tldr/pages/common/psql.md
2016-08-08 08:48:21 +01:00

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# psql
> PostgreSQL command-line client.
- 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}}`