SQL 在第一列 OpenQuery 上不同
SQL Distinct on First Column OpenQuery
我在 SQL Server 2014 中使用 OpenQuery
从 Progress 中检索数据。
这是我的查询:
SELECT *
FROM OPENQUERY(PRG, 'SELECT "cde","dsc" FROM tblCodes')
它会像这样检索数据:
cde dsc
=== =====
one test
one another
one value
two goes
two here
two also
three example
但是,我需要的结果如下所示:
cde dsc
=== =====
one test
two goes
three example
如何在 OpenQuery
中执行此操作?
在您打开的查询中,您的查询应该如下所示,我建议您将 cde 列作为数字 ID:
WITH CTE AS (select cde,dsc,
row_number() over(
partition by cde
order by cde
) as rn
from tblCodes
)
select cde,dsc from CTE
where rn =1
在此处检查执行情况:sqlfiddle
我在 SQL Server 2014 中使用 OpenQuery
从 Progress 中检索数据。
这是我的查询:
SELECT *
FROM OPENQUERY(PRG, 'SELECT "cde","dsc" FROM tblCodes')
它会像这样检索数据:
cde dsc
=== =====
one test
one another
one value
two goes
two here
two also
three example
但是,我需要的结果如下所示:
cde dsc
=== =====
one test
two goes
three example
如何在 OpenQuery
中执行此操作?
在您打开的查询中,您的查询应该如下所示,我建议您将 cde 列作为数字 ID:
WITH CTE AS (select cde,dsc,
row_number() over(
partition by cde
order by cde
) as rn
from tblCodes
)
select cde,dsc from CTE
where rn =1
在此处检查执行情况:sqlfiddle