Re: How to generate file from postgres data

test=# create table t(id int, value text);

CREATE TABLE

test=# insert into t select x, x::text from generate_series(1, 1000) x;

INSERT 0 1000

test=#  COPY (select * from t where id < 50 order by id desc)  TO '/tmp/report.csv' DELIMITER ',' CSV HEADER;   ---- copy out the results via a view or sql directly

COPY 49

test=# \q

postgres@db:~/playground$ head -5 /tmp/report.csv

id,value

49,49

48,48

47,47

46,46