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Sergei Golubchik authored
MDEV-4281 Assertion `maybe_null && item->null_value' fails in make_sortkey on CASE with different return types, GROUP_CONCAT, GROUP BY Fix Item::get_date() to mark the item NULL when returning an error.
019f7425
MDEV-4281 Assertion `maybe_null && item->null_value' fails in make_sortkey on CASE with different return types, GROUP_CONCAT, GROUP BY Fix Item::get_date() to mark the item NULL when returning an error.