diff options
Diffstat (limited to 'sql/item_row.cc')
| -rw-r--r-- | sql/item_row.cc | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sql/item_row.cc b/sql/item_row.cc index 3cc7e602b15..23cafe7ec31 100644 --- a/sql/item_row.cc +++ b/sql/item_row.cc @@ -16,6 +16,15 @@ #include "mysql_priv.h" +/* + Row items used for comparing rows and IN operations on rows: + + (a, b, c) > (10, 10, 30) + (a, b, c) = (select c, d, e, from t1 where x=12) + (a, b, c) IN ((1,2,2), (3,4,5), (6,7,8) + (a, b, c) IN (select c, d, e, from t1) +*/ + Item_row::Item_row(List<Item> &arg): Item(), used_tables_cache(0), array_holder(1), const_item_cache(1) { |