mysql数据库-定义函数-存储过程写法

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mysql  定义自定义函数写法

DELIMITER $$

USE `iwmsdb`$$

DROP FUNCTION IF EXISTS `F_WM_DBNAME`$$

CREATE DEFINER=`mysqladmin`@`%` FUNCTION `F_WM_DBNAME`(v_warehouse_id VARCHAR(50)) RETURNS VARCHAR(50) CHARSET gbk
BEGIN
   DECLARE V_DB   VARCHAR(50);/*是打发*/

   SELECT a.db_name
   INTO V_DB
   FROM iwmsdb.t_wm_db_warehouse a
   WHERE a.warehouse_id = v_warehouse_id;

   RETURN V_DB;
END$$

DELIMITER ;

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mysql 存储过程写法

DELIMITER $$

USE `iwmsdb`$$

DROP PROCEDURE IF EXISTS `P_EAP_UI_DELETEINDEXMENU`$$

CREATE DEFINER=`mysqladmin`@`%` PROCEDURE `P_EAP_UI_DELETEINDEXMENU`(IN APP_ID INT)
BEGIN
    DECLARE MENU_COUNT INT;
    DECLARE MENU_ID VARCHAR(36);
    DECLARE PARENT_MENU_ID VARCHAR(36);

    SELECT COUNT(1) INTO MENU_COUNT FROM T_CP_UI_SYSTEMAPP A , T_EAP_SYS_MENU B  WHERE A.FUNCTION_ID=B.MENU_ID;
         IF MENU_COUNT > 0 THEN
         BEGIN
                                     SELECT FUNCTION_ID INTO MENU_ID FROM T_CP_UI_SYSTEMAPP WHERE APP_ID=APP_ID;
                   SELECT PARENT_MENU_ID INTO PARENT_MENU_ID FROM T_EAP_SYS_MENU WHERE MENU_ID = MENU_ID;
                   SELECT COUNT(1) INTO MENU_COUNT FROM T_EAP_SYS_MENU WHERE PARENT_MENU_ID=PARENT_MENU_ID;
                   IF MENU_COUNT=1 THEN
                   BEGIN
                            DELETE FROM T_EAP_SYS_MENU WHERE MENU_ID IN (MENU_ID,PARENT_MENU_ID);
                            DELETE FROM T_CP_UI_FOLDER WHERE FOLDER_ID=PARENT_MENU_ID;
                            DELETE FROM T_CP_UI_FOLDERREFUSER WHERE FOLDER_ID=PARENT_MENU_ID;
                            DELETE FROM T_EAP_SYS_USER_PRIV WHERE OBJECT_ID IN (MENU_ID,PARENT_MENU_ID);
                   END;
                   ELSE
                   BEGIN
                            DELETE FROM T_EAP_SYS_MENU WHERE MENU_ID = MENU_ID;
                            DELETE FROM T_EAP_SYS_USER_PRIV WHERE OBJECT_ID =MENU_ID;
                   END;
                   END IF;
         END;
         END IF;
END$$

DELIMITER ;