MySQL 根据字段中的逗号分隔成多条数据

it2023-06-21  71

将数据库表的字段进行切割,分成多条数据。

表数据:

test表

期望得到的查询结果为:

id                  name

1                   张三

1                   李四

1                   王五

2                   肖1

2                   肖2

sql语句:

select a.id,substring_index(substring_index(a.name,',',b.help_topic_id+1),',',-1) name  from test a join mysql.help_topic b on b.help_topic_id < (length(a.name) - length(replace(a.name,',',''))+1) order by a.id;

感谢原文作者,本文转自https://blog.csdn.net/qq_34542964/article/details/72821764

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