mysql存储过程分库分表

-- 存储过程创建库  分为两条语句删除和创建
DELIMITER $$
USE myplan $$
DROP PROCEDURE IF EXISTS createDBN $$
CREATE PROCEDURE createDBN(IN n INT,IN dbName VARCHAR(100),IN dropSql VARCHAR(255),IN createSql VARCHAR(255))
BEGIN
  DECLARE i INT DEFAULT 0;
  WHILE i<n DO
    SET @tempName = CONCAT(dbName,CONVERT(i,CHAR(10)));
    SET @dropTempSql = REPLACE(dropSql,'${tbTempName}',@tempName);
    SET @dropTempSql2 = @dropTempSql;
    PREPARE dropSTMT FROM @dropTempSql2;
    EXECUTE dropSTMT;
    DEALLOCATE PREPARE dropSTMT;
 
    SET @createTempSql = REPLACE(createSql,'${tbTempName}',@tempName);
    SET @createTempSql2 = @createTempSql;
    PREPARE createSTMT FROM @createTempSql2;
    EXECUTE createSTMT;
    DEALLOCATE PREPARE createSTMT; 
 
    SET i=i+1;
  END WHILE;
END $$
 
SET @dropSql = "DROP DATABASE IF EXISTS ${tbTempName};";
SET @creSql = "CREATE database ${tbTempName} character set=utf8;";
CALL createDBN(5,'tl',@dropSql,@creSql);
 
 
-- 存储过程  批量删除数据库
DELIMITER $$
USE myplan $$
DROP PROCEDURE IF EXISTS delDBN $$
CREATE PROCEDURE delDBN(IN dbName VARCHAR(50),IN startValue INT,IN endValue INT)
BEGIN
  DECLARE i INT DEFAULT 0;
  DECLARE tempName VARCHAR(50);
  SET i = startValue;
  WHILE i<endValue DO
    SET tempName=CONCAT(dbName,CONVERT(i,CHAR(10)));
    SET @exeSql = CONCAT('drop database if exists ',tempName);
    PREPARE exeSTMT FROM @exeSql;
    EXECUTE exeSTMT;
    DEALLOCATE PREPARE exeSTMT;
  SET i=i+1;
  END WHILE;
END $$
 
CALL delDBN('tl',0,5);
 
 
-- 存储过程  批量创建数据库
DELIMITER $$
USE myplan $$
DROP PROCEDURE IF EXISTS createDBN2 $$
CREATE PROCEDURE createDBN2(IN n INT,IN dbName VARCHAR(100))
BEGIN
   DECLARE i INT DEFAULT 0;
   DECLARE tempName VARCHAR(50);
   WHILE i<n DO
      SET tempName = CONCAT(dbName,CAST(i AS CHAR(10)));
      SET @exeDropSql = CONCAT('drop database if exists ',tempName);
      SET @exeCreSql = CONCAT('create database ',tempName,' character set=utf8');
 
      -- 删除
      PREPARE exeDropSTMT FROM @exeDropSql;
      EXECUTE exeDropSTMT;
      DEALLOCATE PREPARE exeDropSTMT;
 
      -- 创建
      PREPARE exeCreSTMT FROM @exeCreSql;
      EXECUTE exeCreSTMT;
      DEALLOCATE PREPARE exeCreSTMT;
 
   SET i=i+1;
   END WHILE;
END $$
 
CALL createDBN2(5,'tl');
 
 
-- 存储过程  批量创建表
DELIMITER $$
USE myplan $$
DROP PROCEDURE IF EXISTS createTabN $$
CREATE PROCEDURE createTabN(IN dbN INT,IN tabN INT,IN dbName VARCHAR(50),IN tabName VARCHAR(50),IN creTabSql VARCHAR(1000))
BEGIN
  DECLARE i INT DEFAULT 0;
  DECLARE j INT DEFAULT 0;
  DECLARE tempName VARCHAR(100);
  WHILE i<dbN DO
     WHILE j<tabN DO
        SET tempName = CONCAT(dbName,CONVERT(i,CHAR(10)),'.',tabName,CAST(j AS CHAR(10)));
        SET @dropTabSql = CONCAT('drop table if exists ',tempName);
        SET @exeSql = REPLACE(creTabSql,'${fullTempName}',tempName);
        -- 删除表      
        PREPARE dropSTMT FROM @dropTabSql;
        EXECUTE dropSTMT;
        DEALLOCATE PREPARE dropSTMT;
 
        -- 创建表
        PREPARE exeSTMT FROM @exeSql;
        EXECUTE exeSTMT;
        DEALLOCATE PREPARE exeSTMT;
 
        SET j=j+1;
     END WHILE;
     SET i=i+1;
     SET j=0;
  END WHILE;
 
END $$
 
SET @tsql="
   create table ${fullTempName}(
      id int not null primary key auto_increment,
      lname varchar(10) 
   ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci;
";
 
CALL createTabN(5,10,'tl','ll',@tsql);
 
 
-- 存储过程  批量删除表
DELIMITER $$
USE myplan $$
DROP PROCEDURE IF EXISTS delTabN $$
CREATE PROCEDURE delTabN(IN dbN INT,IN tabN INT,IN dbName VARCHAR(50),IN tabName VARCHAR(50))
BEGIN
  DECLARE i INT DEFAULT 0;
  DECLARE j INT DEFAULT 0;
  WHILE i<dbN DO
     WHILE j<tabN DO
       SET @tempName=CONCAT(dbName,CONVERT(i,CHAR(10)),'.',tabName,CAST(j AS CHAR(10)));
       SET @dropSql=CONCAT('drop table if exists ',@tempName);
 
       PREPARE dropSTMT FROM @dropSql;
       EXECUTE dropSTMT;
       DEALLOCATE PREPARE dropSTMT;     
 
       SET j=j+1;
     END WHILE;
     SET j=0;
     SET i=i+1;
  END WHILE;
END $$
 
CALL delTabN(5,10,'tl','ll');
 
 
 
-- 存储过程  批量创建库 创建表
DELIMITER $$
USE myplan $$
DROP PROCEDURE IF EXISTS creDBAndTabN $$
CREATE PROCEDURE creDBAndTabN(IN dbN INT,IN tabN INT,IN dbName VARCHAR(50),IN tabName VARCHAR(50),IN tabSql VARCHAR(500))
BEGIN
   DECLARE i INT DEFAULT 0;
   DECLARE j INT DEFAULT 0;
   WHILE i<dbN DO
      SET @tempDBName = CONCAT(dbName,CAST(i AS CHAR(10)));
      SET @dropDBSql = CONCAT('drop database if exists ',@tempDBName);
      SET @creDBSql = CONCAT('create database ',@tempDBName,' character set=utf8');
 
      -- 删除库
      PREPARE dropDBSTMT FROM @dropDBSql;
      EXECUTE dropDBSTMT;
      DEALLOCATE PREPARE dropDBSTMT;
 
      -- 创建库
      PREPARE creDBSTMT FROM @creDBSql;
      EXECUTE creDBSTMT;
      DEALLOCATE PREPARE creDBSTMT;
 
      -- 创建表
      WHILE j<tabN DO
        SET @tempTabName = CONCAT(dbName,CAST(i AS CHAR(10)),'.',tabName,CAST(j AS CHAR(10)));
        SET @dropTabSql = CONCAT('drop table if exists ',@tempTabName);
        SET @creTabSql = REPLACE(tabSql,'${fullTabName}',@tempTabName);
 
        -- 删除表
        PREPARE dropTabSTMT FROM @dropTabSql;
        EXECUTE dropTabSTMT;
        DEALLOCATE PREPARE dropTabSTMT;
 
        -- 创建表
        PREPARE creTabSTMT FROM @creTabSql;
        EXECUTE creTabSTMT;
        DEALLOCATE PREPARE creTabSTMT;     
 
        SET j=j+1;
      END WHILE;
 
      SET i=i+1;
      SET j=0;
   END WHILE;
END $$
 
SET @tsql="
   create table ${fullTabName}(
      id int not null primary key auto_increment,
      lname varchar(10) 
   ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci;
";
 
CALL creDBAndTabN(5,10,'tl','ll',@tsql);