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74 lines
2.1 KiB
Markdown
74 lines
2.1 KiB
Markdown
# PostgreSQL
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1. [TL;DR](#tldr)
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1. [Further readings](#further-readings)
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1. [Sources](#sources)
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## TL;DR
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```sh
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# Installation.
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brew install 'postgresql@14'
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sudo dnf install 'postgresql' 'postgresql-server'
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sudo zypper install 'postgresql15' 'postgresql15-server'
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```
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```sh
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# Connect to servers via CLI client.
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# If not given:
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# - the hostname defaults to 'localhost';
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# - the port defaults to '5432';
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# - the username defaults to the current user.
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psql 'my-db'
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psql 'my-db' 'user'
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psql 'postgresql://host:5433/my-db?sslmode=require'
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psql -U 'username' -d 'my-db' -h 'hostname' -p 'port' --password
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# List available databases.
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psql … --list
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# Execute commands.
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psql 'my-db' … -c 'select * from tableName;' -o 'out.file'
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psql 'my-db' … -c 'select * from tableName;' -H
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psql 'my-db' … -f 'commands.sql'
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# Initialize a test DB.
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pgbench -i 'test-db'
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pgbench -i 'test-db' -h 'hostname' -p '5555' -U 'user'
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# Create full backups of databases.
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pg_dump -U 'postgres' -d 'sales' -F 'custom' -f 'sales.bak'
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pg_dump … -T 'customers,orders' -t 'salespeople,performances'
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pg_dump … -s
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# Restore backups.
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pg_restore -U 'postgres' -d 'sales' 'sales.bak'
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```
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## Further readings
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- [Docker image]
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- [Bidirectional replication in PostgreSQL using pglogical]
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- [What is the pg_dump command for backing up a PostgreSQL database?]
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### Sources
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- [psql]
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- [pg_settings]
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- [Connect to a PostgreSQL database]
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<!--
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Reference
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═╬═Time══
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-->
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<!-- Upstream -->
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[docker image]: https://github.com/docker-library/docs/blob/master/postgres/README.md
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[psql]: https://www.postgresql.org/docs/current/app-psql.html
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[pg_settings]: https://www.postgresql.org/docs/current/view-pg-settings.html
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<!-- Others -->
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[connect to a postgresql database]: https://www.postgresqltutorial.com/connect-to-postgresql-database/
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[bidirectional replication in postgresql using pglogical]: https://www.jamesarmes.com/2023/03/bidirectional-replication-postgresql-pglogical.html
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[what is the pg_dump command for backing up a postgresql database?]: https://www.linkedin.com/advice/3/what-pgdump-command-backing-up-postgresql-ke2ef
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