我需要在SQL Server中实现以下查询:
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。我如何比较2个或更多的列与另一个内部选择?
我需要在SQL Server中实现以下查询:
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。我如何比较2个或更多的列与另一个内部选择?
当前回答
select * from tab1 where (col1,col2) in (select col1,col2 from tab2)
注意: Oracle忽略一个或多个所选列为NULL的行。在这些情况下,你可能想要使用NVL-Funktion将NULL映射到一个特殊的值(不应该在值中);
select * from tab1
where (col1, NVL(col2, '---') in (select col1, NVL(col2, '---') from tab2)
其他回答
select * from tab1 where (col1,col2) in (select col1,col2 from tab2)
注意: Oracle忽略一个或多个所选列为NULL的行。在这些情况下,你可能想要使用NVL-Funktion将NULL映射到一个特殊的值(不应该在值中);
select * from tab1
where (col1, NVL(col2, '---') in (select col1, NVL(col2, '---') from tab2)
我觉得这样更容易
Select *
from table1
WHERE (convert(VARCHAR,CM_PLAN_ID) + convert(VARCHAR,Individual_ID))
IN
(
Select convert(VARCHAR,CM_PLAN_ID) + convert(VARCHAR,Individual_ID)
From CRM_VCM_CURRENT_LEAD_STATUS
Where Lead_Key = :_Lead_Key
)
希望这对你有所帮助:)
如果你想要一个表,然后使用以下查询
SELECT S.*
FROM Student_info S
INNER JOIN Student_info UT
ON S.id = UT.id
AND S.studentName = UT.studentName
where S.id in (1,2) and S.studentName in ('a','b')
并表中数据如下
id|name|adde|city
1 a ad ca
2 b bd bd
3 a ad ad
4 b bd bd
5 c cd cd
然后输出如下
id|name|adde|city
1 a ad ca
2 b bd bd
简单的EXISTS子句是最干净的
select *
from table1 t1
WHERE
EXISTS
(
Select * --or 1. No difference...
From CRM_VCM_CURRENT_LEAD_STATUS Ex
Where Lead_Key = :_Lead_Key
-- correlation here...
AND
t1.CM_PLAN_ID = Ex.CM_PLAN_ID AND t1.CM_PLAN_ID = Ex.Individual_ID
)
如果相关性中有多行,那么JOIN会在输出中给出多行,因此需要distinct。这通常使EXISTS更有效。
注意带有JOIN的SELECT *还包括行限制表中的列
查询:
select ord_num, agent_code, ord_date, ord_amount
from orders
where (agent_code, ord_amount) IN
(SELECT agent_code, MIN(ord_amount)
FROM orders
GROUP BY agent_code);
上面的查询在mysql中为我工作。 参考下面的链接——>
https://www.w3resource.com/sql/subqueries/multiplee-row-column-subqueries.php