使用DECLARE在MySQL中创建变量

Question

我会承认，我是一个T-SQL人，不是MySQL人，但我不太明白为什么我收到此错误消息：

#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 'DECLARE @UpdatedID VARCHAR(5)' at line 1 

这是我的问题：

DECLARE @UpdatedID VARCHAR(5);

SET @UpdatedID = 63;

CREATE TABLE tmp_markers (SELECT * FROM tmp_markers2);

UPDATE tmp_markers
SET Id = Id+1
WHERE Id >= @UpdatedID;

UPDATE tmp_markers
SET Id = @UpdatedID
WHERE Id = MAX(Id);

DELETE from tmp_markers2;

INSERT INTO tmp_markers2
(SELECT * FROM tmp_markers ORDER BY id);

DROP TABLE tmp_markers

Answer 1

在MySQL中声明一个变量是用你所做的：

完成的

SET @UpdatedID = 63;

DECLARE语句用于存储过程。请参阅this。