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115 lines
2.3 KiB
115 lines
2.3 KiB
2 years ago
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# PostgreSQL
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Summary: Work with Postgres databases.
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## Common Options
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- `host` (str): The host name. Default: `localhost`
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- `password` (str): The password of the user executing the command.
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- `port` (int): The TCP port. Default: `5432`
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- `user` (str): The username of the user executing the command. Default: `postgres`
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## Automatic Conversion of Postgres Command Switches
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Options provided in the steps file are automatically converted to command line switches. For example:
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```ini
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[create a soft backup of the database schema]
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pgsql.dump: example_app
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schema_only: yes
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path: /tmp/example_app.sql
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```
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`schema_only` becomes "--schema-only".
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## Available Commands
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### pgsql.create
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Create a database. Argument is the database name.
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- `owner` (str): The username that owns the database.
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```ini
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[create the database]
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pgsql.create: database_name
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```
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### pgsql.drop
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Drop a database. Argument is the database name.
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```ini
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[drop the testing database]
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pgsql.drop: testing_example_app
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```
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### pgsql.dump
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Dump the database schema. Argument is the database name.
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- `path` (str): The path to the dump file. Default: `database_name.sql`
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```ini
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[create a soft backup of the database]
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pgsql.dump: example_app
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column_inserts: yes
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path: /tmp/example_app.sql
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```
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### pgsql.exists
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Determine if a database exists. Argument is the database name.
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```ini
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[determine if the database exists]
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pgsql.exists: example_app
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```
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### pgsql.grant
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Grant privileges to a user. Argument is the username. Database option is required.
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- `database` (str): The name of the database where the target object exists.
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- `privileges` (str): The privileges to be granted. Default `ALL` (see [Postgres docs](https://www.postgresql.org/docs/current/sql-grant.html))
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- `schema` (str): The schema name to which the privileges apply.
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- `table` (str): The table name to which privileges apply.
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!!! note
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A schema name or table name is required.
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```ini
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[grant select access to bob]
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pgsql.grant: bob
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database: example_app
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privileges: select
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schema: public
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```
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### pgsql.user
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Create a user. Argument is the user name.
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- `password` (str): The user's password.
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```ini
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[create a database user]
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pgsql.user: username
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```
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Remove a user.
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```ini
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[remove a database user]
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pgsql.user: username
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op: remove
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```
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Determine if a user exists.
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```ini
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[determine if database user exists]
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pgsql.user: username
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op: exists
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```
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