mysql存储过程调用含out参数

Posted 2021-01-16 活灵活现

mysql 数据库有以下存储过程：

CREATE DEFINER=`root`@`localhost` PROCEDURE `hovertreeTest`(
    IN `Param1` INT,
    IN `Param2` VARCHAR(50),
    OUT `Param3` INT

)
LANGUAGE SQL
NOT DETERMINISTIC
CONTAINS SQL
SQL SECURITY DEFINER
COMMENT \'测试\'
BEGIN

select param1;
select param2;
set Param3 = 6;

END

调用该存储过程的代码：

CALL `hovertreeTest`(\'9\', \'hovertree\',@hvt);
select @hvt;

结果：