sql-server - 窗口函数的参数应该是分区常量？

Question

下面的SQL

with t as (
    select Id
    from IA
    INNER JOIN IAD ON IAD.PKEY = IA.DID
    LEFT JOIN  IAC ON IAC.INS = IA.INS
)
select Id,
       ntile((select count(*) from t) / 5000) over ( order by Id ) NT
from t;

在Oracle中运行时出现以下错误。

ORA-30488: argument should be a function of expressions in PARTITION BY
30488. 00000 -  "argument should be a function of expressions in PARTITION BY"
*Cause:    The argument of the window function should be a constant for
           a partition.
*Action:
Error at Line: 66 Column: 20

How to assign the parameter of NTile with computed value? I will need the code be able to be run in SQL Server via linked server.

-- SQL Server
select * from openquery(oracledb, '....the code above...')

Answer 1

函数中对“参数应该是 PARTITION BY 中表达式的函数”的要求有点奇怪。 类似这样的事情:

with t as (
     select Id, 
            trunc ( count(*) over ()  / 500) as cnt
       from IA
      INNER JOIN IAD ON IAD.PKEY = IA.DID
       LEFT JOIN IAC ON IAC.INS = IA.INS
 )
 select Id,
        ntile(cnt ) over (partition by cnt order by Id ) NT
 from t;