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October 19, 2015 22:56
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Finds donors who have contributed to multiple 2016 campaigns.
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ALTER TABLE contributions_individual ADD COLUMN contbr_nm_short varchar(200); | |
UPDATE contributions_individual set contbr_nm_short = SUBSTRING_INDEX(contributions_individual.contbr_nm, ' ', 2); | |
SELECT contributions_individual.cand_nm, | |
contributions_individual.contbr_nm_short, | |
contributions_individual.contbr_zip, | |
SUM(contributions_individual.contb_receipt_amt) as total, | |
b.cand_nm, | |
b.contbr_nm_short, | |
b.contbr_zip, | |
b.total | |
FROM contributions_individual | |
JOIN ( | |
SELECT cand_nm, | |
contbr_nm_short, | |
contbr_zip, | |
SUM(contb_receipt_amt) as total | |
FROM contributions_individual | |
GROUP BY cand_nm, contbr_nm, contbr_zip | |
) as b | |
ON contributions_individual.contbr_nm_short = b.contbr_nm_short | |
AND LEFT(contributions_individual.contbr_zip, 5) = LEFT(b.contbr_zip, 5) | |
AND contributions_individual.cand_nm != b.cand_nm | |
GROUP BY contributions_individual.cand_nm, contributions_individual.contbr_nm, contributions_individual.contbr_zip; |
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Added an
ALTER TABLE
to add a condensed contributor name to the basic file, allowing better joins between candidates (who do annoying stuff to names, like add "Mr." sometimes).