SQL Syntax Issues

I can't for the life of me figure out what's wrong with this sql statement

select top(1) 
  OrderNumber 
 from (select top(5) 
         OrderNumb开发者_运维百科er 
       from SomeTable
       where TreePath='tests' 
       order by OrderNumber asc) 

Any Ideas?

Regards, Byron Cobb.

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You need to alias the derived table

select top 1 
  myDerivedTable.OrderNumber 
 from (select top 5 
         OrderNumber 
       from TABLE 
       where TreePath='tests' 
       order by OrderNumber asc) myDerivedTable
order by myDerivedTable.OrderNumber