sql 2000 is'not executing the query that 2008 can execute

Question

If I execute the following SQL statement in SQL server 2008 it works perfectly, but when execute the same statement in SQL Server 2000 it doesn't work:

Statement:

select top 1  
  [k].[FixbiUnitPrice] 
from  (
  select top (select COUNT(*) 
              from [dbo].[mnrFnBI_Fixed]('4E591E71-33BD-4ECC-8703-771BE8A76817') f) 
    [FixbiUnitPrice],
    BDate,
    biNumber 
  From [dbo].[mnrFnBI_Fixed]('4E591E71-33BD-4ECC-8703-771BE8A76817') f  
  where f.BAccCustID != 0x0 
  order by f.BDate desc,f.BNumber desc,f.biNumber desc
) [k]

Output in SQL Server 2000:

Server: Msg 170, Level 15, State 1, Line 1
Line 1: Incorrect syntax near '('.
Server: Msg 170, Level 15, State 1, Line 1
Line 1: Incorrect syntax near 'FixbiUnitPrice'.

What's wrong with syntax for SQL Server 2000

Answer 1

Support for 'dynamic' top in sql server started in 2005 version. for sql server 2000 you can only use a constant number after top . you can probably use SET ROWCOUNT for your query.

Also, Read this post and it's answers.

Answer 2

In addition to @Zohar's point that a variable TOP @N isn't supported in Sql 2000, what you could also do is generate Dynamic Sql and then execute it, ie:

DECLARE @TopCount INT
DECLARE @Sql NVARCHAR(2000)

SELECT @TopCount = COUNT(*) 
FROM [dbo].[mnrFnBI_Fixed]('4E591E71-33BD-4ECC-8703-771BE8A76817')

SET @Sql = 
'select top 1 
  [k].[FixbiUnitPrice] 
from  (
  select top ' + CONVERT(NVARCHAR(50), @TopCount) + '
    [FixbiUnitPrice],
    BDate,
    biNumber 
  From [dbo].[mnrFnBI_Fixed](''4E591E71-33BD-4ECC-8703-771BE8A76817'') f  
  where f.BAccCustID != 0x0 
  order by f.BDate desc,f.BNumber desc,f.biNumber desc
) [k]'

EXEC sp_executesql @Sql

That said, Sql 2000 is really an unsupported, legacy technology and you need to consider upgrading to a more recent version of Sql Server as soon as possible.