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Education

This is the Education section of the Command Prompt Website. Here you will find blogs specifically about how to use Postgres and related technologies.

How to use the ALTER TABLE command in PostgreSQL

In PostgreSQL, the ALTER TABLE command serves multiple functionalities on a table like adding a column, dropping a column, renaming a table/columns, etc.

How to drop a table in PostgreSQL

To drop/delete a table from the PostgreSQL database, open the SQL SHELL and type the DROP TABLE command followed by the table name.

Different methods to create a table in PostgreSQL

In PostgreSQL, a table is used to organize the complex, detailed, and unordered data. A table can be created using the "CREATE TABLE" statement.

How to drop a database in PostgreSQL

Execute the DROP DATABASE command from psql while dropdb command from the command prompt to remove/drop any specific PostgreSQL database.

How to select/access a database in PostgreSQL

There are multiple ways to select or access a PostgreSQL database, such as Command Prompt (cmd), SQL SHELL (psql), and pgAdmin 4.

How to download and install PostgreSQL

Download PostgreSQL “exe” file > open downloaded file > specify installation directory > select components > select directory > set password > and install.

How to Create a Database in PostgreSQL

A Postgres database can be created using “CREATE DATABASE” or “createdb” commands. The difference is that the “createdb” can be executed from the command prompt.

How to Create a Table in PostgreSQL & Perform CRUD Operations

Tables in PostgreSQL can be created following the syntax discussed in the article. You can insert, update, read, and delete data from the table with the help of queries.