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BUG#12232: Add a server option to treat NULL values as equal when calculating MyISAM index

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statistics (like 4.0 did) (patch #3, with review #1 & #2 feedback addressed)
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sergefp@mysql.com
2005-09-21 02:18:29 +04:00
parent 8a5c24536c
commit f9475d1d15
10 changed files with 215 additions and 14 deletions
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sql/handler.h
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@@ -522,6 +522,7 @@ public:
extern struct show_table_type_st sys_table_types[];
extern const char *ha_row_type[];
extern TYPELIB tx_isolation_typelib;
extern TYPELIB myisam_stats_method_typelib;
/* Wrapper functions */
#define ha_commit_stmt(thd) (ha_commit_trans((thd), &((thd)->transaction.stmt)))