Question

我在SQLite数据库中创建的这个表：

CREATE TABLE [tickets] (
[id] INTEGER  PRIMARY KEY AUTOINCREMENT NOT NULL,
[coupon_id] INTEGER  NULL,
[size] FLOAT  NULL,
[phone] VARCHAR(10)  NULL,
[date] DATE DEFAULT CURRENT_DATE NULL,
[time] TIME DEFAULT CURRENT_TIME NULL,
[product] TEXT  NULL
);

现在我在mysql中转换这个表

CREATE TABLE tickets (
id INTEGER  PRIMARY KEY AUTO_INCREMENT NOT NULL,
coupon_id INTEGER  NULL,
size FLOAT  NULL,
phone VARCHAR(10)  NULL,
date TIMESTAMP DEFAULT CURRENT_TIMESTAMP NULL,
time TIMESTAMP DEFAULT CURRENT_TIMESTAMP NULL,
product TEXT  NULL
);

INSERT INTO "tickets" VALUES(429,9,18.16,'949-893-5032','2010-11-30','17:46:39','Kids’ Kups Berry Interesting&trade;');
INSERT INTO "tickets" VALUES(430,9,12.04,'847-188-1359','2010-11-25','10:54:00','Raspberry Collider&trade;');
INSERT INTO "tickets" VALUES(431,9,14.1,'204-682-5560','2010-12-08','15:34:07','Celestial Cherry High&trade;');

当我插入这些值时，我收到错误ERROR 1293 (HY000): Incorrect table definition; there can be only one TIMESTAMP column with CURRENT_TIMESTAMP in DEFAULT or ON UPDATE clause.

我能够在SQLite中插入所有这些值，但我无法将所有这些值插入到MySQL中。帮帮我？

Answer 1

据我所知，MySQL不允许这样做。如果要将当前时间插入第二个字段，请考虑在插入时使用触发器更新记录。

DELIMITER $$
CREATE TRIGGER curtime BEFORE INSERT ON tickets FOR EACH ROW
BEGIN
SET NEW.time = CURRENT_TIMESTAMP();
END;
$$
DELIMITER ;

Answer 2

您可能想转换

date TIMESTAMP DEFAULT CURRENT_TIMESTAMP NULL,
time TIMESTAMP DEFAULT CURRENT_TIMESTAMP NULL,

到

created TIMESTAMP DEFAULT CURRENT_TIMESTAMP NULL,

并连接SQLite中的值，或更改其类型

date date DEFAULT NULL,
time time DEFAULT NULL,

并使用trigger添加当前日期/时间。

INSERT适用于SQLite但不适用于MySQL

2 个答案: