Bug #17896: MIN of CASE WHEN returns non-minimum value! (b9fc8e1f) · Commits · Software / OSDI20 Artifacts / mariadb

sql/item_cmpfunc.cc

+5 −1

Original line number	Diff line number	Diff line
		@@ -39,20 +39,24 @@ static void agg_result_type(Item_result type, Item *items, uint nitems)
		{
		Item item, item_end;

		/* Note: NULL items don't affect the result type */
		*type= STRING_RESULT;
		/* Skip beginning NULL items */
		for (item= items, item_end= item + nitems; item < item_end; item++)
		{
		if ((*item)->type() != Item::NULL_ITEM)
		{
		type= (item)->result_type();
		item++;
		break;
		}
		}
		/* Combine result types. Note: NULL items don't affect the result */
		for (; item < item_end; item++)
		{
		if ((*item)->type() != Item::NULL_ITEM)
		type= item_store_type(type[0], (item)->result_type());
		}
		}

		static void agg_cmp_type(Item_result type, Item *items, uint nitems)
		{