procedure_study.sql

-- MySQL dump 10.17  Distrib 10.3.18-MariaDB, for debian-linux-gnu (x86_64)
--
-- Host: localhost    Database: work
-- ------------------------------------------------------
-- Server version	10.3.18-MariaDB-1:10.3.18+maria~bionic-log

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8mb4 */;
/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
/*!40103 SET TIME_ZONE='+00:00' */;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;

--
-- Current Database: `work`
--

CREATE DATABASE /*!32312 IF NOT EXISTS*/ `work` /*!40100 DEFAULT CHARACTER SET utf8mb4 */;

USE `work`;

--
-- Table structure for table `db1`
--

DROP TABLE IF EXISTS `db1`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `db1` (
  `USERNAME` varchar(30) NOT NULL,
  `MONEY` varchar(100) NOT NULL,
  PRIMARY KEY (`USERNAME`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
/*!40101 SET character_set_client = @saved_cs_client */;

--
-- Dumping data for table `db1`
--

LOCK TABLES `db1` WRITE;
/*!40000 ALTER TABLE `db1` DISABLE KEYS */;
INSERT INTO `db1` VALUES ('zetian','[4,100] - [5,30] - [11,70]');
/*!40000 ALTER TABLE `db1` ENABLE KEYS */;
UNLOCK TABLES;

--
-- Table structure for table `db2`
--

DROP TABLE IF EXISTS `db2`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `db2` (
  `username` varchar(100) NOT NULL,
  `goods` varchar(100) NOT NULL,
  `money` varchar(100) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
/*!40101 SET character_set_client = @saved_cs_client */;

--
-- Dumping data for table `db2`
--

LOCK TABLES `db2` WRITE;
/*!40000 ALTER TABLE `db2` DISABLE KEYS */;
INSERT INTO `db2` VALUES ('zetian','4','100');
/*!40000 ALTER TABLE `db2` ENABLE KEYS */;
UNLOCK TABLES;

--
-- Table structure for table `test_country`
--

DROP TABLE IF EXISTS `test_country`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `test_country` (
  `country_code` char(3) NOT NULL COMMENT 'numeric',
  `country_name` varchar(100) NOT NULL COMMENT 'ISO 3166-1 country name',
  `alpha3` char(3) NOT NULL COMMENT 'alpha-3',
  `alpha2` char(2) NOT NULL COMMENT 'alpha-2',
  `division` varchar(100) NOT NULL COMMENT 'country division',
  PRIMARY KEY (`country_code`),
  UNIQUE KEY `uq1` (`alpha3`),
  UNIQUE KEY `uq2` (`alpha2`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 ROW_FORMAT=DYNAMIC COMMENT='ISO 3166-1 country';
/*!40101 SET character_set_client = @saved_cs_client */;

--
-- Dumping data for table `test_country`
--

LOCK TABLES `test_country` WRITE;
/*!40000 ALTER TABLE `test_country` DISABLE KEYS */;
/*!40000 ALTER TABLE `test_country` ENABLE KEYS */;
UNLOCK TABLES;

--
-- Dumping routines for database 'work'
--
/*!50003 DROP FUNCTION IF EXISTS `SPLIT_STR` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = utf8mb4 */ ;
/*!50003 SET character_set_results = utf8mb4 */ ;
/*!50003 SET collation_connection  = utf8mb4_general_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = 'IGNORE_SPACE,STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION' */ ;
DELIMITER ;;
CREATE DEFINER=`root`@`%` FUNCTION `SPLIT_STR`(
  x VARCHAR(255),
  delim VARCHAR(12),
  pos INT
) RETURNS varchar(255) CHARSET utf8mb4
RETURN REPLACE(SUBSTRING(SUBSTRING_INDEX(x, delim, pos),
       CHAR_LENGTH(SUBSTRING_INDEX(x, delim, pos -1)) + 1),
       delim, "") ;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!50003 DROP PROCEDURE IF EXISTS `TABLEMIGRATION` */;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = utf8mb4 */ ;
/*!50003 SET character_set_results = utf8mb4 */ ;
/*!50003 SET collation_connection  = utf8mb4_general_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = 'IGNORE_SPACE,STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION' */ ;
DELIMITER ;;
CREATE DEFINER=`root`@`%` PROCEDURE `TABLEMIGRATION`(in name varchar(30))
begin
	declare _money VARCHAR(30);
	declare part1 VARCHAR(30);
	declare part2 VARCHAR(30);
	declare part3 VARCHAR(30);

	select MONEY into _money from db1 where USERNAME = name;
	select _money;

	select split_str(_money,' - ',1) into part1;
	select split_str(_money,' - ',2) into part2;
	select split_str(_money,' - ',3) into part3;
	
	set part1 = replace(replace(part1,'[',''),']','');
	set part2 = replace(replace(part2,'[',''),']','');
	set part3 = replace(replace(part3,'[',''),']','');

-- 	select concat("|",part1,"|");
-- 	select concat("|",part2,"|");
-- 	select concat("|",part3,"|");

	INSERT INTO `work`.db2 (username,goods,money) VALUES (name,split_str(part1,',',1),split_str(part1,',',2));
    INSERT INTO `work`.db2 (username,goods,money) VALUES (name,split_str(part2,',',1),split_str(part2,',',2));
    INSERT INTO `work`.db2 (username,goods,money) VALUES (name,split_str(part3,',',1),split_str(part3,',',2));
end ;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;

/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;

-- Dump completed on 2019-09-17  9:26:22

数据表迁移

问题：完成业务表的升级，将db1中的MONEY实现物品的分类并存储到db2新表中

db1:

USERNAME|MONEY                     |
--------|--------------------------|
zetian  |[4,100] - [5,30] - [11,70]|

db2:

username|goods|money|
--------|-----|-----|
zetian  |4    |100  |
zetian  |5    |30   |
zetian  |11   |70   |

工具函数：SPLIT_STR

DELIMITER ;;
CREATE DEFINER=`root`@`%` FUNCTION `SPLIT_STR`(
  x VARCHAR(255),
  delim VARCHAR(12),
  pos INT
) RETURNS varchar(255) CHARSET utf8mb4
RETURN REPLACE(SUBSTRING(SUBSTRING_INDEX(x, delim, pos),
       CHAR_LENGTH(SUBSTRING_INDEX(x, delim, pos -1)) + 1),
       delim, "") ;;
DELIMITER ;

例子：
MariaDB [work]> select SPLIT_STR("aaa,,bbb,,ccc",",,",2);
+----------------------------------+
| SPLIT_STR("aaa,,bbb,ccc",",,",2) |
+----------------------------------+
| bbb                              |
+----------------------------------+
1 row in set (0.001 sec)

存储过程：TABLEMIGRATION
DELIMITER ;;
CREATE DEFINER=`root`@`%` PROCEDURE `TABLEMIGRATION`(in name varchar(30))
begin
        declare _money VARCHAR(30);
        declare part1 VARCHAR(30);
        declare part2 VARCHAR(30);
        declare part3 VARCHAR(30);

        select MONEY into _money from db1 where USERNAME = name;
        select _money;

        select split_str(_money,' - ',1) into part1;
        select split_str(_money,' - ',2) into part2;
        select split_str(_money,' - ',3) into part3;

        set part1 = replace(replace(part1,'[',''),']','');
        set part2 = replace(replace(part2,'[',''),']','');
        set part3 = replace(replace(part3,'[',''),']','');

--      select concat("|",part1,"|");
--      select concat("|",part2,"|");
--      select concat("|",part3,"|");

        INSERT INTO `work`.db2 (username,goods,money) VALUES (name,split_str(part1,',',1),split_str(part1,',',2));
    INSERT INTO `work`.db2 (username,goods,money) VALUES (name,split_str(part2,',',1),split_str(part2,',',2));
    INSERT INTO `work`.db2 (username,goods,money) VALUES (name,split_str(part3,',',1),split_str(part3,',',2));
end ;;
DELIMITER ;

例子：
MariaDB [work]> call TABLEMIGRATION('zetian');
+----------------------------+
| _money                     |
+----------------------------+
| [4,100] - [5,30] - [11,70] |
+----------------------------+
1 row in set (0.001 sec)