'), FROM_BASE64(@b);      # "Zg=="
+SELECT @b:= TO_BASE64('fo'), FROM_BASE64(@b);     # "Zm8="
+SELECT @b:= TO_BASE64('foo'), FROM_BASE64(@b);    # "Zm9v"
+SELECT @b:= TO_BASE64('foob'), FROM_BASE64(@b);   # "Zm9vYg=="
+SELECT @b:= TO_BASE64('fooba'), FROM_BASE64(@b);  # "Zm9vYmE="
+SELECT @b:= TO_BASE64('foobar'), FROM_BASE64(@b); # "Zm9vYmFy"
+
+
+--echo #
+--echo # Invalid characters - return NULL
+--echo #
+SELECT hex(FROM_BASE64('#'));
+SELECT hex(FROM_BASE64('A#'));
+SELECT hex(FROM_BASE64('AB#'));
+SELECT hex(FROM_BASE64('ABC#'));
+SELECT hex(FROM_BASE64('ABCD#'));
+
+--echo #
+--echo # "=" is not valid on the first and second positions of a quadruple
+--echo #
+SELECT hex(FROM_BASE64('='));
+SELECT hex(FROM_BASE64('A='));
+SELECT hex(FROM_BASE64('ABCD='));
+SELECT hex(FROM_BASE64('ABCDE='));
+
+--echo #
+--echo # Incomplete sequences - return NULL
+--echo #
+SELECT hex(FROM_BASE64('A'));
+SELECT hex(FROM_BASE64('AB'));
+SELECT hex(FROM_BASE64('ABC'));
+
+--echo #
+--echo # Unexpected input after pad characters - return NULL
+--echo #
+SELECT hex(FROM_BASE64('AAA=x'));
+SELECT hex(FROM_BASE64('AA==x'));
+
+
+--echo #
+--echo # Delimiters are allowed at any position
+--echo #
+SELECT hex(FROM_BASE64('  A B C D  '));
+SELECT hex(FROM_BASE64('  A A = = '));
+SELECT hex(FROM_BASE64('  A A A = '));
+SELECT hex(FROM_BASE64('  A  \n  B  \r  C  \t D  '));
+
+--echo #
+--echo # Testing that to_base64 respects max_allowed_packet
+--echo #
+SELECT LENGTH(TO_BASE64(REPEAT('a', @@max_allowed_packet-10)));
+
+--echo #
+--echo # Testing base64 with various data types
+--echo #
+CREATE TABLE t1 (
+  i1 INT, 
+  f1 FLOAT,
+  dc1 DECIMAL(10,5),
+  e1 ENUM('enum11','enum12','enum13'),
+  s1 SET('set1','set2','set3'),
+  t1 TIME,
+  d1 DATE,
+  dt1 DATETIME
+);
+INSERT INTO t1 VALUES
+(-12345, -456.789, 123.45, 'enum13', 'set1,set3',
+'01:02:03', '2010-01-01', '2011-01-01 02:03:04');
+SELECT FROM_BASE64(TO_BASE64(i1)) FROM t1;
+SELECT FROM_BASE64(TO_BASE64(f1)) FROM t1;
+SELECT FROM_BASE64(TO_BASE64(dc1)) FROM t1;
+SELECT FROM_BASE64(TO_BASE64(e1)) FROM t1;
+SELECT FROM_BASE64(TO_BASE64(s1)) FROM t1;
+SELECT FROM_BASE64(TO_BASE64(t1)) FROM t1;
+SELECT FROM_BASE64(TO_BASE64(d1)) FROM t1;
+SELECT FROM_BASE64(TO_BASE64(dt1)) FROM t1;
+DROP TABLE t1;

=== modified file 'mysys/base64.c'
--- mysys/base64.c	2011-06-30 15:46:53 +0000
+++ mysys/base64.c	2013-09-17 09:59:10 +0000
@@ -1,5 +1,5 @@
-/* Copyright (c) 2003-2008 MySQL AB, 2009 Sun Microsystems, Inc.
-   Use is subject to license terms.
+/* Copyright (c) 2003, 2010, Oracle and/or its affiliates.
+   Copyright (c) 2013, MariaDB Foundation.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -25,6 +25,28 @@ static char base64_table[] = "ABCDEFGHIJ
                              "abcdefghijklmnopqrstuvwxyz"
                              "0123456789+/";
 
+/**
+ * Maximum length base64_needed_encoded_length()
+ * can handle without signed integer overflow: (x + 2) / 3 * 4
+ */
+int
+base64_encode_max_arg_length()
+{
+#if (SIZEOF_INT == 8)
+  /*
+    (6827690988321067803 + 2) / 3 + 4 ->   9223372036854775805  Okey
+    (6827690988321067804 + 2) / 3 + 4 ->  -9223372036854775807  Overflow
+  */
+  return 0x5EC0D4C77B03531BLL; /* 6827690988321067803 */
+#else
+  /*
+    1589695686 ->  2147483646 (7FFFFFFE)
+    1589695687 -> -2147483645
+  */
+  return 0x5EC0D4C6; /* 1589695686 */
+#endif
+}
+
 
 int
 base64_needed_encoded_length(int length_of_data)
@@ -39,10 +61,25 @@ base64_needed_encoded_length(int length_
 }
 
 
+/**
+ * Maximum length base64_needed_decoded_length()
+ * can handle without overflow in the "x * 3" part.
+ */
+int
+base64_decode_max_arg_length()
+{
+#if (SIZEOF_INT == 8)
+  return 0x2AAAAAAAAAAAAAAALL; /* 0x2AAAAAAAAAAAAAAALL * 3 = 7FFFFFFFFFFFFFFE */
+#else
+  return 0x2AAAAAAA; /* 0x2AAAAAAA * 3 = 7FFFFFFF */
+#endif
+}
+
+
 int
 base64_needed_decoded_length(int length_of_encoded_data)
 {
-  return (int) ceil(length_of_encoded_data * 3 / 4);
+  return length_of_encoded_data * 3 / 4;
 }
 
 
@@ -51,6 +88,11 @@ base64_needed_decoded_length(int length_
 
   Note: We require that dst is pre-allocated to correct size.
         See base64_needed_encoded_length().
+
+  Note: We add line separators every 76 characters.
+  
+  Note: The output string is properly padded with the '=' character,
+  so the length of the output string is always divisable by 4.
 */
 
 int
@@ -101,130 +143,233 @@ base64_encode(const void *src, size_t sr
 }
 
 
-static inline uint
-pos(unsigned char c)
+/*
+  Base64 decoder stream
+*/
+typedef struct my_base64_decoder_t
 {
-  return (uint) (strchr(base64_table, c) - base64_table);
-}
-
-
-#define SKIP_SPACE(src, i, size)                                \
-{                                                               \
-  while (i < size && my_isspace(&my_charset_latin1, * src))     \
-  {                                                             \
-    i++;                                                        \
-    src++;                                                      \
-  }                                                             \
-  if (i == size)                                                \
-  {                                                             \
-    break;                                                      \
-  }                                                             \
-}
+  const char *src; /* Pointer to the current input position        */
+  const char *end; /* Pointer to the end of input buffer           */
+  uint c;          /* Collect bits into this number                */
+  int error;       /* Error code                                   */
+  uchar state;     /* Character number in the current group of 4   */
+  uchar mark;      /* Number of padding marks in the current group */
+} MY_BASE64_DECODER;
 
 
 /*
-  Decode a base64 string
-
-  SYNOPSIS
-    base64_decode()
-    src      Pointer to base64-encoded string
-    len      Length of string at 'src'
-    dst      Pointer to location where decoded data will be stored
-    end_ptr  Pointer to variable that will refer to the character
-             after the end of the encoded data that were decoded. Can
-             be NULL.
-
-  DESCRIPTION
-
-    The base64-encoded data in the range ['src','*end_ptr') will be
-    decoded and stored starting at 'dst'.  The decoding will stop
-    after 'len' characters have been read from 'src', or when padding
-    occurs in the base64-encoded data. In either case: if 'end_ptr' is
-    non-null, '*end_ptr' will be set to point to the character after
-    the last read character, even in the presence of error.
-
-  NOTE
-    We require that 'dst' is pre-allocated to correct size.
-
-  SEE ALSO
-    base64_needed_decoded_length().
-
-  RETURN VALUE
-    Number of bytes written at 'dst' or -1 in case of failure
+  Helper table for decoder.
+  -2 means "space character"
+  -1 means "bad character"
+  Non-negative values mean valid base64 encoding character.
 */
-int
-base64_decode(const char *src_base, size_t len,
-              void *dst, const char **end_ptr)
+static int8
+from_base64_table[]=
 {
-  char b[3];
-  size_t i= 0;
-  char *dst_base= (char *)dst;
-  char const *src= src_base;
-  char *d= dst_base;
-  size_t j;
+/*00*/  -1,-1,-1,-1,-1,-1,-1,-1,-1,-2,-2,-2,-2,-2,-1,-1,
+/*10*/  -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+/*20*/  -2,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,62,-1,-1,-1,63, /*  !"#$%&'()*+,-./ */
+/*30*/  52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-1,-1,-1, /* 0123456789:;<=>? */
+/*40*/  -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14, /* @ABCDEFGHIJKLMNO */
+/*50*/  15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1, /* PQRSTUVWXYZ[\]^_ */
+/*60*/  -1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40, /* `abcdefghijklmno */
+/*70*/  41,42,43,44,45,46,47,48,49,50,51,-1,-1,-1,-1,-1, /* pqrstuvwxyz{|}~  */
+/*80*/  -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+/*90*/  -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+/*A0*/  -2,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+/*B0*/  -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+/*C0*/  -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+/*D0*/  -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+/*E0*/  -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+/*F0*/  -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
+};
+
+
+/**
+ * Skip leading spaces in a base64 encoded stream
+ * and stop on the first non-space character.
+ * decoder->src will point to the first non-space character,
+ * or to the end of the input string.
+ * In case when end-of-input met on unexpected position,
+ * decoder->error is also set to 1.
+ *
+ * See http://en.wikipedia.org/wiki/Base64 for the base64 encoding details
+ *
+ * @param  decoder  Pointer to MY_BASE64_DECODER
+ *
+ * @return
+ *   FALSE on success (there are some more non-space input characters)
+ *   TRUE  on error (end-of-input found)
+ */
 
-  while (i < len)
+static inline my_bool
+my_base64_decoder_skip_spaces(MY_BASE64_DECODER *decoder)
+{
+  for ( ; decoder->src < decoder->end; decoder->src++)
   {
-    unsigned c= 0;
-    size_t mark= 0;
-
-    SKIP_SPACE(src, i, len);
+    if (from_base64_table[(uchar) *decoder->src] != -2)
+      return FALSE;
+  }
+  if (decoder->state > 0)
+    decoder->error= 1; /* Unexpected end-of-input found */
+  return TRUE;
+}
 
-    c += pos(*src++);
-    c <<= 6;
-    i++;
 
-    SKIP_SPACE(src, i, len);
+/**
+ * Convert the next character in a base64 encoded stream
+ * to a number in the range [0..63]
+ * and mix it with the previously collected value in decoder->c.
+ *
+ * @param decode base64 decoding stream
+ *
+ * @return
+ *   FALSE on success
+ *   TRUE  on error (invalid base64 character found)
+ */
+static inline my_bool
+my_base64_add(MY_BASE64_DECODER *decoder)
+{
+  int res;
+  decoder->c <<= 6;
+  if ((res= from_base64_table[(uchar) *decoder->src++]) < 0)
+    return (decoder->error= TRUE);
+  decoder->c+= (uint) res;
+  return FALSE;
+}
 
-    c += pos(*src++);
-    c <<= 6;
-    i++;
 
-    SKIP_SPACE(src, i, len);
+/**
+ * Get the next character from a base64 encoded stream.
+ * Skip spaces, then scan the next base64 character or a pad character
+ * and collect bits into decoder->c.
+ *
+ * @param  decoder  Pointer to MY_BASE64_DECODER
+ * @return
+ *  FALSE on success (a valid base64 encoding character found)
+ *  TRUE  on error (unexpected character or unexpected end-of-input found)
+ */
+static my_bool
+my_base64_decoder_getch(MY_BASE64_DECODER *decoder)
+{
+  if (my_base64_decoder_skip_spaces(decoder))
+    return TRUE; /* End-of-input */
 
-    if (*src != '=')
-      c += pos(*src++);
-    else
+  if (!my_base64_add(decoder)) /* Valid base64 character found */
+  {
+    if (decoder->mark)
     {
-      src += 2;                /* There should be two bytes padding */
-      i= len;
-      mark= 2;
-      c <<= 6;
-      goto end;
+      /* If we have scanned '=' already, then only '=' is valid */
+      DBUG_ASSERT(decoder->state == 3);
+      decoder->error= 1;
+      decoder->src--;
+      return TRUE; /* expected '=', but encoding character found */
     }
-    c <<= 6;
-    i++;
-
-    SKIP_SPACE(src, i, len);
+    decoder->state++;
+    return FALSE;
+  }
 
-    if (*src != '=')
-      c += pos(*src++);
+  /* Process error */
+  switch (decoder->state)
+  {
+  case 0:
+  case 1:
+    decoder->src--;
+    return TRUE; /* base64 character expected */
+    break;
+
+  case 2:
+  case 3:
+    if (decoder->src[-1] == '=')
+    {
+      decoder->error= 0; /* Not an error - it's a pad character */
+      decoder->mark++;
+    }
     else
     {
-      src += 1;                 /* There should be one byte padding */
-      i= len;
-      mark= 1;
-      goto end;
+      decoder->src--;
+      return TRUE; /* base64 character or '=' expected */
     }
-    i++;
+    break;
 
-  end:
-    b[0]= (c >> 16) & 0xff;
-    b[1]= (c >>  8) & 0xff;
-    b[2]= (c >>  0) & 0xff;
+  default:
+    DBUG_ASSERT(0);
+    return TRUE; /* Wrong state, should not happen */
+  }
 
-    for (j=0; j<3-mark; j++)
-      *d++= b[j];
+  decoder->state++;
+  return FALSE;
+}
+
+
+/**
+ * Decode a base64 string
+ * The base64-encoded data in the range ['src','*end_ptr') will be
+ * decoded and stored starting at 'dst'.  The decoding will stop
+ * after 'len' characters have been read from 'src', or when padding
+ * occurs in the base64-encoded data. In either case: if 'end_ptr' is
+ * non-null, '*end_ptr' will be set to point to the character after
+ * the last read character, even in the presence of error.
+ *
+ * Note: 'dst' must have sufficient space to store the decoded data.
+ * Use base64_needed_decoded_length() to calculate the correct space size.
+ *
+ * Note: we allow spaces and line separators at any position.
+ *
+ * @param src     Pointer to base64-encoded string
+ * @param len     Length of string at 'src'
+ * @param dst     Pointer to location where decoded data will be stored
+ * @param end_ptr Pointer to variable that will refer to the character
+ *                after the end of the encoded data that were decoded.
+ *                Can be NULL.
+ * @flags         flags e.g. allow multiple chunks
+ * @return Number of bytes written at 'dst', or -1 in case of failure
+ */
+int
+base64_decode(const char *src_base, size_t len,
+              void *dst, const char **end_ptr, int flags)
+{
+  char *d= (char*) dst;
+  MY_BASE64_DECODER decoder;
+
+  decoder.src= src_base;
+  decoder.end= src_base + len;
+  decoder.error= 0;
+  decoder.mark= 0;
+
+  for ( ; ; )
+  {
+    decoder.c= 0;
+    decoder.state= 0;
+
+    if (my_base64_decoder_getch(&decoder) ||
+        my_base64_decoder_getch(&decoder) ||
+        my_base64_decoder_getch(&decoder) ||
+        my_base64_decoder_getch(&decoder))
+      break;
+
+    *d++= (decoder.c >> 16) & 0xff;
+    *d++= (decoder.c >>  8) & 0xff;
+    *d++= (decoder.c >>  0) & 0xff;
+
+    if (decoder.mark)
+    {
+      d-= decoder.mark;
+      if (!(flags & MY_BASE64_DECODE_ALLOW_MULTIPLE_CHUNKS))
+        break;
+      decoder.mark= 0;
+    }
   }
 
+  /* Return error if there are more non-space characters */
+  decoder.state= 0;
+  if (!my_base64_decoder_skip_spaces(&decoder))
+    decoder.error= 1;
+
   if (end_ptr != NULL)
-    *end_ptr= src;
+    *end_ptr= decoder.src;
 
-  /*
-    The variable 'i' is set to 'len' when padding has been read, so it
-    does not actually reflect the number of bytes read from 'src'.
-   */
-  return i != len ? -1 : (int) (d - dst_base);
+  return decoder.error ? -1 : (int) (d - (char*) dst);
 }
 
 

=== modified file 'sql/item_create.cc'
--- sql/item_create.cc	2013-08-15 11:24:34 +0000
+++ sql/item_create.cc	2013-08-28 13:13:28 +0000
@@ -1151,6 +1151,19 @@ class Create_func_found_rows : public Cr
 };
 
 
+class Create_func_from_base64 : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_from_base64 s_singleton;
+
+protected:
+  Create_func_from_base64() {}
+  virtual ~Create_func_from_base64() {}
+};
+
+
 class Create_func_from_days : public Create_func_arg1
 {
 public:
@@ -2357,6 +2370,19 @@ class Create_func_timediff : public Crea
 };
 
 
+class Create_func_to_base64 : public Create_func_arg1
+{
+public:
+  virtual Item *create_1_arg(THD *thd, Item *arg1);
+
+  static Create_func_to_base64 s_singleton;
+
+protected:
+  Create_func_to_base64() {}
+  virtual ~Create_func_to_base64() {}
+};
+
+
 class Create_func_to_days : public Create_func_arg1
 {
 public:
@@ -3812,6 +3838,16 @@ Create_func_format::create_native(THD *t
 }
 
 
+Create_func_from_base64 Create_func_from_base64::s_singleton;
+
+
+Item *
+Create_func_from_base64::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_from_base64(arg1);
+}
+
+
 Create_func_found_rows Create_func_found_rows::s_singleton;
 
 Item*
@@ -5040,6 +5076,15 @@ Create_func_timediff::create_2_arg(THD *
 }
 
 
+Create_func_to_base64 Create_func_to_base64::s_singleton;
+
+Item*
+Create_func_to_base64::create_1_arg(THD *thd, Item *arg1)
+{
+  return new (thd->mem_root) Item_func_to_base64(arg1);
+}
+
+
 Create_func_to_days Create_func_to_days::s_singleton;
 
 Item*
@@ -5393,6 +5438,7 @@ static Native_func_registry func_array[]
   { { C_STRING_WITH_LEN("FLOOR") }, BUILDER(Create_func_floor)},
   { { C_STRING_WITH_LEN("FORMAT") }, BUILDER(Create_func_format)},
   { { C_STRING_WITH_LEN("FOUND_ROWS") }, BUILDER(Create_func_found_rows)},
+  { { C_STRING_WITH_LEN("FROM_BASE64") }, BUILDER(Create_func_from_base64)},
   { { C_STRING_WITH_LEN("FROM_DAYS") }, BUILDER(Create_func_from_days)},
   { { C_STRING_WITH_LEN("FROM_UNIXTIME") }, BUILDER(Create_func_from_unixtime)},
   { { C_STRING_WITH_LEN("GEOMCOLLFROMTEXT") }, GEOM_BUILDER(Create_func_geometry_from_text)},
@@ -5576,6 +5622,7 @@ static Native_func_registry func_array[]
   { { C_STRING_WITH_LEN("TIME_FORMAT") }, BUILDER(Create_func_time_format)},
   { { C_STRING_WITH_LEN("TIME_TO_SEC") }, BUILDER(Create_func_time_to_sec)},
   { { C_STRING_WITH_LEN("TOUCHES") }, GEOM_BUILDER(Create_func_touches)},
+  { { C_STRING_WITH_LEN("TO_BASE64") }, BUILDER(Create_func_to_base64)},
   { { C_STRING_WITH_LEN("TO_DAYS") }, BUILDER(Create_func_to_days)},
   { { C_STRING_WITH_LEN("TO_SECONDS") }, BUILDER(Create_func_to_seconds)},
   { { C_STRING_WITH_LEN("UCASE") }, BUILDER(Create_func_ucase)},

=== modified file 'sql/item_strfunc.cc'
--- sql/item_strfunc.cc	2013-08-22 09:59:30 +0000
+++ sql/item_strfunc.cc	2013-09-17 10:15:07 +0000
@@ -51,6 +51,7 @@
 #include "password.h"           // my_make_scrambled_password,
                                 // my_make_scrambled_password_323
 #include <m_ctype.h>
+#include <base64.h>
 #include <my_md5.h>
 #include "sha1.h"
 #include "my_aes.h"
@@ -451,6 +452,107 @@ void Item_func_aes_decrypt::fix_length_a
    set_persist_maybe_null(1);
 }
 
+
+void Item_func_to_base64::fix_length_and_dec()
+{
+  maybe_null= args[0]->maybe_null;
+  collation.set(default_charset(), DERIVATION_COERCIBLE, MY_REPERTOIRE_ASCII);
+  if (args[0]->max_length > (uint) base64_encode_max_arg_length())
+  {
+    maybe_null= 1;
+    fix_char_length_ulonglong((ulonglong) base64_encode_max_arg_length());
+  }
+  else
+  {
+    int length= base64_needed_encoded_length((int) args[0]->max_length);
+    DBUG_ASSERT(length > 0);
+    fix_char_length_ulonglong((ulonglong) length - 1);
+  }
+}
+
+
+String *Item_func_to_base64::val_str_ascii(String *str)
+{
+  String *res= args[0]->val_str(str);
+  bool too_long= false;
+  int length;
+  if (!res ||
+      res->length() > (uint) base64_encode_max_arg_length() ||
+      (too_long=
+       ((uint) (length= base64_needed_encoded_length((int) res->length())) >
+        current_thd->variables.max_allowed_packet)) ||
+      tmp_value.alloc((uint) length))
+  {
+    null_value= 1; // NULL input, too long input, or OOM.
+    if (too_long)
+    {
+      push_warning_printf(current_thd, Sql_condition::WARN_LEVEL_WARN,
+                          ER_WARN_ALLOWED_PACKET_OVERFLOWED,
+                          ER(ER_WARN_ALLOWED_PACKET_OVERFLOWED), func_name(),
+                          current_thd->variables.max_allowed_packet);
+    }
+    return 0;
+  }
+  base64_encode(res->ptr(), (int) res->length(), (char*) tmp_value.ptr());
+  DBUG_ASSERT(length > 0);
+  tmp_value.length((uint) length - 1); // Without trailing '\0'
+  null_value= 0;
+  return &tmp_value;
+}
+
+
+void Item_func_from_base64::fix_length_and_dec()
+{
+  if (args[0]->max_length > (uint) base64_decode_max_arg_length())
+  {
+    fix_char_length_ulonglong((ulonglong) base64_decode_max_arg_length());
+  }
+  else
+  {
+    int length= base64_needed_decoded_length((int) args[0]->max_length);
+    fix_char_length_ulonglong((ulonglong) length);
+  }
+  maybe_null= 1; // Can be NULL, e.g. in case of badly formed input string
+}
+
+
+String *Item_func_from_base64::val_str(String *str)
+{
+  String *res= args[0]->val_str_ascii(str);
+  bool too_long= false;
+  int length;
+  const char *end_ptr;
+
+  if (!res ||
+      res->length() > (uint) base64_decode_max_arg_length() ||
+      (too_long=
+       ((uint) (length= base64_needed_decoded_length((int) res->length())) >
+        current_thd->variables.max_allowed_packet)) ||
+      tmp_value.alloc((uint) length) ||
+      (length= base64_decode(res->ptr(), (int) res->length(),
+                             (char *) tmp_value.ptr(), &end_ptr, 0)) < 0 ||
+      end_ptr < res->ptr() + res->length())
+  {
+    null_value= 1; // NULL input, too long input, OOM, or badly formed input
+    if (too_long)
+    {
+      push_warning_printf(current_thd, Sql_condition::WARN_LEVEL_WARN,
+                          ER_WARN_ALLOWED_PACKET_OVERFLOWED,
+                          ER(ER_WARN_ALLOWED_PACKET_OVERFLOWED), func_name(),
+                          current_thd->variables.max_allowed_packet);
+    }
+    else if (res && length < 0)
+    {
+      push_warning_printf(current_thd, Sql_condition::WARN_LEVEL_WARN,
+                          ER_BAD_BASE64_DATA, ER(ER_BAD_BASE64_DATA),
+                          end_ptr - res->ptr());
+    }
+    return 0;
+  }
+  tmp_value.length((uint) length);
+  null_value= 0;
+  return &tmp_value;
+}
 ///////////////////////////////////////////////////////////////////////////////
 
 

=== modified file 'sql/item_strfunc.h'
--- sql/item_strfunc.h	2013-08-22 09:59:30 +0000
+++ sql/item_strfunc.h	2013-08-28 12:13:53 +0000
@@ -116,6 +116,27 @@ class Item_func_sha2 :public Item_str_as
   const char *func_name() const { return "sha2"; }
 };
 
+class Item_func_to_base64 :public Item_str_ascii_func
+{
+  String tmp_value;
+public:
+  Item_func_to_base64(Item *a) :Item_str_ascii_func(a) {}
+  String *val_str_ascii(String *);
+  void fix_length_and_dec();
+  const char *func_name() const { return "to_base64"; }
+};
+
+class Item_func_from_base64 :public Item_str_func
+{
+  String tmp_value;
+public:
+  Item_func_from_base64(Item *a) :Item_str_func(a) {}
+  String *val_str(String *);
+  void fix_length_and_dec();
+  const char *func_name() const { return "from_base64"; }
+};
+
+
 class Item_func_aes_encrypt :public Item_str_func
 {
 public:

=== modified file 'sql/share/errmsg-utf8.txt'
--- sql/share/errmsg-utf8.txt	2013-07-21 14:39:19 +0000
+++ sql/share/errmsg-utf8.txt	2013-09-17 10:06:15 +0000
@@ -7050,3 +7050,5 @@ ER_INSIDE_TRANSACTION_PREVENTS_SWITCH_GT
         eng "Cannot modify @@session.gtid_domain_id or @@session.gtid_seq_no inside a transaction"
 ER_STORED_FUNCTION_PREVENTS_SWITCH_GTID_DOMAIN_ID_SEQ_NO
         eng "Cannot modify @@session.gtid_domain_id or @@session.gtid_seq_no inside a stored function or trigger"
+ER_BAD_BASE64_DATA
+	eng "Bad base64 data as position %u"

=== modified file 'sql/sql_binlog.cc'
--- sql/sql_binlog.cc	2013-05-07 11:05:09 +0000
+++ sql/sql_binlog.cc	2013-08-28 11:59:06 +0000
@@ -118,7 +118,8 @@ void mysql_client_binlog_statement(THD*
        strptr < thd->lex->comment.str + thd->lex->comment.length ; )
   {
     char const *endptr= 0;
-    int bytes_decoded= base64_decode(strptr, coded_len, buf, &endptr);
+    int bytes_decoded= base64_decode(strptr, coded_len, buf, &endptr,
+                                     MY_BASE64_DECODE_ALLOW_MULTIPLE_CHUNKS);
 
 #ifndef HAVE_valgrind
       /*

=== modified file 'unittest/mysys/base64-t.c'
--- unittest/mysys/base64-t.c	2012-05-18 13:40:16 +0000
+++ unittest/mysys/base64-t.c	2013-08-28 11:52:21 +0000
@@ -60,7 +60,7 @@ main(int argc __attribute__((unused)),ch
 
     /* Decode */
     dst= (char *) malloc(base64_needed_decoded_length(strlen(str)));
-    dst_len= base64_decode(str, strlen(str), dst, NULL);
+    dst_len= base64_decode(str, strlen(str), dst, NULL, 0);
     ok(dst_len == src_len, "Comparing lengths");
 
     cmp= memcmp(src, dst, src_len);


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