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Need help getting totals by ZipCode


Need help getting totals by ZipCode

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andy 56206
andy 56206
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Group: General Forum Members
Points: 9 Visits: 35
Hi all,
I am trying to get grand total, totals of each ethnicity and percentage of each ethnicity by zipcode.
I can get the total number by zipcode without adding the ethnicity portion to the query by using:

SELECT Count(ChildPartyID), ResidencyZip
FROM CaseChild
Where programID = x

But I need to be able to display the toal number per zip AND further break down the data by ethnicity.

I am using the following code:

SELECT cc.ResidencyZip as ZIP, e.EthnicityDesc,
Count(e.EthnicityDesc) as 'Record Count',
Convert(decimal(18,2),1.0 * COUNT(e.EthnicityDesc)/COUNT(cc.ChildPartyID) * 100) AS 'Percentage'
FROM CaseChild cc JOIN
Party p on cc.childPartyID = p.partyID JOIN
Ethnicity e on p.EthnicityID = e.EthnicityID

WHERE (cc.programID = 6)
GROUP BY cc.ResidencyZip,e.ethnicityDesc
ORDER BY cc.ResidencyZip

I ge the proper totals per ethnicitydesc but all the percentages are 100% and the Count(cc.ChildPartyID) is now Equal to
Count(e.EthnicityDesc)
I am new at this so any help is greatly appreciated.
Thanks
Andy
Lowell
Lowell
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Group: General Forum Members
Points: 27978 Visits: 39922
you can use a technique using SUM(CASE... to get subtotasl;
you'll have to construct the multiple case statements to match your descriptions, i think.

here's a prototype based on the query you posted.

SELECT
cc.ResidencyZip AS ZIP,
COUNT(e.EthnicityDesc) AS 'Record Count',
SUM(CASE WHEN e.EthnicityDesc = 'White' THEN 1 ELSE 0 END) AS BENCOUNT1,
SUM(CASE WHEN e.EthnicityDesc = 'Black' THEN 1 ELSE 0 END) AS BENCOUNT2,
SUM(CASE WHEN e.EthnicityDesc = 'Asian' THEN 1 ELSE 0 END) AS BENCOUNT3,
CONVERT(DECIMAL(18,2),1.0 * COUNT(e.EthnicityDesc)/COUNT(cc.ChildPartyID) * 100) AS 'Percentage'
FROM CaseChild cc
INNER JOIN Party p
ON cc.childPartyID = p.partyID
INNER JOIN Ethnicity e
ON p.EthnicityID = e.EthnicityID
WHERE (cc.programID = 6)
GROUP BY cc.ResidencyZip
ORDER BY cc.ResidencyZip



Lowell

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Chris Harshman
Chris Harshman
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Group: General Forum Members
Points: 4816 Visits: 3942
andy 56206 (12/5/2012)
..I am using the following code:

SELECT cc.ResidencyZip as ZIP, e.EthnicityDesc,
Count(e.EthnicityDesc) as 'Record Count',
Convert(decimal(18,2),1.0 * COUNT(e.EthnicityDesc)/COUNT(cc.ChildPartyID) * 100) AS 'Percentage'
FROM CaseChild cc JOIN
Party p on cc.childPartyID = p.partyID JOIN
Ethnicity e on p.EthnicityID = e.EthnicityID

WHERE (cc.programID = 6)
GROUP BY cc.ResidencyZip,e.ethnicityDesc
ORDER BY cc.ResidencyZip

I ge the proper totals per ethnicitydesc but all the percentages are 100% and the Count(cc.ChildPartyID) is now Equal to
Count(e.EthnicityDesc)


the COUNT function simply counts all the rows per grouping based on your GROUP BY clause, not based on values of specific columns. If you want to calculate percents, you'd probably want to use COUNT with an OVER clause such as:
SELECT cc.ResidencyZip as ZIP, e.EthnicityDesc,
Count(*) as record_count,
Convert(decimal(18,2),100.0 * COUNT(*) / COUNT(*) OVER (PARTITION BY ResidencyZip)) AS ethnicity_percent
FROM CaseChild cc
JOIN Party p on cc.childPartyID = p.partyID
JOIN Ethnicity e on p.EthnicityID = e.EthnicityID
WHERE (cc.programID = 6)
GROUP BY cc.ResidencyZip, e.ethnicityDesc
ORDER BY cc.ResidencyZip



http://msdn.microsoft.com/en-us/library/ms189461(v=sql.100).aspx
andy 56206
andy 56206
Forum Newbie
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Group: General Forum Members
Points: 9 Visits: 35
This is why I hesitate to post to this forum. I always seem to run into people like you.
It was a simple question and if you do not have an answer why post!
sanket kokane
sanket kokane
SSC-Addicted
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Group: General Forum Members
Points: 475 Visits: 1022
please don't stop posting your questions..
Just follow some rules ..People are happy to help you here
Don't take anything Personally :-)

-----------------------------------------------------------------------------
संकेत कोकणे
Eugene Elutin
Eugene Elutin
SSCarpal Tunnel
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Group: General Forum Members
Points: 4960 Visits: 5478
sanket kokane (12/10/2012)
please don't stop posting your questions..
Just follow some rules ..People are happy to help you here
Don't take anything Personally :-)


Especially such default rude and non-constructive answers from J.CELKO.
I think he has a template somewhere...

Saying that, you will definitely benefit from posting your question in line with forum etiquette as described in an article - link at the bottom of my signature;-)

_____________________________________________
"The only true wisdom is in knowing you know nothing"
"O skol'ko nam otkrytiy chudnyh prevnosit microsofta duh!":-D
(So many miracle inventions provided by MS to us...)

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