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sql_union.cc:

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Check DERIVATION_NONE only for UNIONS.
This commit is contained in:
bar@mysql.com
2004-10-19 11:45:33 +05:00
parent f8c7a60c34
commit cdd9d656b4
1 changed files with 6 additions and 5 deletions
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11
sql/sql_union.cc
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@ -264,9 +264,14 @@ int st_select_lex_unit::prepare(THD *thd_arg, select_result *sel_result,
}
}
if (first_select->next_select())
{
// it is not single select
/*
Check that it was possible to aggregate all collations together.
Check that it was possible to aggregate
all collations together for UNION.
*/
List_iterator_fast<Item> tp(types);
Item *type;
@ -279,11 +284,7 @@ int st_select_lex_unit::prepare(THD *thd_arg, select_result *sel_result,
goto err;
}
}
}
// it is not single select
if (first_select->next_select())
{
union_result->tmp_table_param.field_count= types.elements;
if (!(table= create_tmp_table(thd_arg,
&union_result->tmp_table_param, types,