我有一个带有这样的not in子句的查询：
select *
FROM COMPANY c
where c.company_id not In (SELECT SenderId
FROM CrossRef)
and c.id not in (select company_id
FROM USER)
我想知道是否有一种方法可以在SQL Server 2008中使用左联接重写查询。
我尝试了以下方法，但未给出正确的结果
select c.id, c.company_id
from COMPANY c
left join CrossRef cr on c.company_id != cr.senderid, COMPANY c1
left join USER u on c1.id != u.company_id
SELECT *
FROM Company C
LEFT JOIN CrossRef R ON R.SenderID = C.CompanyID
LEFT JOIN [User] U ON U.company_id = C.id
WHERE R.SenderID IS NULL
AND U.company_id IS NULL
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我来说两句