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(at)db:~/playground$ head -5 /tmp/report.csv
id,value
49,49
48,48
47,47
46,46
and send the csv tar zip compressed etc.
How does your client intend to load 1gb report in a viewer ? paginated ?
all at once ?