tldr/pages/common/psql.md

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psql

PostgreSQL command-line client. More information: https://www.postgresql.org/docs/current/app-psql.html.

  • Connect to database. It connects to localhost using default port 5432 with default user as currently logged in user:

psql {{database}}

  • Connect to database on given server host running on given port with given username, without a password prompt:

psql -h {{host}} -p {{port}} -U {{username}} {{database}}

  • Connect to database; user will be prompted for password:

psql -h {{host}} -p {{port}} -U {{username}} -W {{database}}

  • Execute a single SQL query or PostgreSQL command on the given database (useful in shell scripts):

psql -c '{{query}}' {{database}}

  • Execute commands from a file on the given database:

psql {{database}} -f {{file.sql}}