sqlserver 合并列数据的实现_Sql Server

sqlserver 合并列数据的实现

2023-03-27 15:25我是个假程序员 Sql Server

本文主要介绍了sqlserver 合并列数据的实现，文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值，需要的朋友们下面随着小编来一起学习学习吧

sql server 递归查询树型结构某节点的所有上级节点，并且把这些所有上级节点多行拼接为一行，即合并列数据

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									with eps_root(pk_eps, pk_parent, eps_code, eps_name) as

									(

									    SELECT

									         pk_eps, pk_parent, eps_code, eps_name

									     FROM pm_eps

									     where enablestate = 2

									       and pk_eps = '1001A11000000003P62E'

									    union all

									    SELECT

									        e.pk_eps, e.pk_parent, e.eps_code, e.eps_name

									    FROM pm_eps e

									          inner join eps_root r on e.pk_eps = r.pk_parent

									    where e.enablestate = 2

									)

									select distinct

									    eps_code = stuff((select '/' + convert(nvarchar(500), eps_code) from (select distinct eps_code from eps_root) r1 for xml path('')), 1, 1, ''),

									    --此次需要使用eps_code排序，不然中文的会错乱顺序

									    eps_name = stuff((select '/' + eps_name from (select top 99.99 PERCENT eps_name from eps_root order by eps_code) r2 for xml path('')), 1, 1, '')

									from eps_root