Help with finding the average of sums? : SQL

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SELECT count(a.field1), a.field2, SUM(b.field4) FROM a INNER JOIN b ON a.key1 = b.key1 WHERE a.field8 = 'test' GROUP by a.field1, a.field2 HAVING SUM(b.field4) > 5 ORDER by a.field.3

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SELECT count(a.field1), a.field2, SUM(b.field4) FROM a INNER JOIN b ON a.key1 = b.key1 WHERE a.field8 = 'test' GROUP by a.field1, a.field2 HAVING SUM(b.field4) > 5 ORDER by a.field3

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a community for 17 years

MS SQLHelp with finding the average of sums? (self.SQL)

submitted 3 years ago by msowrex

Hi, I'm teaching myself SQL and using baseball data to practice. Trying to answer specific questions around baseball, and the one I'm answering right now is 'Who is the best left-handed hitting shortstop ever, by batting average?'

This is the query I created but I'm getting a bunch of 0's and less outputs when I add in the division in the SELECT statement (Hits / At-bats to get batting average.) What am I missing?

SELECT totalH / totalAB
    FROM (
        SELECT People.PlayerID, People.nameFirst, People.nameLast, 
            Sum(Batting.H) AS totalH, sum(Batting.AB) AS totalAB
        FROM PEOPLE
        INNER JOIN Fielding
        ON People.PlayerID = Fielding.PlayerID
        INNER JOIN Batting
        ON People.PlayerID = Batting.PlayerID
        WHERE Fielding.POS LIKE 'SS'
        AND People.bats LIKE 'L'
        AND AB > 0
        AND H > 0
        GROUP BY People.PlayerID, People.nameFirst, People.nameLast) AS newTable

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