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→Joining portco with ipo and mas
--44774
\COPY portcoipojoinmajoin TO 'portcoipojoinmajoin.txt' WITH DELIMITER AS E'\t' HEADER NULL AS '' CSV
For mas you will need to join to the masnodupes table because you will want acquiror name and transaction amount. The matcher file only contains the key without the extra information.
DROP TABLE portcomajoinmasnodupes;
CREATE TABLE portcomajoinmasnodupes AS
SELECT portcomajoin.*, masnodupes.*
FROM portcomajoin LEFT JOIN masnodupes ON masnodupes.targetname = portcomajoin.file2targetname AND
masnodupes.targetstatecode = portcomajoin.statecode AND masnodupes.announceddate = portcomajoin.file2announceddate;
--44755
Then join with the portco table again and extract out the city and address.
