mysql - 如何从其他表中选择一行作为当前选择字段的 json 结果

Question

假设我有

A:
Id  Name
1    a
2    b

B:
Id  AId Date
1    2   123

我想构建一个类似这样的查询:

SELECT B.*,(SELECT * FROM A WHERE Id=B.AId) AS AJsonObject FROM B

Result:

Id AId Date     AJsonObject
1   2   123       {"Id":2, "Name":"b"}

我该如何执行此操作？

Answer 1

SELECT B.*,(SELECT * FROM A  inner join B on A.Id=B.AId) AS AJsonObject FROM B;