diff options
Diffstat (limited to 'sql/sql_union.cc')
| -rw-r--r-- | sql/sql_union.cc | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sql/sql_union.cc b/sql/sql_union.cc index c2ef25ce6a1..01b0eb9e6ec 100644 --- a/sql/sql_union.cc +++ b/sql/sql_union.cc @@ -104,11 +104,16 @@ bool select_union::flush() typedef JOIN * JOIN_P; int st_select_lex_unit::prepare(THD *thd, select_result *result) { + DBUG_ENTER("st_select_lex_unit::prepare"); + + if (prepared) + DBUG_RETURN(0); + prepared= 1; + describe=(first_select()->options & SELECT_DESCRIBE) ? 1 : 0; res= 0; found_rows_for_union= false; TMP_TABLE_PARAM tmp_table_param; - DBUG_ENTER("st_select_lex_unit::prepare"); this->thd= thd; this->result= result; SELECT_LEX *lex_select_save= thd->lex.select, *sl; |