Commit 7dd2ec0f authored by unknown's avatar unknown
Browse files

BUG#15935: post-review fixes: added comment

parent 6025cd46

sql/sql_update.cc

+10 −0
Original line number Diff line number Diff line
@@ -243,6 +243,16 @@ int mysql_update(THD *thd, 
			   DISK_BUFFER_SIZE, MYF(MY_WME)))

	goto err;



      /*

        When we get here, we have one of the following options:

        A. used_index == MAX_KEY

           This means we should use full table scan, and start it with

           init_read_record call

        B. used_index != MAX_KEY

           B.1 quick select is used, start the scan with init_read_record

           B.2 quick select is not used, this is full index scan (with LIMIT)

               Full index scan must be started with init_read_record_idx

      */

      if (used_index == MAX_KEY || (select && select->quick))

        init_read_record(&info,thd,table,select,0,1);

      else