I just found out that datestyle affects the output of COPY, and hence
pg_dump:
test=> create table test(x date);
CREATE
test=> insert into test values ('2001-07-31');
INSERT 17239 1
test=> set datestyle to 'postgres, dmy';
SET
test=> copy test to '/tmp/x';
COPY
test=> \!cat /tmp/x
31-07-2001
test=> set datestyle to 'postgres, mdy';
SET
test=> copy test to '/tmp/x';
COPY
test=> \!cat /tmp/x
07-31-2001
Should we set the datestyle at the top of pg_dump files like we do with
encoding and other settings? Seems we should.
--
Bruce Momjian | http://candle.pha.pa.us
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