oracle rownum transfer to t-sql row_number() over with error

Question

简化的原点pl_sql是

select t.*, staff_no||'-'||rownum as pk 
from (select * from hrmmgr.posting where type not in ('X','C') order by staff_no, postingdate) t;

我尝试在 sql 服务器中将其重写为运行作为

select t.*, staff_no + '-' + t.rownum as pk
from (select row_number() over (order by staff_no, postingdate) as rownum, * 
from posting where type not in ('X','C') order by staff_no, postingdate) t

但是错误

The ORDER BY clause is invalid in views, inline functions, derived tables, subqueries, and common table expressions, unless TOP, OFFSET or FOR XML is also specified.

返回。

如果我尝试添加 OFFSET，如下错误消息所示：

select t.*, staff_no + '-' + t.rownum as pk
from (select row_number() over (order by staff_no, postingdate OFFSET 0 ROWS) as rownum, * 
from posting where type not in ('X','C') order by staff_no, postingdate) t

然后出现如下错误。

Incorrect syntax near 'ROWS'.

那么如何在 sql 服务器中将我的 plsql 重写为运行？

Answer 1

子查询中的 ORDER BY 子句似乎是问题所在，SQL 服务器告诉您 ORDER BY 不能出现在子查询中，除非同时使用 [=13] =].但是，这里甚至不需要，因为您对 ROW_NUMBER 的调用已经指定了在分配行号时要使用的 ORDER BY 子句。试试这个版本：

SELECT t.*, staff_no + '-' + t.rownum AS pk
FROM
(
    SELECT ROW_NUMBER() OVER (ORDER BY staff_no, postingdate) AS rownum, * 
    FROM posting
    WHERE type NOT IN ('X', 'C')
) t;

oracle rownum transfer to t-sql row_number() over with error

oracle rownum transfer to t-sql row_number() over with error

tsql

plsql

rownum