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[Sergey Petrunia <psergey@xxxxxxxxxxxx>]

#At lp:maria based on revid:psergey@xxxxxxxxxxxx-20090518201557-e56621ppwmy13pi7

 2701 Sergey Petrunia	2009-05-19
      Added comments
      modified:
        sql/opt_range.h

=== modified file 'sql/opt_range.h'
--- a/sql/opt_range.h	2009-05-06 12:03:24 +0000
+++ b/sql/opt_range.h	2009-05-19 00:25:57 +0000
@@ -670,6 +670,11 @@ public:
 };
 
 
+/* 
+  Same as QUICK_RANGE_SELECT but scans the ranges backwards, thus producing
+  records in reverse order.
+*/
+
 class QUICK_SELECT_DESC: public QUICK_RANGE_SELECT
 {
 public: