【轉】mysql用sql實現split函數

關鍵詞：mysql split

mysql根據逗號將一行數據拆分成多行數據
1、原始數據演示

 

2、處理結果演示

 

3、sql語句

SELECT a.id
    , a.NAME
    , substring_index(substring_index(a.shareholder, ',', b.help_topic_id + 1), ',', - 1) AS shareholder

FROM company a

INNER JOIN mysql.help_topic b
    ON b.help_topic_id < (length(a.shareholder) - length(REPLACE(a.shareholder, ',', '')) + 1)

4、附錄
基本表建立語句

CREATE TABLE `company` (
`id` int(20) DEFAULT NULL,
`name` varchar(100) DEFAULT NULL,
`shareholder` varchar(100) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
INSERT INTO `company` VALUES ('1', '阿里巴巴', '馬雲');
INSERT INTO `company` VALUES ('2', '淘寶', '馬雲,孫正義');

原文：https://blog.csdn.net/WY18334783911/article/details/83379450