SQL Server：从结果集ID生成WHERE子句？

我有一个查询，它会生成以下结果集：

ID (text)    VAL
 1           A
 2           B
 3           C

我要从结果集ID生成WHERE子句：

where id in ('1','2','3')

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使用Oracle，我可以使用以下查询来生成WHERE子句：

with a as (

  <my_query>

)
select 'where id in ('
  || listagg(id, ',') within group(order by id)
  || ')' as where_clause
from a

有没有办法使用SQL Server做同样的事情？

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相关：Oracle: Generate WHERE clause from resultset ids?

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解决方案

试试这个。

with a as (

  <my_query>

)
SELECT 'WHERE id IN (' +
  STRING_AGG(id, ',') WITHIN GROUP(ORDER BY id) 
  + ')' as where_clause
FROM a

然后您将得到WHERE id IN (1,2,3)

如果要获取WHERE id IN ('1','2','3') 然后您可以像下面这样更改

SELECT 'WHERE id IN (''' +
      STRING_AGG(id, ''',''') WITHIN GROUP(ORDER BY id) 
      + ''')' as where_clause
FROM a