-- -- Update MontageLayout table to have UserId -- SELECT 'Checking for UserId in MontageLayouts'; SET @s = (SELECT IF( (SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name = 'MontageLayouts' AND table_schema = DATABASE() AND column_name = 'UserId' ) > 0, "SELECT 'Column UserId already exists in MontageLayouts'", "ALTER TABLE `MontageLayouts` ADD COLUMN `UserId` int(10) UNSIGNED NOT NULL DEFAULT 0 AFTER `Name`" )); PREPARE stmt FROM @s; EXECUTE stmt;