1、将查询结果中有用的数据用分隔符获取,更新到另一张表。
DELIMITER $$ DROP FUNCTION IF EXISTS `func_splitString` $$ CREATE FUNCTION `func_splitString` ( f_string VARCHAR(1000),f_delimiter VARCHAR(5),f_order INT) RETURNS VARCHAR(255) CHARSET utf8 BEGIN DECLARE result VARCHAR(255) DEFAULT ‘‘; SET result = REVERSE(SUBSTRING_INDEX(REVERSE(SUBSTRING_INDEX(f_string,f_delimiter,f_order)),f_delimiter,1)); RETURN result; END$$ //更新表字段3min_document:cover_id int //查询表字段3min_document_video:video string (内容类似:xxxxxxx|12) UPDATE 3min_document d INNER JOIN 3min_document_video v ON d.id=v.id SET d.cover_id=func_splitString(v.video,‘|‘,2);
时间: 2024-10-25 00:59:04