1、創(chuàng)建測試表
CREATE TABLE `mysql_genarate` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`uuid` varchar(50) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=5999001 DEFAULT CHARSET=utf8;
2、創(chuàng)建一個循環(huán)插入的存儲過程
CREATE DEFINER=`root`@`localhost` PROCEDURE `test_two1`( )
BEGIN
DECLARE i INT DEFAULT 0;
WHILE i 3000 DO
INSERT INTO mysql_genarate ( uuid ) VALUES( UUID( ) );
SET i = i + 1;
END WHILE;
END
調(diào)用測試call test_two1(), 測試10000條數(shù)據(jù)耗時幾分鐘，如果是千萬級數(shù)據(jù)，這個速度將無法忍受。
3、優(yōu)化存儲過程
使用批量插入的sql語句
CREATE DEFINER=`root`@`localhost` PROCEDURE `insertPro`( IN sum INT )
BEGIN
DECLARE count INT DEFAULT 0;
DECLARE i INT DEFAULT 0;
SET @exesql = concat( "insert into mysql_genarate(uuid) values" );
SET @exedata = "";
SET count = 0;
SET i = 0;
WHILE count sum DO
SET @exedata = concat( @exedata, ",(UUID())" );
SET count = count + 1;
SET i = i + 1;
IF i % 1000 = 0 THEN
SET @exedata = SUBSTRING( @exedata, 2 );
SET @exesql = concat( "insert into mysql_genarate(uuid) values ", @exedata );
PREPARE stmt FROM @exesql;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
SET @exedata = "";
END IF;
END WHILE;
IF length( @exedata ) > 0 THEN
SET @exedata = SUBSTRING( @exedata, 2 );
SET @exesql = concat( "insert into mysql_genarate(uuid) values ", @exedata );
PREPARE stmt FROM @exesql;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
END IF;
END
調(diào)用 call insertPro(10000) ，耗時零點幾秒，這個速度可以接受。
以上就是MySQL循環(huán)插入千萬級數(shù)據(jù)的詳細內(nèi)容，更多關于MySQL循環(huán)插入的資料請關注腳本之家其它相關文章！
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