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

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:)

其他回答

取而代之的是使用WHERE EXISTS语法。

SELECT *
FROM table1
WHERE EXISTS (SELECT *
              FROM table2
              WHERE Lead_Key = @Lead_Key
                        AND table1.CM_PLAN_ID = table2.CM_PLAN_ID
                        AND table1.Individual_ID = table2.Individual_ID)

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:

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

*** t-sql ***

我使用string_agg作为廉价的hack来获得cheep上的一些伪规范化。(好吧,它是多路复用的,我知道它很糟糕,我用一些精心制作的80年代风格的盒子图来补偿你的痛苦,享受吧!~)

这里有一个例子(想出名字替代品很有趣:D)

select 
    vendorId,   
    affiliate_type_code, 
    parent_vendor_id,
    state_abbr,
    county_abbr,
    litigation_activity_indicator,
    string_agg(employee_id,',') as employee_ids,
    string_agg(employee_in_deep_doodoo,',') as 'employee-inventory connections'
from (
    select distinct top 10000 -- so I could pre-order my employee id's - didn't want mixed sorting in those concats
    mi.missing_invintory_identifier as rqid,
    vendorId,   
    affiliate_type_code, 
    parent_vendor_id,
    state_abbr,
    county_abbr,
    litigation_activity_indicator,
    employee_identifier as employee_id,
    concat(employee_identifier,'-',mi.missing_invintory_identifier) as employee_in_deep_doodoo
    from 
        missing_invintory as mi 
        inner join vendor_employee_view as ev
        on mi.missing_invintory_identifier = ev.missing_invintory_identifier        
    where ev.litigation_activity_indicator = 'N'
    order by employee_identifier desc

)  as x
    group by 
    vendorId,   
    affiliate_type_code, 
    parent_vendor_id,
    state_abbr,
    county_abbr,
    litigation_activity_indicator
    having count(employee_id) > 1



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┃ vendorId ┃ affiliate_type ┃ parent_vendor_id ┃ state_abbr ┃ county_abbr       ┃ litigation_indicator ┃ employee_ids        ┃ employee-inventory connections ┃
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┃      123 ┃ EXP            ┃               17 ┃ CA         ┃ SDG               ┃ N                    ┃ 112358,445678       ┃ 112358-1212,1534490-1212       ┃
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┃     4567 ┃ PRI            ┃              202 ┃ TX         ┃ STB               ┃ Y                    ┃ 998754,332165       ┃ 998754-4545,332165-4545        ┃
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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

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