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Fixed bug #18767.

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The bug caused wrong result sets for union constructs of the form
(SELECT ... ORDER BY order_list1 [LIMIT n]) ORDER BY order_list2.
For such queries order lists were concatenated and limit clause was
completely neglected.
This commit is contained in:
igor@rurik.mysql.com
2006-04-20 22:15:38 -07:00
parent bc1f457194
commit fc7514151f
7 changed files with 127 additions and 22 deletions
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2
sql/sql_union.cc
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@ -184,7 +184,7 @@ int st_select_lex_unit::prepare(THD *thd_arg, select_result *sel_result,
thd_arg->lex->current_select= sl= first_select= first_select_in_union();
found_rows_for_union= first_select->options & OPTION_FOUND_ROWS;
is_union= test(first_select->next_select());
is_union= test(first_select->next_select() || fake_select_lex);
/* Global option */