Question

我有两张桌子：

表1

Name | Surname

表2

Introduce | Type

表2中的介绍包含Table1中的Name或Surname或两者。我列出了Table1中介绍中没有的所有记录，并且工作得很好。

我尝试做的是使用Table2中的Type来限制这些结果。

我正在尝试这样的代码：

select t1.Name, t1.Surname
from Table1 t1
where not exists (select 1 Introduce
                  from Table2 t2
                  where (t2.Introduce like ('%' + t1.Name+ '%') 
                         or t2.Introduce LIKE ('%' + t1.Surname + '%'))
                 )
  and exists (select Type
              from Table2
              where Type in (90, 120))

但如果我使用and exists...或不使用相同的结果，则没有区别。

Answer 1

将WHERE子句更改为

where not exists 
    (   SELECT 1 Introduce
        from Table2 t2
        where (t2.Introduce like ('%' + t1.Name+ '%') or t2.Introduce LIKE ('%' + t1.Surname + '%'))
        and T2.Type in (90, 120)
    )

您的设计需要改变。它不应该被非规范化

Answer 2

select t1.Name, t1.Surname
from Table1 t1
where not exists 
    (   SELECT 1 Introduce
        from Table2 t2
        where (t2.Introduce like ('%' + t1.Name+ '%') or t2.Introduce LIKE ('%' + t1.Surname + '%'))
        and T2.Type in (90, 120)
    )

Answer 3

试试这个：

select name, surname from table1 [t1]
left join (select * from table2 where type in (90, 120)) [t2]
on CHARINDEX([t1].name, [t2].Introduce) > 0 or CHARINDEX([t1].surname, [t2].Introduce) > 0
where [t2].introduce is null

在结果中搜索SQL Server

3 个答案: