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unknown authored
added "nulls_ignored" index statistics collection method for MyISAM tables. (notification trigger: this is about BUG#9622). include/my_base.h: BUG#9622: Added MI_STATS_METHOD_IGNORE_NULLS statistics collection method: Added SEARCH_RETURN_B_POS flag for ha_key_cmp() include/my_handler.h: BUG#9622: Added MI_STATS_METHOD_IGNORE_NULLS statistics collection method: added ha_find_null() include/myisam.h: BUG#9622: Added MI_STATS_METHOD_IGNORE_NULLS statistics collection method. myisam/mi_check.c: BUG#9622: Added MI_STATS_METHOD_IGNORE_NULLS statistics collection method, added mi_collect_stats_*(), updated update_key_parts() to deal with all 3 methods. myisam/myisamchk.c: BUG#9622: Added nulls_ignored index statistics collection method for MyISAM myisam/myisamdef.h: BUG#9622: Added MI_STATS_METHOD_IGNORE_NULLS statistics collection method. myisam/sort.c: BUG#9622: Added MI_STATS_METHOD_IGNORE_NULLS statistics collection method. mysql-test/r/myisam.result: Testcase for BUG9622 mysql-test/t/myisam.test: Testcase for BUG9622 mysys/my_handler.c: BUG#9622: ha_key_cmp() now supports new SEARCH_RETURN_B_POS flag, added ha_find_null() sql/ha_myisam.cc: BUG#9622: Added MI_STATS_METHOD_IGNORE_NULLS statistics collection method. sql/mysqld.cc: BUG#9622: Added MI_STATS_METHOD_IGNORE_NULLS statistics collection method.
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