diff options
Diffstat (limited to 'sql/sql_select.cc')
| -rw-r--r-- | sql/sql_select.cc | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/sql/sql_select.cc b/sql/sql_select.cc index c70e0d5b7e2..1eaa1ced0b8 100644 --- a/sql/sql_select.cc +++ b/sql/sql_select.cc @@ -26228,7 +26228,22 @@ AGGR_OP::end_send() rc= NESTED_LOOP_KILLED; } else + { + /* + In case we have window functions present, an extra step is required + to compute all the fields from the temporary table. + In case we have a compound expression such as: expr + expr, + where one of the terms has a window function inside it, only + after computing window function values we actually know the true + final result of the compounded expression. + + Go through all the func items and save their values once again in the + corresponding temp table fields. Do this for each row in the table. + */ + if (join_tab->window_funcs_step) + copy_funcs(join_tab->tmp_table_param->items_to_copy, join->thd); rc= evaluate_join_record(join, join_tab, 0); + } } // Finish rnd scn after sending records |