Select statement always execute/select columns in order?

Posted by Aseem Gautam on Stack Overflow See other posts from Stack Overflow or by Aseem Gautam
Published on 2010-05-20T09:27:07Z Indexed on 2010/05/20 9:40 UTC
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sql-server

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tsql

Does all the columns in select statement gets selected one after another as listed?

Declare @X, @Y

    SELECT 
    @X = ColumnA*.25 + ColumnB*2.5,
    @Y = ColumnA*.5 + ColumnC*1.33,
    TOTAL = @X + @Y
    FROM SomeTable

Is the above query safe to use? Will total always be selected after @X and @Y are calculated?

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