Posted by Hugo Kornelis on 01/12/06 00:15

On 11 Jan 2006 13:14:43 -0800, 2redline@gmail.com wrote:

>I am trying to write a query in access that will pull results that are
>in the database in a text field and convert to where I can get a
>average including decimals. Any Ideas?
>
>
>-----------------------Start SQL--------------------------------------
>SELECT AVG(CAST(dbo_sur_response_answer.answer_text AS int)) AS
>avg_correct
>FROM (dbo_sur_response_answer
>INNER JOIN dbo_sur_subitem
>ON dbo_sur_response_answer.subitem_id = dbo_sur_subitem.subitem_id)
>INNER JOIN dbo_sur_response
>ON dbo_sur_response_answer.response_id = dbo_sur_response.response_id
>WHERE (((dbo_sur_response.completed_yn)="Y") AND
>((dbo_sur_subitem.subitem_id)=478));
>-----------------------End SQL--------------------------------------

Hi 2redline,

I doon't know much about Access, but the following should work in SQL
Server. (I assume that using SQL Server is an option, since you
crossposted this to a SQL Server group).

SELECT AVG(CAST(ra.answer_text AS decimal(5,2))) AS avg_correct
FROM dbo.sur_response_answer AS ra
INNER JOIN dbo.sur_subitem AS si
ON si.subitem_id = ra.subitem_id
INNER JOIN dbo.sur_response AS r
ON r.response_id = ra.response_id
WHERE r.completed_yn = 'Y'
AND sit.subitem_id = 478;

I introduced aliasses and changed spacing to make the query more
readable, changed the Access double quotes to standard SQL single quotes
and removed all the unneeded parenthese. The only actual change I made
was CASTing to decimal(5,2) instead of CASTint to int. The average of a
bunch of integers will be integer as well; if you want a result with
decimals, you'll have to use a datatype with decimals (such as
decimal(5,2), which specifies 3 digits to the left and 2 to the right of
the decimal point).


--
Hugo Kornelis, SQL Server MVP

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