在SQL中联接别名和位置

Question

I am trying to run a query where i can use an alias in where clause

For example:

Select V.Fees - Coalesce(V.Payment,0) - Coalesce (V.Adjustment,0) AS Balance
[
the inner join query for the tables
]
Where A.Order not Null and Balance = 0
Order by Name

but as usual it is not able to recognize Balance under where?

How can we fix this?

Answer 1

执行您要问的唯一方法是将该字段放在CTE中，并通过CTE的联接对其进行引用。

Answer 2

you can repeat the expression in the where clause

Select V.Fees - Coalesce(V.Payment,0) - Coalesce (V.Adjustment,0) AS Balance
[
the inner join query for the tables
]
Where A.Order not Null and (V.Fees - Coalesce(V.Payment,0) - Coalesce (V.Adjustment,0)) = 0
Order by Name