Pg_catalog | pg_type | pasha | | t | f | f | f Pg_catalog | pg_statistic | pasha | | t | f | f | f Timetable | chain_log | scheduler | | t | f | f | f Schemaname | tablename | tableowner | tablespace | hasindexes | hasrules | hastriggers | rowsecurity
Timetable=> SELECT * FROM pg_catalog.pg_tables Timetable=> SELECT oid :: regclass AS table_name FROM pg_class WHERE relkind = 'r' If you’re using any other utility than psql, then these SQLs are probably the simplest to show tables in PostgreSQL: Public | bar | table | scheduler | permanent | 0 bytes | Schema | Name | Type | Owner | Persistence | Size | Description Timetable | run_status | table | scheduler Timetable | parameter | table | scheduler Timetable | migration | table | scheduler Timetable | execution_log | table | scheduler Timetable | dummy_log | table | scheduler Timetable | chain_log | table | scheduler Timetable | active_session | table | scheduler Public | history_session | table | scheduler
If you’re using the psql command-line utility, then try the \dt built-in command. How do I show tables in PostgreSQL?Īnswers to this question may be found in a lot of places. However, even now, information schema support is not on the appropriate level in most databases. And probably it will never be, because the standard committee decided to use a different approach, called Information Schema. Secondly, it’s not part of the SQL standard. I would say never! Firstly, the SHOW command has its own semantics in PostgreSQL. When will SHOW TABLES be available in PostgreSQL? That allows anybody to use it as an extension to standard SQL.
Use psql in command line with postgres app how to#
Now you know what the error message means: there is no run-time parameter with the name “tables”.īy the way, we have a comprehensive article on how to set PostgreSQL parameters.īut how can it be that the same command means opposite things in the two most popular open-source RDBMS? The answer is quite obvious: the SHOW command is not part of the SQL ISO or ANSI standard. People who come from MySQL are always asking the same question: why doesn’t the command SHOW TABLES work in PostgreSQL ?ĮRROR: unrecognized configuration parameter "tables"įirst of all, there is a SHOW command in PostgreSQL, but it’s responsible for returning the value of a run-time parameter. Delete a Postgres User with DependenciesĪttempting to remove a Postgres user with dependencies fails and shows an error.In this article, I will answer the questions: why isn’t there a SHOW TABLES command in PostgreSQL, when will SHOW TABLES in PostgreSQL be available, and how do I list tables with native PostgreSQL methods? Why isn’t there a SHOW TABLES command in PostgreSQL? The removed users are no longer on the list. Recheck the user list to confirm all the roles are deleted: \du Add IF EXISTS to skip users that are not available.Ĥ. The command removes multiple roles at once.
Delete multiple Postgres users by separating individual users with a comma: DROP USER. Locate the users for deletion and use the names in the following step.ģ. Connect to the PSQL client with: sudo -u postgres psql The instructions below explain how to connect to the PostgreSQL client and delete multiple users.ġ. The PSQL client allows deleting more than one Postgres user at once. This output indicates a successful deletion. The user is no longer on the list of roles. Display the user list again to confirm the user is gone: \du The client notifies if the role is nonexistent.Ĥ.
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