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The pilot implementation of mwl#250: Use the statistics from persistent

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statistical tables instead of the statistics provided by engine.
This commit is contained in:
Igor Babaev
2012-04-11 17:14:06 -07:00
parent ff3d16fba8
commit 1c0a89afcc
15 changed files with 706 additions and 52 deletions
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2
sql/sql_join_cache.cc
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@ -3788,7 +3788,7 @@ uint JOIN_TAB_SCAN_MRR::aux_buffer_incr(ulong recno)
uint incr= 0;
TABLE_REF *ref= &join_tab->ref;
TABLE *tab= join_tab->table;
uint rec_per_key= tab->key_info[ref->key].rec_per_key[ref->key_parts-1];
uint rec_per_key= tab->key_info[ref->key].real_rec_per_key(ref->key_parts-1);
set_if_bigger(rec_per_key, 1);
if (recno == 1)
incr= ref->key_length + tab->file->ref_length;