Question

我有一个产品平板电脑;因为有几个字段，如subcatid和designerid，分别来自Subcategories和Designers表。网站（ASP.NET C＃）管理员可以通过选择designerid或subcatid或两者来在CouponCodes表中插入某种优惠券代码。这意味着如果在CouponCodes表中找到该产品的designerid或subcatid字段或两者，则可以更便宜地销售特定产品。注意，产品不一定具有设计者名称或子蛋白质：管理员可以输入'N / A'作为产品输入; N / A在其各自的表中具有27的设计者和9的subcatid。可能不是最好的数据库设计。

无论如何，这是我在SSMS中的代码;当我尝试执行它时，我得到一个语法错误。如何实现sql？谢谢！

select * from couponcodes 
where ( couponcodes.subcatid in 
(select subcatid from Products where Products.prodid = 1012)
AND (couponcodes.couponcode = '5braceLets'))

OR 

Where  ( couponcodes.designerid in 
(select designerid from Products where Products.prodid = 1012)
AND (couponcodes.couponcode = '5dora'))

Answer 1

您有where两次导致语法错误。你想要做的是

select * from couponcodes 
where ( couponcodes.subcatid in 
(select subcatid from Products where Products.prodid = 1012)
AND (couponcodes.couponcode = '5braceLets'))
OR 
( couponcodes.designerid in 
(select designerid from Products where Products.prodid = 1012)
AND (couponcodes.couponcode = '5dora'))

sql server：使用OR子句选择任一条件？

1 个答案: