mysql存储过程示例
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2022-06-06 19:56:41
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CREATE PROCEDURE `pro_auto_subject`() COMMENT '数据迁移' BEGIN /**procedure body**/ DECLARE autoSubjectID INT DEFAULT 0; DECLARE professionID INT DEFAULT 0; DECLARE _done INT DEFAULT 0; DECLARE cur_1 CURSOR FOR SELECT s.`id` AS autoSubjectID,p.`id` AS professionID FROM `auto_subject` s join `profession` p on(s.`profession_new_id`=p.`new_id` ); DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET _done=1; OPEN cur_1; REPEAT FETCH cur_1 INTO autoSubjectID,professionID; IF NOT _done THEN UPDATE auto_subject SET `profession` = professionID WHERE `id` =autoSubjectID; END IF; UNTIL _done END REPEAT; CLOSE cur_1; END
1、mysql以下直接在sql窗口可以创建存储过程,格式如下:
/*----套餐表迁移---- */ DELIMITER ;; DROP PROCEDURE IF EXISTS `pro_move_meal` $$ CREATE PROCEDURE `pro_move_meal`() COMMENT '套餐表迁移(meal表->benefit_package表)' BEGIN /**procedure body**/ DECLARE p_id VARCHAR(50); DECLARE p_createTime VARCHAR(100); -- 创建时间 DECLARE p_updateTime VARCHAR(100);-- 更新时间 DECLARE p_createUser VARCHAR(100);-- 创建人 DECLARE p_updateUser VARCHAR(100);-- 更新人 DECLARE p_isDeleted VARCHAR(100);-- 是否删除 0否1是 -- DECLARE p_type INT DEFAULT NULL;-- 类型 1 次数套餐 2 优惠券套餐 DECLARE p_name VARCHAR(100); -- 套餐名称 DECLARE p_des VARCHAR(500); -- 套餐说明 DECLARE _done INT DEFAULT 0; DECLARE cur_1 CURSOR FOR /* 套餐表 */ select id,create_time,update_time,create_user,update_user,is_deleted,name,des from `airport_cloud`.meal; DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET _done=1; OPEN cur_1; REPEAT FETCH cur_1 INTO p_id,p_createTime,p_updateTime,p_createUser,p_updateUser,p_isDeleted,p_name,p_des; IF NOT _done THEN /** 新表-benefit_package*/ insert into benefit_package(old_id,old_table,create_time,update_time,create_userid,update_userid,is_deleted,package_name,description) values(p_id,'meal',p_createTime,p_updateTime,p_createUser,p_updateUser,p_isDeleted,p_name,p_des); END IF; UNTIL _done END REPEAT; CLOSE cur_1; END;; DELIMITER ;
2、清空mysql数据库中所有表数据
/*----清空account_service数据库中所有表数据---- */ DELIMITER ;; CREATE PROCEDURE `pro_clear_database`() BEGIN DECLARE count INT; DECLARE tb VARCHAR(200); DECLARE dbname VARCHAR(200) DEFAULT 'account_service'; -- 清理数据库名 DECLARE tbnames cursor FOR SELECT CONCAT('TRUNCATE TABLE `',dbname,'`.`',table_name,'`') FROM information_schema.tables WHERE table_schema = dbname; SELECT count(*) INTO count FROM information_schema.tables WHERE table_schema = dbname; OPEN tbnames; loop_i:LOOP IF count = 0 THEN LEAVE loop_i; END IF; FETCH tbnames INTO tb; SET @tb = tb; PREPARE stmt FROM @tb; EXECUTE stmt; DEALLOCATE PREPARE stmt; SET count = count - 1; END LOOP; CLOSE tbnames; END;; DELIMITER ;
3、防止select into游标不循环
/*----用户休息室权益使用记录表数据迁移---- */ DELIMITER ;; CREATE PROCEDURE `pro_move_benefit_use_record`() COMMENT '用户休息室权益使用记录表数据迁移(benefit_use_record表->user_lounge_benefit_records表)' BEGIN /**procedure body**/ DECLARE p_id VARCHAR(50); DECLARE p_orderNo VARCHAR(100); -- 订单 DECLARE p_openId VARCHAR(500); -- openid DECLARE p_benefitId VARCHAR(500); -- 权益id DECLARE p_count VARCHAR(500); -- 次数 DECLARE p_createTime VARCHAR(100); -- 创建时间 DECLARE p_createUser VARCHAR(100);-- 创建人 DECLARE p_isDeleted VARCHAR(100);-- 是否删除 0否1是 DECLARE p_loungeBenefitId bigint(20) default 0; -- 新表权益id DECLARE _done INT DEFAULT 0; DECLARE cur_1 CURSOR FOR /* 套餐表 */ select id,order_no,open_id,benefit_id,count,create_time,create_user,is_deleted from `airport_cloud`.benefit_use_record; DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET _done=1; OPEN cur_1; REPEAT FETCH cur_1 INTO p_id,p_orderNo,p_openId,p_benefitId,p_count,p_createTime,p_createUser,p_isDeleted; IF NOT _done THEN -- 查新id select id from lounge_benefit where old_id=p_benefitId into p_loungeBenefitId; insert into user_lounge_benefit_records (is_move,old_benefit_id,old_table,create_userid,create_time,is_deleted,open_id,lounge_benefit_id, consume_count,order_no) values('1',p_benefitId,'benefit_use_record',p_createUser,p_createTime,p_isDeleted,p_openId, p_loungeBenefitId,p_count,p_orderNo); set _done = 0; -- 防止select into 游标不循环 END IF; UNTIL _done END REPEAT; CLOSE cur_1; END;; DELIMITER ;
4、大量数据插入性能问题,目前有80w多数据要迁移,按正常一秒只能插入5条左右数据,这样算需要迁移1天左右。现用批量commit性能大大提升。见以下代码:
DELIMITER ;; CREATE PROCEDURE `pro_move_user_third_party_benefit_one`() COMMENT '第三方权益数据迁移-韩国免税金卡(third_party_benefit表->user_third_party_benefit表)' BEGIN /**procedure body**/ DECLARE p_id VARCHAR(50); DECLARE p_userId VARCHAR(100); -- 用户id DECLARE p_openId VARCHAR(100); -- openid DECLARE p_mobile VARCHAR(100); -- 手机号 DECLARE p_gradeId VARCHAR(100); -- 等级id DECLARE p_gradeVersion VARCHAR(100); -- 等级版本 DECLARE p_thirdPartyBenefitId VARCHAR(100); -- 第三方权益id DECLARE p_benefitVersion VARCHAR(100); -- 第三方权益版本号 DECLARE p_benefitPackageId VARCHAR(100);-- 套餐id DECLARE p_effectiveStartDate VARCHAR(100) default null;-- 开始日期 DECLARE p_effectiveEndDate VARCHAR(100) default null; -- 结束日期 DECLARE _done INT DEFAULT 0; DECLARE cur_1 CURSOR FOR /* 表 */ select a.wx_client_id,a.open_id from `airport_cloud_test`.client_info a where a.client_phone_verified=1; DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET _done=1; OPEN cur_1; SET AUTOCOMMIT=0; -- 只提交一次 REPEAT FETCH cur_1 INTO p_userId,p_openId; IF NOT _done THEN -- 查第三方权益 select id,benefit_version from `account_service`.third_party_benefit where benefit_name='韩国免税金卡' into p_thirdPartyBenefitId,p_benefitVersion; -- 套餐id select benefit_package_id from benefit_package_relation where is_deleted=0 and benefit_id=p_thirdPartyBenefitId limit 0,1 into p_benefitPackageId; -- 查手机、等级、有效期等信息 select mobile,grade_id,grade_version,effective_start_date,effective_end_date from user_grade where is_deleted=0 and open_id=p_openId limit 0,1 into p_mobile,p_gradeId,p_gradeVersion, p_effectiveStartDate,p_effectiveEndDate; -- 插入第三方权益 insert into user_third_party_benefit (is_move,is_deleted,user_id,open_id,mobile,source_type,source,third_party_benefit_id, third_party_benefit_version,grade_id,grade_version,send_type,create_time, effective_start_date,effective_end_date) values('1',0,p_userId,p_openId,p_mobile,2,p_benefitPackageId,p_thirdPartyBenefitId, p_benefitVersion,p_gradeId,p_gradeVersion,1,now(),p_effectiveStartDate,p_effectiveEndDate); set _done = 0; -- 防止select into 游标不循环 END IF; UNTIL _done END REPEAT; commit; CLOSE cur_1; END;; DELIMITER ;
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