diff options
Diffstat (limited to 'sql/sql_union.cc')
| -rw-r--r-- | sql/sql_union.cc | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sql/sql_union.cc b/sql/sql_union.cc index f2b637dc5f4..c414f5e9e72 100644 --- a/sql/sql_union.cc +++ b/sql/sql_union.cc @@ -235,7 +235,13 @@ bool st_select_lex_unit::prepare(THD *thd_arg, select_result *sel_result, if ((res= (res || thd_arg->is_fatal_error))) goto err; - if (sl == first_select) + /* + Use items list of underlaid select for derived tables to preserve + information about fields lengths and exact types + */ + if (!is_union) + types= first_select_in_union()->item_list; + else if (sl == first_select) { /* We need to create an empty table object. It is used |