PostgreSQL Tutorial

Welcome to the PostreSQL tutorial. This website is a simple introduction to postgresql object-relational database system.
If you are a beginner in postgresql then this is the perfect place to start initiation in postgresql.
You can find examples with simple operations (eg: select, insert, update, create, delete) and also with advanced operations such as functions(eg: Create Function, Drop Function) and triggers(eg: Create Trigger, Drop trigger).

In PostgreSQL are four procedural languages with you can write functions:

  • PL/pgSQL
  • PL/Tcl
  • PL/Perl
  • PL/Python

This postgresql tutorial will be concentrated on PL/pgSQL language.

PL/pgSQL – SQL Procedural Language

The basic commands of PL/pgSQL – SQL Procedural Language:


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