List PostgreSQL Databases Using Database Client Database clients are applications that can connect to a database server and provide a convenientuser interfacefor viewing and editing databases. The following section provides steps to view all databases on your PostgreSQL server using two popular database...
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In databases, views are virtual tables that are used to represent the result set of single or multiple tables. SQL Shell supports a very convenient meta-command named “\dv” that is used to describe Postgres views. This command retrieves information about Postgres views including the schema nam...
In PostgreSQL, the“\l”meta-command and“pg_databases”catalog are used to show the list of databases. The“\l+”command is used to get the list of available databases with more details such as size, tablespace, description, etc. Use the“\l”or“\l+”commands and the“pg_databases”...
Create a Database in PostgreSQL via pgAdmin To createa databaseusing pgAdmin, follow these steps: Step 1: Open pgAdmin and enter your password toconnect to the database server. Step 2: In the browser section, expand theServersand thenPostgreSQLitems. Right-click theDatabasesitem. ClickCreateand...
This post looks at some of the available commands for managing PostgreSQL databases from PSQL prompt. We will review methods for altering, renaming, dropping, and copying a database. Let's recap some basic PostgreSQL commands: 1. Database creation syntax: ...
The role or user who has been assigned the permission Once you have a list of all users, roles, and permissions in your PostgreSQL deployment, you can check that each user has only the permissions required on the specific databases, tables, columns, or views they need access to....
Deleting Tables in PostgreSQL We can delete the table we created by typing: DROP TABLE playground_equip; DROP TABLE If we give that command to a table that does not exist, we will receive the following error: ERROR: table "playground_equip" does not exist ...
Advanced Select Operations in PostgreSQL We are going to examine some more complex queries. Consider the following: SELECT country.name AS country,city.name AS capital,continent FROM country JOIN city ON country.capital = city.id ORDER BY continent,country; ...
On the older RHEL6 system, ensure the old server is stopped (to make sure that data are not in inconsistent state). Raw el6~#> service postgresql stop Stopping postgresql service: [ OK ] You can ensure that the server is stopped: ...