使用DECLARE在MySQL中创建变量
我承认,我是一个T-SQL的家伙,不是MySQL的家伙,但我不太明白为什么我会收到这个错误消息:使用DECLARE在MySQL中创建变量,mysql,variables,Mysql,Variables,我承认,我是一个T-SQL的家伙,不是MySQL的家伙,但我不太明白为什么我会收到这个错误消息: #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 我的问题是: DECLARE
#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
我的问题是:
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
在MySQL中声明变量的操作与您使用的操作相同:
SET @UpdatedID = 63;
DECLARE
语句用于存储过程中。请参阅。在没有存储例程/函数作用域的情况下,无法按照您指定的方式“声明”变量。