0 66 20:23:32 insert into tb_orderdetail values ('1', '2023052700101', '20230527001', '1', '1', '2','未发货', '未收货', '55.00') Error Code: 1366. Incorrect integer value: '未收货' for column 'sigletotalprice' at row 1 0.000 sec如何修改以上代码
时间: 2023-08-06 07:18:27 浏览: 184
可以将 '未收货' 转换为一个数字或者将 sigletotalprice 列的数据类型修改为字符串类型。如果你想将 '未收货' 转换为数字,可以使用 MySQL 中的 CASE 语句,具体实现方法如下:
```
INSERT INTO tb_orderdetail
VALUES ('1', '2023052700101', '20230527001', '1', '1', '2', '未发货',
CASE WHEN '未收货' THEN 0 ELSE 55.00 END);
```
如果你想将 sigletotalprice 列的数据类型修改为字符串类型,可以使用以下命令:
```
ALTER TABLE tb_orderdetail MODIFY COLUMN sigletotalprice VARCHAR(10);
```
这将把 sigletotalprice 列的类型从整数类型修改为字符串类型,并可以存储 '未收货' 这样的文本值。
相关问题
use online_bookstore; CREATE TRIGGER trig1 on tb_bookinfo FOR UPDATE AS IF UPDATE(BookStoremount) BEGIN DECLARE @mount INT SET @mount = (SELECT BookStoremount FROM deleted) IF (@mount < 0) BEGIN PRINT '库存不足,库存为空' ROLLBACK END END以上代码有什么错误,该如何修改 以下代码如何断句create trigger trig2 on tb_orderdetail for insert,update as begin declare @mount int,@price money,@sigleprice money,@totalprice money set @mount=(select ordermount from inserted) set @totalprice=(select totalprice from tb_order,inserted where tb_order.orderid=inserted.orderid) set @price=(select bookprice from tb_bookinfo,inserted where tb_bookinfo.bookid=inserted.bookid) set @sigleprice=@mount*@price update tb_orderdetail set sigletotalprice=@sigleprice where orderdetailid=(select orderdetailid from inserted ) update tb_order set totalprice=(@totalprice+@sigleprice) where orderid=(select orderid from inserted) end go
在第一个代码段中,应该在IF语句中加入对BookStoremount列的判断条件,以防止其他列的更新也触发该触发器。同时,在触发器中应该使用ROLLBACK TRANSACTION语句来回滚事务。
正确的代码如下:
```
USE online_bookstore;
GO
CREATE TRIGGER trig1 ON tb_bookinfo FOR UPDATE
AS
IF UPDATE(BookStoremount)
BEGIN
DECLARE @mount INT
SET @mount = (SELECT BookStoremount FROM inserted)
IF (@mount < 0)
BEGIN
PRINT '库存不足,库存为空'
ROLLBACK TRANSACTION
END
END
GO
```
在第二个代码段中,应该使用逗号分隔符将INSERT和UPDATE操作分开,以便正确指定触发器应该响应的操作。
同时,应该使用JOIN语句来连接tb_order和inserted表,以便正确计算totalprice值。
正确的代码如下:
```
USE online_bookstore;
GO
CREATE TRIGGER trig2 ON tb_orderdetail FOR INSERT, UPDATE
AS
BEGIN
DECLARE @mount INT, @price MONEY, @sigleprice MONEY, @totalprice MONEY
SET @mount = (SELECT ordermount FROM inserted)
SET @totalprice = (SELECT SUM(tb_orderdetail.sigletotalprice) FROM tb_orderdetail WHERE tb_orderdetail.orderid = (SELECT orderid FROM inserted))
SET @price = (SELECT bookprice FROM tb_bookinfo WHERE tb_bookinfo.bookid = (SELECT bookid FROM inserted))
SET @sigleprice = @mount * @price
UPDATE tb_orderdetail SET sigletotalprice = @sigleprice WHERE orderdetailid = (SELECT orderdetailid FROM inserted)
UPDATE tb_order SET totalprice = @totalprice + @sigleprice FROM tb_order INNER JOIN inserted ON tb_order.orderid = inserted.orderid
END
GO
```
帮我翻译ALTER TABLE OrderDetail ADD CONSTRAINT PK_OrderDetail PRIMARY KEY (OrderID, ProductID);
ALTER TABLE OrderDetail ADD CONSTRAINT PK_OrderDetail PRIMARY KEY (OrderID, ProductID) 的翻译是:在 OrderDetail 表中添加一个名为 PK_OrderDetail 的约束,将 OrderID 和 ProductID 两列作为主键。
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