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------------------------------------------------------------
revno: 2724
committer: Sergey Petrunya <psergey@xxxxxxxxxxxx>
branch nick: maria-5.1
timestamp: Wed 2009-09-02 12:40:18 +0400
message:
  More comments 
modified:
  sql/opt_range.h


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=== modified file 'sql/opt_range.h'
--- sql/opt_range.h	2009-05-06 12:03:24 +0000
+++ sql/opt_range.h	2009-09-02 08:40:18 +0000
@@ -38,6 +38,12 @@
 } KEY_PART;
 
 
+/*
+  A "MIN_TUPLE < tbl.key_tuple < MAX_TUPLE" interval. 
+  
+  One of endpoints may be absent. 'flags' member has flags which tell whether
+  the endpoints are '<' or '<='.
+*/
 class QUICK_RANGE :public Sql_alloc {
  public:
   uchar *min_key,*max_key;