On 02/04/2013 06:45 AM, Alexander Farber wrote:
Trying to delete the older of the duplicated pairs:
# SELECT id, author, count(1), max(stamp) as maxx
FROM pref_rep
GROUP BY id, author
HAVING count(1) >1 and stamp < maxx;
ERROR: column "maxx" does not exist
LINE 4: HAVING count(1) >1 and stamp < maxx;
How about:
SELECT id, author, count(1), max(stamp) as maxx
FROM pref_rep
GROUP BY id, author
HAVING count(1) >1 and stamp < max(stamp);
^
On Mon, Feb 4, 2013 at 3:36 PM, Alexander Farber
<[email protected]> wrote:
http://stackoverflow.com/questions/14688523/adding-primary-key-table-contains-duplicated-values
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Adrian Klaver
[email protected]
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