How do you print the result of a PostgreSQL query in CSV or TSV format from the command line?

Question

I\'d like to execute a query from the shell (not in the interactive psql client) and have it print the CSV or TSV representation of the output to STDOUT. How do you do that with

Answer 1

Also possible is the copy command which allows you to specify header, delimiters and quoting options

psql my_database -U my_user -c "copy (select a.id,b.id from my_table_a as a inner join my_table_b as b on b.id = a.id) to STDOUT"