Importing zipped CSV file into PostgreSQL

Question

I have a big compressed csv file (25gb) and I want to import it into PostgreSQL 9.5 version. Is there any fast way to import zip or qzip file into postgres without extractin

Answer 1

example how to do it with zcat and pipe:

-bash-4.2$ psql -p 5555 t -c "copy tp to '/tmp/tp.csv';"
COPY 1
-bash-4.2$ gzip /tmp/tp.csv
-bash-4.2$ zcat /tmp/tp.csv.gz | psql -p 5555 t -c "copy tp from stdin;"
COPY 1
-bash-4.2$ psql -p 5555 t -c "select count(*) from tp"
 count
-------
     2
(1 row)

also from 9.3 release you can:

psql -p 5555 t -c "copy tp from program 'zcat /tmp/tp.csv.gz';"

without pipe at all