mysql - 在插入语句上查询外键（MySQL）

Question

如果我想同时找到一个主键并将其用作插入语句中的外键，那么我可以使用下面的查询（在这个问题上找到它）

INSERT INTO test (id, value) 
SELECT foobar.id, 20
FROM foobar WHERE name = 'joe';

但是如果我想插入多个外键怎么办？声明会如何？

INSERT INTO test (id1, id2, id3, value) 
SELECT foobar1.id, foobar2.id, foobar3.id, 20
FROM foobar1 WHERE name = 'joe'
FROM foobar2 WHERE name = 'joe'
FROM foobar3 WHERE name = 'joe';

谢谢

Answer 1

这行得通吗？：

INSERT INTO test ( id1, id2, id3, value ) 
SELECT 
foobar1.id, foobar2.id, foobar3.id, 20
FROM 
foobar1, foobar2, foobar3
WHERE 
foobar1.name = 'joe'
AND 
foobar2.name = 'joe'
AND 
foobar2.name = 'joe';

Answer 2

我想这就是你想要的：

INSERT INTO test (id1, id2, id3, value) 
SELECT foobar1.id, foobar2.id, foobar3.id, 20
FROM foobar1,foobar2, foobar3
WHERE foobar1.name = 'joe'
AND foobar2.name = 'joe'
AND foobar3.name = 'joe';