Question

我有两张桌子

一个是声明表，另一个是编辑

我正在加入ClaimID

我只想要具有205编辑但不是913的ClaimID。我需要为连接做些什么？

所以让我们说Edits是e而我正在检查e.RuleID可以有205，但不是913（每个claimid可以有无限制的编辑）

Answer 1

SELECT * FROM Claims AS c
WHERE EXISTS (
    SELECT * FROM Edits AS e1
    WHERE c.ClaimID = e1.ClaimID 
    AND e1.RuleId=205)
AND NOT EXISTS (
    SELECT * FROM Edits AS e2
    WHERE c.ClaimID = e2.ClaimID
    AND e2.RuleId=913)

Answer 2

SELECT Edit205.ClaimID
FROM Edits Edit205
LEFT JOIN Edits Edit913
ON Edit205.ClaimID = Edit913.ClaimID AND Edit913.RuleID = 913
WHERE Edit205.RuleID = 205
AND Edit913.ClaimID IS NULL

工作sqlfiddle here

Answer 3

这样做：

SELECT *
FROM Claims C
WHERE NOT EXISTS(SELECT 1 
                 FROM Edits 
                 WHERE Edit = 913 AND ClaimId = C.ClaimId)
AND EXISTS (SELECT 1 
            FROM Edits 
            WHERE Edit = 205 AND ClaimId = C.ClaimId)

正确连接两个表的SQL Server查询

3 个答案: