今在專案中碰到了要把字串分割，記錄下來，以後可能還用的到

首先想上我的儲存過程程式碼

DELIMITER $$

USE `bplate`$$

DROP PROCEDURE IF EXISTS `lp_plate_insertplateinfo`$$

CREATE DEFINER=`root`@`localhost` PROCEDURE `lp_plate_insertplateinfo`(
	plate_user INT,
	plate_title VARCHAR(60) ,
	plate_type INT,
	plate_img VARCHAR(500),
	plate_content MEDIUMTEXT,
	plate_sku_name VARCHAR(60),
	plate_sku_price VARCHAR(60)
    )
BEGIN
	
	DECLARE i INT DEFAULT 0; 
	
	SET @sql1=CONCAT("INSERT INTO bp_plate(`plate_user`,`plate_title`,`plate_type`,`plate_img`,`plate_sales`,`plate_content`,`plate_level`,`plate_time`,`plate_state`) VALUE(",plate_user,",'",plate_title,"',",plate_type,",'",plate_img,"',",0,",'",plate_content,"',0,NOW(),1)");
	
	
	PREPARE sql1 FROM @sql1;
	EXECUTE sql1;
	
	
	
	SET @plate_id='';
	SELECT LAST_INSERT_ID() INTO @plate_id FROM bp_plate LIMIT 0,1;
	
	
	
	SET @arraylength=1+(LENGTH(plate_sku_name) - LENGTH(REPLACE(plate_sku_name,',','')));
	
	
	WHILE i<@arraylength
		DO
		SET i=i+1;
		SET @result = REVERSE(SUBSTRING_INDEX(REVERSE(SUBSTRING_INDEX(plate_sku_name,',',i)),',',1)); 
		SET @resultprice = REVERSE(SUBSTRING_INDEX(REVERSE(SUBSTRING_INDEX(plate_sku_price,',',i)),',',1));
		INSERT INTO bp_plate_sku(`plate_id`,`sku_name`,`sku_price`,`sku_time`,`sku_state`) VALUE(@plate_id,@result,@resultprice,NOW(),1);
	END WHILE;	
	
    END$$

DELIMITER ;
 

plate_sku_name VARCHAR(60),
plate_sku_price VARCHAR(60)

然後只要分割方法在於

SET @arraylength=1+(LENGTH(plate_sku_name) - LENGTH(REPLACE(plate_sku_name,',','')));
	
	
	WHILE i<@arraylength
		DO
		SET i=i+1;
		SET @result = REVERSE(SUBSTRING_INDEX(REVERSE(SUBSTRING_INDEX(plate_sku_name,',',i)),',',1)); 
		SET @resultprice = REVERSE(SUBSTRING_INDEX(REVERSE(SUBSTRING_INDEX(plate_sku_price,',',i)),',',1));
		INSERT INTO bp_plate_sku(`plate_id`,`sku_name`,`sku_price`,`sku_time`,`sku_state`) VALUE(@plate_id,@result,@resultprice,NOW(),1);
	END WHILE;	
 

之後便是一個while迴圈

中間用

 REVERSE(SUBSTRING_INDEX(REVERSE(SUBSTRING_INDEX(plate_sku_name,',',i)),',',1));

裡面的‘，’是根據要分割的字元，plate_sku_name是要分割的字串，變數i要從1開始

之後便能分割了