psql

PostgreSQL command-line client.

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

psql {database}

• Connect to the 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 the 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}

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