MySQL 连接表 WHERE 子句

Question

我有 2 个表:Member 和 Member_Card。 Member_Card 有一个列链接到 Member Id 列，因此 Member 与 Member_Card 具有一对多关系

我输出一个 JSON，例如:

{
    "Name" : "Member Name",
    "Cards": [
            { "Card_No" : "1234"},
            { "Card_No" : "4321"}
         ]
}

Member 和 Member_Card 都有 LastModifiedDate 列。

我的查询是这样的:

SELECT Name FROM Member 
LEFT JOIN Member_Card 
    ON Member_Card.Member = Member.id 
WHERE Member.LastModifiedDate >= sinceDate 
    OR Member_Card.LastModifiedDate >= sinceDate

此查询的问题是，它只会返回自sinceDate以来修改的卡/成员(member)(即，如果成员(member)有2张卡，并且其中一张在sinceDate之后被修改，则只会返回1张卡)。我想返回成员(member)及其所有卡，无论是卡还是成员(member)本身在sinceDate之后被修改。

我怎样才能这样查询？或者我需要运行 2 个查询吗？

Answer 1

SELECT member.*,c.* from member inner join (
SELECT distinct member.id as  mid FROM Member 
INNER JOIN Member_Card 
    ON Member_Card.Member = Member.id 
and ( Member.LastModifiedDate >= sinceDate  
    OR Member_Card.LastModifiedDate >= sinceDate ) ) a on a.mid=member.id
inner join member_card c on c.member=a.mid