像多列查询一样

Question

在做这个查询时我得到了

转换nvarchar值时转换失败＆＃39; Dentist＆＃39;数据类型int。

如何解决这个问题？

select * from tblBusinessCategory as b
inner join tblUser as u
on b.BusinessID=u.BusinessCategoryId
inner join tblAddress as a
on u.AddressId=a.AddressID
where u.BusinessCategoryId in (select BusinessCategory from tblBusinessCategory where BusinessCategory LIKE '%d%') 

Answer 1

问题出在您的嵌套查询中：

in (select BusinessCategory from tblBusinessCategory where BusinessCategory LIKE '%d%')

应该是

in (select BusinessCategoryId from tblBusinessCategory where BusinessCategory LIKE '%d%')

Answer 2

<强>问题：

您正在子查询中选择BusinessCategory，即varchar。尝试将BusinessCategory转换为int类型时失败。

<强>解决方案：

您应该从表格BusinessCategoryId中选择tblBusinessCategory：

............
where u.BusinessCategoryId in (select BusinessCategoryId from tblBusinessCategory where BusinessCategory LIKE '%d%') 

修改

要对多个列执行类似操作，您可以执行以下操作：

where u.BusinessCategoryId in 
   (select BusinessCategoryId 
    from tblBusinessCategory 
    where BusinessCategory LIKE '%d%' 
       or BusinessName LIKE '%something%'
       or BusinessDescription like '%something%')