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Merge MWL#67: MRR Backport and BKA backport.

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This commit is contained in:
Sergey Petrunya 2009-12-22 15:49:15 +03:00
commit 19c8976d85
26 changed files with 18523 additions and 436 deletions
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4
sql/opt_index_cond_pushdown.cc
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@ -319,9 +319,6 @@ void push_index_cond(JOIN_TAB *tab, uint keyno, bool other_tbls_ok)
{
Item *idx_remainder_cond= 0;
tab->pre_idx_push_select_cond= tab->select_cond;
#if 0
/*
psergey: enable the below when we backport BKA: */
/*
For BKA cache we store condition to special BKA cache field
because evaluation of the condition requires additional operations
@ -340,7 +337,6 @@ void push_index_cond(JOIN_TAB *tab, uint keyno, bool other_tbls_ok)
~(tab->table->map | tab->join->const_table_map)))
tab->cache_idx_cond= idx_cond;
else
#endif
idx_remainder_cond= tab->table->file->idx_cond_push(keyno, idx_cond);
/*