SQL語法問題

Question

我不能爲我的生活弄清楚什麼不對的SQL語句

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

什麼想法？

問候， 拜倫科布。

Answer 1

您需要別名派生表

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