SQL Server查询上正确

Question

连接两个表我有两个表

一个是债权表，另一个包含编辑

我被ClaimID的

加入

我只希望有一个205 ClaimIDs编辑，但不是913.我需要为连接做些什么？

所以可以说是编辑E和进出口检验e.RuleID可以有205，但不是913（每个ClaimID的可以有无限的编辑）

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)