SQL Server : column alias accessing -

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I have a question that looks like this: choose 

  (numberLateOrders / numberOf Order) percent

Now I wanted to be able to add a where section and reach the column nickname percentFailed though it seems the nickname The query is not being recognized until it is completed. Is this true and / or has any work for it?

Thank you!

to add to existing replies

or Select it with a sub-query 

  Select percentage (select number wave-rollers / number of orders), fail with percentage orders) where the percentage is & gt; 0

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