2
我正在尝试编写一个存储过程来包装SHOW CREATE TABLE。我的最终目标是动态查找information_schema中的模式名称并运行SHOW CREATE TABLE schema.tableName。mysql存储过程执行SHOW CREATE TABLE
看来我不能在存储过程中运行SHOW CREATE TABLE。
DELIMITER $$
DROP PROCEDURE IF EXISTS ct$$
CREATE PROCEDURE ct (tableName VARCHAR(50))
BEGIN
SHOW CREATE TABLE tableName;
END$$
DELIMITER ;
mysql> CALL ct('users');
ERROR 1146 (42S02): Table 'adcentraldb.tableName' doesn't exist
mysql>
对于那些有兴趣这就是我最终的SHOW创建一个工作
DELIMITER $$
DROP PROCEDURE IF EXISTS ct$$
-- Wraps around SHOW CREATE TABLE. Look at other schemas other than current.
CREATE PROCEDURE ct (tableName VARCHAR(50))
BEGIN
DECLARE dbName VARCHAR(50);
SET dbName = (SELECT `TABLE_SCHEMA` FROM `INFORMATION_SCHEMA`.`TABLES`
WHERE `TABLE_NAME` = tableName LIMIT 1);
SET @a=CONCAT("SHOW CREATE TABLE ", dbName, '.', tableName);
PREPARE stmt1 FROM @a;
EXECUTE stmt1;
DEALLOCATE PREPARE stmt1;
END$$
DELIMITER ;
无法将数据库或表名称作为参数传递给MySQL存储过程。相反,您需要构建一个SQL字符串和'EXECUTE()'它,这意味着您还必须谨慎对待SQL注入。 – 2012-04-13 01:20:36
查看[这个问题](http://stackoverflow.com/questions/9993908/passing-fieldname-as-parameter-in-mysql-stored-procedure) – 2012-04-13 01:22:10
@Yada我的答案是否适合你? – 2012-04-13 12:13:18