批量插入数据的存储过程

来自ITPUB的一位老兄。写的很好。贴出来。

 

DELIMITER $$

DROP PROCEDURE IF EXISTS `test`.`sp_insert_batch`$$

CREATE DEFINER=`root`@`localhost` PROCEDURE `sp_insert_batch`(IN number int(11))
BEGIN
  declare i int(11);
  set i = 1;
  -- such as 1-2000,2000-4000,....
  WHILE i <= number DO
    if mod(i,2000)=1 then
       set @sqltext =concat('(''',concat('t',i),''',''',now(),''',',ceil(10*rand()),')');
    elseif mod(i,2000)=0 then
       set @sqltext=concat(@sqltext,',(''',concat('t',i),''',''',now(),''',',ceil(10*rand()),')');
       set @sqltext=concat('insert into song (name,datetime,rank) values',@sqltext);
       prepare stmt from @sqltext;
       execute stmt;
       DEALLOCATE PREPARE stmt;
       set @sqltext='';
    else
       set @sqltext=concat(@sqltext,',(''',concat('t',i),''',''',now(),''',',ceil(10*rand()),')');
    end if;
    set i = i + 1;
  END WHILE;
  -- process when number is not be moded by 2000
  -- such as 2001,4002,15200,...
  if @sqltext<>'' then
     set @sqltext=concat('insert into song (name,datetime,rank) values',@sqltext);
     prepare stmt from @sqltext;
     execute stmt;
     DEALLOCATE PREPARE stmt;
     set @sqltext='';
  end if;
END$$

DELIMITER ;

附表结构。


/*DDL Information For - test.song*/
-----------------------------------



Table Create Table
------ ----------------------------------------------------------------------------------------
song CREATE TABLE `song` (
          `id` int(11) NOT NULL AUTO_INCREMENT COMMENT 'Autoincreament element',
          `name` text NOT NULL,
          `datetime` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
          `rank` int(11) NOT NULL,
          PRIMARY KEY (`id`)
        ) ENGINE=MyISAM AUTO_INCREMENT=8102001 DEFAULT CHARSET=gbk

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