On 6 September 2011 19:00, Gauthier, Dave <dave.gauthier@xxxxxxxxx> wrote:
The identification and deleting of the records using ctids seems to have worked fine.
Thanks !
Alternative you could do something like this:
WITH keep AS (
SELECT
my_table AS duplicate_row,
min(ctid) AS keep,
count(*)
FROM my_table
GROUP BY my_table
HAVING count(*) > 1
)
DELETE FROM my_table
USING keep
WHERE
my_table = keep.duplicate_row
AND
my_table.ctid != keep
RETURNING my_table.ctid, my_table.*;
This would delete all duplicate rows from the table and just keep whichever row appears first in the table before its duplicates.
Thom Brown
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