Question

我有一个带有NOT IN子句的SQL查询，但它执行的时间太长。任何人都可以帮我替换以下查询中的NOT IN。

Select 
    RIGHT(P.PARTNERDESCRIPTION, LEN(P.PARTNERDESCRIPTION) - CHARINDEX('-', P.PARTNERDESCRIPTION)) AS Channel, 
    C.CorporateId, C.corporatename,  
    MAX(convert(date,E.C3DeletionVerification))
from 
    employee E, Corporate C, Partners P
where 
    E.corporateid = C.corporateid
    and C.partner = P.partnercode
    and C.Corporateid not in (select CorporateId
                              from employee
                              where DeletionVerification is null
                                and CardNo IS NOT NULL
                              group by CorporateId)
group by 
    RIGHT(P.PARTNERDESCRIPTION, LEN(P.PARTNERDESCRIPTION) - CHARINDEX('-', P.PARTNERDESCRIPTION)), 
    C.CorporateId, C.corporatename
order by 
    MAX(convert(date, E.DeletionVerification))

Answer 1

您可以将CTE用于查询并使用它，如下所示：

with emp as (select CorporateId
                              from employee
                              where DeletionVerification is null
                                and CardNo IS NOT NULL
                              group by CorporateId)
Select 
    RIGHT(P.PARTNERDESCRIPTION, LEN(P.PARTNERDESCRIPTION) - CHARINDEX('-', P.PARTNERDESCRIPTION)) AS Channel, 
    C.CorporateId, C.corporatename,  
    MAX(convert(date,E.C3DeletionVerification))
from 
    employee E, Corporate C, Partners P , emp ep
where 
    E.corporateid = C.corporateid
    and C.partner = P.partnercode
    and C.Corporateid <> ep.CorporateId
group by 
    RIGHT(P.PARTNERDESCRIPTION, LEN(P.PARTNERDESCRIPTION) - CHARINDEX('-', P.PARTNERDESCRIPTION)), 
    C.CorporateId, C.corporatename
order by 
    MAX(convert(date, E.DeletionVerification))

注意：未经测试。感谢

Answer 2

请尝试稍微更改的此查询，但我希望它会更有效。

SELECT
RIGHT(P.PARTNERDESCRIPTION, LEN(P.PARTNERDESCRIPTION) - CHARINDEX('-', P.PARTNERDESCRIPTION)) AS Channel, 
C.CorporateId, C.corporatename,  
MAX(CONVERT(date,E.C3DeletionVerification))
FROM employee E
INNER JOIN Corporate C ON C.corporateid = E.corporateid 
INNER JOIN Partners P ON P.partnercode = C.partner
WHERE NOT EXISTS(
    SELECT DISTINCT CorporateId
    FROM employee
    WHERE CorporateId = c.Corporateid
    AND DeletionVerification IS NULL
    AND CardNo IS NOT NULL
)
GROUP BY RIGHT(P.PARTNERDESCRIPTION, LEN(P.PARTNERDESCRIPTION) - CHARINDEX('-', P.PARTNERDESCRIPTION)), C.CorporateId, C.corporatename
ORDER BY MAX(convert(date, E.DeletionVerification))

带有＆＃39; NOT IN＆＃39;的SQL查询花了太多时间

2 个答案: