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  • mysql 触发器示例

    示例1:

    DELIMITER $$
    USE `数据库名称`$$
    DROP TRIGGER /*!50032 IF EXISTS */ `触发器名称`$$
    CREATE
    /*!50017 DEFINER = 'root'@'%' */
      TRIGGER `触发器名称` AFTER INSERT ON `表名称` 
    FOR EACH ROW BEGIN
      -- INSERT INTO `表名称` VALUES (new.id,.....);
      INSERT INTO 表名称(HostUserID,TeamName,CanDelete) VALUES(new.Id,....);
    END;
    $$
    DELIMITER ;

    示例2:

    DELIMITER $$
    USE `数据库名称`$$
    DROP TRIGGER /*!50032 IF EXISTS */ `触发器名称`$$
    CREATE
    /*!50017 DEFINER = 'root'@'%' */
    TRIGGER `触发器名称` AFTER INSERT ON `表名称`

    FOR EACH ROW
    BEGIN

    DECLARE last_time DATETIME;

    DECLARE user_type INT;
    DECLARE service_type INT;
    SET last_time := (SELECT .....) ;

    SET user_type := (SELECT .....) ;

    SET service_type := (SELECT services_type.....) ;

    IF user_type <> x THEN
    UPDATE Onnetuser SET .... ;

    ELSEIF user_type = y THEN

    UPDATE Onnetuser SET ... ;

    ELSEIF user_type = d THEN

    IF service_type = t THEN

    UPDATE Onnetuser SET O...;

    ELSEIF service_type > h THEN

    IF new.`type_id` = 1 OR new.`type_id` = 2 OR new.`type_id` = 3 THEN

    UPDATE xxx SET ... ;

    END IF;

    END IF;

    END IF;

    END;
    $$

    DELIMITER ;

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  • 原文地址:https://www.cnblogs.com/lvdongjie/p/3715428.html
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