您绝对可以为此使用触发器
假设您将该字段设置为可空
CREATE TABLE `listings` (
`ListingID` int(11) NOT NULL,
`BathsFull` int(6), <-----
PRIMARY KEY (`ListingID`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
扳机
DELIMITER $$
CREATE TRIGGER tg_lst_insert BEFORE INSERT ON listings
FOR EACH ROW
BEGIN
SET NEW.BathsFull = IFNULL(NEW.BathsFull, 0);
END $$
DELIMITER ;
插入一些行
INSERT INTO `listings` VALUES(1, '');
INSERT INTO `listings` VALUES(3, 'a');
INSERT INTO `listings` VALUES(4, NULL);
INSERT INTO `listings` (ListingID) VALUES(2);
INSERT INTO `listings` VALUES(5, 3);
结果
+-----------+-----------+
| ListingID | BathsFull |
+-----------+-----------+
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 3 |
+-----------+-----------+
602392714
清零编程群