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Merge DS-MRR/CPK improvements into 5.3-main

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This commit is contained in:
Sergey Petrunya
2010-12-13 13:42:40 +03:00
parent 419d524ff9 14ca046833
commit 58b646001a
41 changed files with 3250 additions and 534 deletions
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4
sql/sql_select.cc
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@ -7749,11 +7749,11 @@ uint check_join_cache_usage(JOIN_TAB *tab,
case JT_EQ_REF:
if (cache_level <=2 || (no_hashed_cache && no_bka_cache))
goto no_join_cache;
flags= HA_MRR_NO_NULL_ENDPOINTS;
flags= HA_MRR_NO_NULL_ENDPOINTS | HA_MRR_SINGLE_POINT;
if (tab->table->covering_keys.is_set(tab->ref.key))
flags|= HA_MRR_INDEX_ONLY;
rows= tab->table->file->multi_range_read_info(tab->ref.key, 10, 20,
tab->ref.key_parts,
&bufsz, &flags, &cost);
if ((cache_level <=4 && !no_hashed_cache) || no_bka_cache ||