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unknown authored
resolve_const_item() assumed to be not called for Item_row items. For ensuring that DBUG_ASSERT(0) was set there. This patch adds section for Item_row items. If it can it recursively calls resolve_const_item() for each item the Item_row contains. If any of the contained items is null then whole Item_row substitued by Item_null. Otherwise it just returns. sql/item.cc: Fix bug#13356 resolve_const_item() wasn't able to handle Item_row items. Added section to resolve_const_item() for Item_row items. If it can it recursively calls resolve_const_item() for each item the Item_row contains. If any of the contained items is null then Item_row is substituted by Item_null. Otherwise it just returns. Comment moved closer to function it belongs to. mysql-test/t/select.test: Test case for bug#13356 resolve_const_item() wasn't able to handle Item_row items. mysql-test/r/select.result: Test case for bug#13356 resolve_const_item() wasn't able to handle Item_row items.
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