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Message Posted: Wed, 07 Nov 2007 @ 19:32:42 GMT


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Subj:		Re: Calculate Percentages for a column

From:		Dieter Noeth

Oscar Valles wrote:

          > SELECT A1.OFFICE, SUM(A1.HOURS) AS HOURS, (SUM(A1.HOURS) / (SELECT
          > SUM(A2.HOURS) FROM TABLE AS A2)) AS HRSPCT
          > >FROM TABLE AS A1
          > WHERE A1.OFFICE LIKE 'AD%'
          > GROUP BY A1.OFFICE;

When I execute this query it tells me that I am missing something by the '(' and the 'SELECT' statement. I am fairly new to Teradata and SQL so any response is greatly appreciated.

Teradata SQL stil not supports Scalar Subqueries (= Select within the column list), you usually have to rewrite it using Outer Joins or OLAP functions:

In your case it's:

     SELECT A1.OFFICE, SUM(A1.HOURS) AS HOURS,
     SUM(A1.HOURS) / sumHours AS HRSPCT
     FROM TABLE AS A1,
     (SELECT SUM(A2.HOURS) as sumHours FROM TABLE AS A2)
     WHERE A1.OFFICE LIKE 'AD%'
     GROUP BY A1.OFFICE;

     SELECT A1.OFFICE, SUM(A1.HOURS) AS HOURS,
     SUM(A1.HOURS) / (SUM(SUM(A1.HOURS)) over ()) AS HRSPCT
     FROM TABLE AS A1
     GROUP BY A1.OFFICE
     qualify A1.OFFICE LIKE 'AD%'
     ;

Dieter


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