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WL#5370 Keep forward-compatibility when changing

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'CREATE TABLE IF NOT EXISTS ... SELECT' behaviour
BUG#47132, BUG#47442, BUG49494, BUG#23992 and BUG#48814 will disappear
automatically after the this patch.
BUG#55617 is fixed by this patch too.
            
This is the 5.5 part.
It implements:
- 'CREATE TABLE IF NOT EXISTS ... SELECT' statement will not insert
  anything and binlog anything if the table already exists.
  It only generate a warning that table already exists.
- A couple of test cases for the behavior changing.
This commit is contained in:
2010-08-18 17:35:41 +08:00
parent 8977575cff
commit d3b7cd3ff2
31 changed files with 806 additions and 302 deletions
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sql/handler.h
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@ -1001,7 +1001,6 @@ typedef struct st_ha_create_information
uint merge_insert_method;
uint extra_size; /* length of extra data segment */
enum enum_ha_unused unused1;
bool table_existed; /* 1 in create if table existed */
bool frm_only; /* 1 if no ha_create_table() */
bool varchar; /* 1 if table has a VARCHAR */
enum ha_storage_media storage_media; /* DEFAULT, DISK or MEMORY */