我曾尝试使用临时表来简化查询,但收到错误消息。 这是我的疑问:
SELECT E.ID, E.name
INTO #TmpEmplyee
FROM Employee E, Outsourcing O, Student S
WHERE E.ID NOT IN (SELECT ID FROM Student UNION SELECT ID FROM Outsourcing)
SELECT R.name, I.startDate, T.name
FROM Role R, Inn I, #TmpEmplyee T
WHERE I.name = R.name AND I.ID = T.id
错误是:
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FROM Employee E, Outsourcing O, Student S WHERE E.ID NOT IN (SELECT ID FROM Stud' at line 3
感谢您的帮助!
答案 0 :(得分:1)
INSERT INTO #TmpEmplyee
SELECT E.ID, E.name
FROM Employee E
WHERE E.ID NOT IN (SELECT ID FROM Student UNION SELECT ID FROM Outsourcing)
答案 1 :(得分:1)
尝试一下,
SELECT R.name, I.startDate, T.name
FROM Role R
INNER JOIN Inn I
ON I.name = R.name
INNER JOIN
(
SELECT E.ID, E.name
-- remember that the join below produces CROSS JOIN
FROM Employee E, Outsourcing O, Student S
WHERE E.ID NOT IN ( SELECT ID FROM Student
UNION
SELECT ID FROM Outsourcing)
) T ON I.ID = T.id
答案 2 :(得分:0)
要从选择中创建临时表,您应该使用此语法
CREATE TEMPORARY TABLE mytemptable
SELECT Field1, Field2
FROM mytable;