PostgreSQL Cursors || Cursors Available In PostgreSQL || Part 1 Simple C...

In this video, we introduce you to PostgreSQL Cursors, focusing on simple cursors as the first part of our series on cursors available in PostgreSQL. Cursors are an essential tool for managing large result sets, allowing you to retrieve and process data in smaller, more manageable chunks rather than all at once.

We start by explaining what a cursor is and how it works in PostgreSQL. You'll learn the scenarios where cursors are particularly useful, such as when working with large datasets or when you need to process query results row by row. The video then guides you through the steps to create and use a simple cursor, with clear and concise examples to help you understand how to implement this in your own database projects.

Additionally, we discuss best practices for using cursors effectively, ensuring that you can handle large amounts of data without overloading your system or causing performance issues. By the end of this tutorial, you'll have a solid understanding of how to leverage simple cursors in PostgreSQL, setting the foundation for more advanced cursor techniques in upcoming videos.

Whether you’re a beginner or looking to expand your PostgreSQL skills, this video is a great resource for understanding and utilizing cursors in your database operations.

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call simple_cursor();

create or replace procedure simple_cursor()

language plpgsql

as $$

declare

lv_string character varying(200);

rec1 record;

cur1 cursor for 

select actor_id, first_name, last_name as end_name from actor order by actor_id;

begin

open cur1;

loop 

fetch cur1 into rec1;

exit when not found;

lv_string := 'Actor ID: '||rec1.actor_id||', Actor First Name: '||rec1.first_name||', Actor Last Name: '||rec1.end_name;

raise notice '%',lv_string;

end loop;

close cur1;

exception when others then

raise notice 'Something Went Wrong';

end;

$$

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