using query find the average in sql server

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using query i get the below output as follows

Rate Bfid

1 72
2 72
3 72
4 72

From the above output i want the output as follows

Rate Bfid

2.5 72

adding the Rate values 1+2+3+4 = 10 divide bu number of 72's .

so in rate i get the 2.5

from using sql query how can i get the below output.

please help me.

Rgds,
Narasiman P.

Posted 17-May-13 22:59pm

Member 8054539

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Enver Maroshi · Answer 1 · 2013-05-17T23:04:00

SQL

SELECT AVG(Rate), Bfid FROM tablename  GROUP BY Bfid

Edit: in case Rate is int, and not decimal, you will have to cast all values to decimal first, in order to be able to return decimal value. Like bellow:

SQL

CREATE TABLE #Test (Rate int, Bfid int)

INSERT INTO #Test (Rate, Bfid) VALUES (1, 72)
INSERT INTO #Test (Rate, Bfid) VALUES (2, 72)
INSERT INTO #Test (Rate, Bfid) VALUES (3, 72)
INSERT INTO #Test (Rate, Bfid) VALUES (4, 72)

SELECT AVG(CAST(Rate as decimal)), Bfid
FROM #Test
GROUP BY Bfid
ORDER BY Bfid

DROP TABLE #Test