MySQL创建一个变量的用户? [英] MySQL CREATE USER with a variable?
本文介绍了MySQL创建一个变量的用户?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想这样做:
#Variables
SET @username="jdoe", @password="secret";
# Insert a new MySQL User
CREATE USER @username@'localhost' IDENTIFIED BY @password;GRANT USAGE ON *.* TO @username@'localhost' IDENTIFIED BY @password WITH MAX_QUERIES_PER_HOUR 120 MAX_CONNECTIONS_PER_HOUR 60 MAX_UPDATES_PER_HOUR 60 MAX_USER_CONNECTIONS 2;
但是得到:
#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 '@username@'localhost' IDENTIFIED BY @password' at line 2
如何在CREATE USER语句中使用变量?
How do I use a variable in the CREATE USER statement?
推荐答案
您可以将dynamic SQL
用作:
SET @query1 = CONCAT('
CREATE USER "',@username,'"@"localhost" IDENTIFIED BY "',@password,'" '
);
PREPARE stmt FROM @query1; EXECUTE stmt; DEALLOCATE PREPARE stmt;
SET @query1 = CONCAT('
GRANT USAGE ON *.* TO "',@username,'"@"localhost" IDENTIFIED BY "',@password,'" WITH
MAX_QUERIES_PER_HOUR 120 MAX_CONNECTIONS_PER_HOUR 60 MAX_UPDATES_PER_HOUR 60
MAX_USER_CONNECTIONS 2'
);
PREPARE stmt FROM @query1; EXECUTE stmt; DEALLOCATE PREPARE stmt;
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