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This is first cset for WL#1394 "Optimize index merge when all involved index ranges include only values with equal keys"

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The main idea is to exploit the fact that key scans for "key=const" return ordered sequences of rowids.
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sergefp@mysql.com
2004-05-13 01:38:40 +04:00
parent b2efad935b
commit a46d7542c9
28 changed files with 3720 additions and 500 deletions
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include/my_bitmap.h
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@@ -46,6 +46,8 @@ extern my_bool bitmap_is_set(const MY_BITMAP *map, uint bitmap_bit);
extern my_bool bitmap_is_set_all(const MY_BITMAP *map);
extern my_bool bitmap_is_subset(const MY_BITMAP *map1, const MY_BITMAP *map2);
extern uint bitmap_set_next(MY_BITMAP *map);
extern uint bitmap_get_first(const MY_BITMAP *map);
extern uint bitmap_bits_set(const MY_BITMAP *map);
extern void bitmap_clear_all(MY_BITMAP *map);
extern void bitmap_clear_bit(MY_BITMAP *map, uint bitmap_bit);
extern void bitmap_free(MY_BITMAP *map);