SQL WHERE.. IN 子句多列 [英] SQL WHERE.. IN clause multiple columns

问题描述

我需要在 SQL Server 中实现以下查询:

I need to implement the following query in SQL Server:

select *
from table1
WHERE  (CM_PLAN_ID,Individual_ID)
IN
(
 Select CM_PLAN_ID, Individual_ID
 From CRM_VCM_CURRENT_LEAD_STATUS
 Where Lead_Key = :_Lead_Key
)

但是 WHERE..IN 子句只允许 1 列.如何将 2 列或更多列与另一个内部 SELECT 进行比较?

But the WHERE..IN clause allows only 1 column. How can I compare 2 or more columns with another inner SELECT?

推荐答案

你可以从子查询中创建一个派生表，并将 table1 连接到这个派生表:

You can make a derived table from the subquery, and join table1 to this derived table:

select * from table1 LEFT JOIN 
(
   Select CM_PLAN_ID, Individual_ID
   From CRM_VCM_CURRENT_LEAD_STATUS
   Where Lead_Key = :_Lead_Key
) table2
ON 
   table1.CM_PLAN_ID=table2.CM_PLAN_ID
   AND table1.Individual=table2.Individual
WHERE table2.CM_PLAN_ID IS NOT NULL

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