MySQL创建函数时报错'ERROR 1336 (0A000): Dynamic SQL'怎么办

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创建函数时报错
mysql delimiter $$
mysql CREATE FUNCTION is_SQLScriptReferenceExist (THE_REFERENCE VARCHAR(75), THE_VERSION_LEVEL_TABLE_NAME VARCHAR(75)) RETURNS INTEGER DETERMINISTIC
– BEGIN
– DECLARE THE_REFERENCE_LABEL VARCHAR(80);
– DECLARE CONTINUE HANDLER FOR NOT FOUND
– BEGIN
– RETURN 0;
– END;
– SELECT concat(select c_reference_label INTO THE_REFERENCE_LABEL from , THE_VERSION_LEVEL_TABLE_NAME, where C_REFERENCE_LABEL = , THE_REFERENCE,) INTO @stmt;
– PREPARE STMT FROM @stmt;
– EXECUTE STMT;
– /* select c_reference_label into THE_REFERENCE_LABEL from THE_VERSION_LEVEL_TABLE_NAME where C_REFERENCE_LABEL = THE_REFERENCE; */
– RETURN 1;
– END$$
ERROR 1336 (0A000): Dynamic SQL is not allowed in stored function or trigger
mysql delimiter ;

报错原因：
MySQL 函数和触发器中不允许使用动态函数

可以改写成存储过程
mysql delimiter $$
mysql CREATE PROCEDURE is_SQLScriptReferenceExist (IN THE_REFERENCE VARCHAR(75), IN THE_VERSION_LEVEL_TABLE_NAME VARCHAR(75), OUT V_RET INT(2))
– BEGIN
– DECLARE THE_REFERENCE_LABEL VARCHAR(80);
– DECLARE CONTINUE HANDLER FOR NOT FOUND
– BEGIN
– SET V_RET = 0;
– END;
– SELECT concat(select c_reference_label INTO THE_REFERENCE_LABEL from , THE_VERSION_LEVEL_TABLE_NAME, where C_REFERENCE_LABEL = , THE_REFERENCE,) INTO @stmt;
– PREPARE STMT FROM @stmt;
– EXECUTE STMT;
– /* select c_reference_label into THE_REFERENCE_LABEL from THE_VERSION_LEVEL_TABLE_NAME where C_REFERENCE_LABEL = THE_REFERENCE; */
– SET V_RET = 1;
– END$$
Query OK, 0 rows affected (0.00 sec)

mysql delimiter ;

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