我有表foo1的列UserID,TimeStamp; foo2,列为userID,Level&table为foo3,列为userID,Timestamp.
我想从表foo2中存在UserID的foo3中插入foo1的所有行.
我收到错误1242:子查询返回超过1行以下
INSERT into foo1 (UserID,TimeStamp)
SELECT
(SELECT UserID from foo2 as UserID),
(SELECT foo3.TimeStamp
from foo3
inner join foo2
ON foo3.UserID=foo2.UserID) as TimeStamp