Question

我想在sql server中搜索具有两个特定列名ex（columnA和columnB）的表。我有一个搜索一个列名称的查询

SELECT name FROM sysobjects WHERE id IN 
( SELECT id FROM syscolumns WHERE name = 'columnA' )

我不知道如何修改它来搜索两列。

Answer 1

SELECT name FROM sysobjects WHERE id IN 
( SELECT id FROM syscolumns WHERE name = 'columnA' )
and id in 
( SELECT id FROM syscolumns WHERE name = 'columnB' )

应该这样做。

Answer 2

这是正确的方法：

select so.name 
from sysobjects so 
where so.type = 'U' -- it's a user's table
and exists (select * from syscolumns sc where sc.id = so.id and sc.name='columnA')
and exists (select * from syscolumns sc where sc.id = so.id and sc.name='columnB')

检查它是否是用户表非常重要。相反，你可以找到视图，表值函数等。

Answer 3

尝试类似：

select syscolumns.id, sysobjects.name from syscolumns 
  join sysobjects so on sysobjects.id = syscolumns.id
 where exists (select 1 from syscolumns sc where sc.id = syscolumns.id and name = 'columnA') 
   and exists (select 1 from syscolumns sc2 where sc2.id = syscolumns.id and name = 'columnB')

查找具有两个指定列名的SQL Server表

3 个答案: