Kent Anderson wrote:
I have a few tables that have duplicated values from an import from a different database. I have two keys I tried to set as primary and got an error
ERROR: could not create unique index
DETAIL: Table contains duplicated values.
Is there some join I can use to compare the hmhmkey, wmwmkey pairs against the table to find duplicate values? Each pair key should be unique but the old database was less than normalized.
I was trying to use the code below but it returned no rows.
SELECT hmhmkey, wmwmkey
FROM exceptions
EXCEPT
SELECT hmhmkey, wmwmkey
FROM exceptions;
Any suggestions?
Kent Anderson
EZYield.com
407-629-0900
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This might do it...
If you do this on the table that had duplicates you wont need to join
select count(hmhmkey),count(wmwmkey) from
exceptions group by hmhmkey,wmwmkey having count(hmhmkey) >1 or having count(wmwmkey) >1;