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| author | Sergey Petrunya <psergey@askmonty.org> | 2011-03-21 23:06:16 +0300 |
|---|---|---|
| committer | Sergey Petrunya <psergey@askmonty.org> | 2011-03-21 23:06:16 +0300 |
| commit | d56e74eb9ba27ae98884b9ddb37c3d7a575b50fe (patch) | |
| tree | b72181de895cc81668691b7a4457a8136b9a1dda /sql/sql_join_cache.cc | |
| parent | 792c67ff618f7fa5edb39563b0ccf48b4a30db0f (diff) | |
| download | mariadb-git-d56e74eb9ba27ae98884b9ddb37c3d7a575b50fe.tar.gz | |
MWL#90: Address review feedback part #2
Diffstat (limited to 'sql/sql_join_cache.cc')
| -rw-r--r-- | sql/sql_join_cache.cc | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sql/sql_join_cache.cc b/sql/sql_join_cache.cc index bdc944d8d6c..face1f9196e 100644 --- a/sql/sql_join_cache.cc +++ b/sql/sql_join_cache.cc @@ -3235,6 +3235,13 @@ int JOIN_TAB_SCAN::next() } +/* + Walk back in join order from join_tab until we encounter a join tab with + tab->cache!=NULL, and save/restore tab->table->status along the way. + + @param save TRUE save + FALSE restore +*/ void save_or_restore_used_tabs(JOIN_TAB *join_tab, bool save) { JOIN_TAB *first= join_tab->bush_root_tab? @@ -3251,6 +3258,7 @@ void save_or_restore_used_tabs(JOIN_TAB *join_tab, bool save) { if (save) child->table->status= child->status; + else { tab->status= tab->table->status; tab->table->status= 0; |