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Fixed bug #27348.

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If a set function with a outer reference s(outer_ref) cannot be aggregated 
the outer query against which the reference has been resolved then MySQL
interpretes s(outer_ref) in the same way as it would interpret s(const).
Hovever the standard requires throwing an error in this situation.
Added some code to support this requirement in ansi mode.
Corrected another minor bug in Item_sum::check_sum_func.
This commit is contained in:
igor@olga.mysql.com
2007-03-27 09:48:10 -07:00
parent ce9cc47a73
commit adc07255ee
3 changed files with 55 additions and 2 deletions
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7
sql/item_sum.cc
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@@ -149,6 +149,8 @@ bool Item_sum::check_sum_func(THD *thd, Item **ref)
if (register_sum_func(thd, ref))
return TRUE;
invalid= aggr_level < 0 && !(allow_sum_func & (1 << nest_level));
if (!invalid && thd->variables.sql_mode & MODE_ANSI)
invalid= aggr_level < 0 && max_arg_level < nest_level;
}
if (!invalid && aggr_level < 0)
{
@@ -164,8 +166,9 @@ bool Item_sum::check_sum_func(THD *thd, Item **ref)
Additionally we have to check whether possible nested set functions
are acceptable here: they are not, if the level of aggregation of
some of them is less than aggr_level.
*/
invalid= aggr_level <= max_sum_func_level;
*/
if (!invalid)
invalid= aggr_level <= max_sum_func_level;
if (invalid)
{
my_message(ER_INVALID_GROUP_FUNC_USE, ER(ER_INVALID_GROUP_FUNC_USE),