Copying Postgres output into a spreadsheet

I often need to grab information from a Postgres database and paste it into a spreadsheet for sharing with others. Google Sheets needs the pasted data to be tab-separated in order to be correctly split into columns. This isn't the default behaviour for psql but here's how to configure psql's output to get it.

At a psql prompt, switch to unaligned output

=> \a

and set the field separator to a tab character:

=> \f '\t'

then the output from subsequent SELECT ... statements can be cleanly pasted into your Google Doc.