AWS Redshift Stored Procedures | An Overview

Let’s examine the AWS redshift stored configuration process in more detail. As part of our AWS Support Service, Skynats answers all of your questions and provides superior solutions.

What is AWS stored procedure?

Users can run unified analytics using a lakehouse architecture using the specialized data warehouse provided by AWS Redshift. The same is true for using real-time analytics and AI or machine learning without re-architecting. This process is frequently used for business logic processes like data transformation and validation.

The Benefits of Stored Procedures

A user-defined routine stored in a database that can be used by other third-party applications is a stored procedure. This makes it simple to reuse the same set of series. There are several advantages that come with using stored procedures:

Encapsulation: Encapsulation helps group your application’s complex queries into a small number of parameters so you won’t have to spend the entire time processing them all.

Accessibility: Users don’t have complete access to tables; they can only execute stored procedures to retrieve or update specific fields.

Maintainability: Managing stored procedures on the database is simpler than managing the entire body of application code.

Data validation: Assures that only legitimate data is stored and provides security for data storage.

The queries, operations, and logic that supply the connected service with useful data are contained in the stored procedure.

Let’s look at a few specifics to better understand it.

• The connected application does not need any predefined knowledge of the stored procedure, only how to call them.
• You don’t have to make changes to the connected application service as a whole; you can just modify the stored procedures.
• We can update the security and privileges of the stored procedures separately from the connected service privileges.

Redshift Stored Procedure Syntax

By using CREATE or REPLACE PROCEDURE command, you can initially create a Redshift stored procedure. A block-quoting mechanism is provided by the PL/pgSQL application. The stored producers are essentially described as a block or a body or numerous lines of text.

You can use the following syntax as a guide to creating stored procedures in the Redshift database:

CREATE PROCEDURE sp_name 
  ( [ [ argumentname ] [ argumentmode ] argumenttype [, ...] ] )
AS $$
  procedure_body
$$ LANGUAGE plpgsql 
;

An easy illustration of a stored procedure is provided below:

CREATE PROCEDURE redshift_example_sp()
AS $$
BEGIN
  RAISE INFO 'This is an example of Redshift Stored Procedure';
END;
$$
LANGUAGE plpgsql
;

Calling Stored Procedures

You can use the CALL command, which has the following syntax, to run the AWS stored procedure:

CALL procedure_name( <arguments> );

The calling procedure returns an interim table with the following functionality:

BEGIN;
CALL table_cheaper_than(50, 'product_sheet');
SELECT * FROM product_sheet;
END;

Further, use the CALL command as demonstrated below to run AWS Redshift stored procedures:

dev=# call redshift_sample_sp();
INFO:  This is sample Reshift Stored Procedure
CALL

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