SQL Query with computed column

Posted by plotnick on Stack Overflow See other posts from Stack Overflow or by plotnick
Published on 2010-05-17T19:32:01Z Indexed on 2010/05/17 19:40 UTC
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tsql

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sql

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query

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homework

help me please with a query. Assume that we have a table with columns:

Transaction
StartTime
EndTime

Now, I need a query with computed column of (value = EndTime-Startime). Actually I need to group Users(Transaction has a FK for Users) and sort them by average time spent for transaction.

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