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Change optimizer_use_mrr=auto|disable|force

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to be optimizer_switch flags mrr=on|off and mrr_cost_based=on|off.
This commit is contained in:
Sergey Petrunya
2011-06-03 00:25:58 +04:00
parent c44c1bd188
commit 9482e387e6
14 changed files with 64 additions and 72 deletions
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31
sql/mysql_priv.h
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@ -575,18 +575,27 @@ protected:
#define OPTIMIZER_SWITCH_PARTIAL_MATCH_ROWID_MERGE (1<<11)
#define OPTIMIZER_SWITCH_PARTIAL_MATCH_TABLE_SCAN (1<<12)
#define OPTIMIZER_SWITCH_SUBQUERY_CACHE (1<<13)
#define OPTIMIZER_SWITCH_MRR_SORT_KEYS (1<<14)
#define OPTIMIZER_SWITCH_OUTER_JOIN_WITH_CACHE (1<<15)
#define OPTIMIZER_SWITCH_SEMIJOIN_WITH_CACHE (1<<16)
#define OPTIMIZER_SWITCH_JOIN_CACHE_INCREMENTAL (1<<17)
#define OPTIMIZER_SWITCH_JOIN_CACHE_HASHED (1<<18)
#define OPTIMIZER_SWITCH_JOIN_CACHE_BKA (1<<19)
#define OPTIMIZER_SWITCH_OPTIMIZE_JOIN_BUFFER_SIZE (1<<20)
/** If this is off, MRR is never used. */
#define OPTIMIZER_SWITCH_MRR (1ULL << 14)
/**
If OPTIMIZER_SWITCH_MRR is on and this is on, MRR is used depending on a
cost-based choice ("automatic"). If OPTIMIZER_SWITCH_MRR is on and this is
off, MRR is "forced" (i.e. used as long as the storage engine is capable of
doing it).
*/
#define OPTIMIZER_SWITCH_MRR_COST_BASED (1ULL << 15)
#define OPTIMIZER_SWITCH_MRR_SORT_KEYS (1ULL << 16)
#define OPTIMIZER_SWITCH_OUTER_JOIN_WITH_CACHE (1ULL << 17)
#define OPTIMIZER_SWITCH_SEMIJOIN_WITH_CACHE (1ULL << 18)
#define OPTIMIZER_SWITCH_JOIN_CACHE_INCREMENTAL (1ULL << 19)
#define OPTIMIZER_SWITCH_JOIN_CACHE_HASHED (1ULL << 20)
#define OPTIMIZER_SWITCH_JOIN_CACHE_BKA (1ULL << 21)
#define OPTIMIZER_SWITCH_OPTIMIZE_JOIN_BUFFER_SIZE (1ULL << 22)
#ifdef DBUG_OFF
# define OPTIMIZER_SWITCH_LAST (1<<21)
# define OPTIMIZER_SWITCH_LAST (1ULL << 23)
#else
# define OPTIMIZER_SWITCH_TABLE_ELIMINATION (1<<21)
# define OPTIMIZER_SWITCH_LAST (1<<22)
# define OPTIMIZER_SWITCH_TABLE_ELIMINATION (1ULL << 23)
# define OPTIMIZER_SWITCH_LAST (1ULL << 24)
#endif
#ifdef DBUG_OFF
@ -608,6 +617,7 @@ enabled by default, add OPTIMIZER_SWITCH_MATERIALIZATION
OPTIMIZER_SWITCH_PARTIAL_MATCH_ROWID_MERGE|\
OPTIMIZER_SWITCH_PARTIAL_MATCH_TABLE_SCAN|\
OPTIMIZER_SWITCH_SUBQUERY_CACHE|\
OPTIMIZER_SWITCH_MRR|\
OPTIMIZER_SWITCH_MRR_SORT_KEYS|\
OPTIMIZER_SWITCH_SUBQUERY_CACHE | \
OPTIMIZER_SWITCH_JOIN_CACHE_INCREMENTAL | \
@ -628,6 +638,7 @@ enabled by default, add OPTIMIZER_SWITCH_MATERIALIZATION
OPTIMIZER_SWITCH_PARTIAL_MATCH_ROWID_MERGE|\
OPTIMIZER_SWITCH_PARTIAL_MATCH_TABLE_SCAN|\
OPTIMIZER_SWITCH_SUBQUERY_CACHE|\
OPTIMIZER_SWITCH_MRR|\
OPTIMIZER_SWITCH_MRR_SORT_KEYS|\
OPTIMIZER_SWITCH_JOIN_CACHE_INCREMENTAL | \
OPTIMIZER_SWITCH_JOIN_CACHE_HASHED | \