Export to CSV and Compress with GZIP in postgres

Question

I need to export a big table to csv file and compress it.

I can export it using COPY command from postgres like -

COPY foo_table to \'/tmp/foo_table.csv

Answer 1

The trick is to make COPY send its output to stdout, then pipe the output through gzip:

psql -c "COPY foo_table TO stdout DELIMITER ',' CSV HEADER" \
    | gzip > foo_table.csv.gz