我想在调用过程时创建动态触发器,它给出了 mysql 服务器版本语法错误,当我选择该查询并在单独的查询编辑器中执行时,它将被执行。
DROP TABLE IF EXISTS auditLog;
CREATE TABLE `auditlog` (
`tableName` VARCHAR(255) DEFAULT NULL,
`rowPK` INT(11) DEFAULT NULL,
`fieldName` VARCHAR(255) DEFAULT NULL,
`old_value` VARCHAR(255) DEFAULT NULL,
`new_value` VARCHAR(255) DEFAULT NULL,
`ts` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=ARCHIVE;
CREATE TABLE country(countryname VARCHAR(100);
DROP PROCEDURE IF EXISTS addLogTrigger;
DELIMITER $
/*
call addLogTrigger('country','CountryID','CountryName')
*/
CREATE PROCEDURE addLogTrigger
(IN tableName VARCHAR(255), IN pkField VARCHAR(255),IN column_name VARCHAR(50))
BEGIN
SET @qry = CONCAT
(
'
DROP TRIGGER IF EXISTS ', tableName, '_AU ;
CREATE TRIGGER ', tableName, '_AU AFTER UPDATE ON ', tableName, '
FOR EACH ROW
','
INSERT INTO auditLog (',
'tableName, ',
'rowPK, ',
'fieldName, ',
'old_value, ',
'new_value'
') VALUES
( ''',
tablename, ''', NEW.',
pkField, ', ''',
column_name, ''', OLD.',
column_name, ', NEW.',
column_name,
');
'
, '
'
) ;
SELECT @qry;
PREPARE stmt FROM @qry;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
END$
DELIMITER ;