Stored Procedures — Free SQL Tutorial

TL;DR: Learn Stored Procedures in SQL with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.

Stored Procedures in SQL

A stored procedure is a set of SQL statements stored in the database that can be executed repeatedly. Think of it as a SQL function or subroutine.

Benefits: reusable code, better security (restrict direct table access), performance (pre-compiled), data validation in one place.

Stored procedures can have input/output parameters, loops, conditionals, and error handling. They run on the server, reducing network traffic.

-- Create stored procedure
CREATE PROCEDURE proc_name (IN param1 INT, OUT result VARCHAR(100))
BEGIN
  -- SQL statements
  SELECT ... INTO result FROM ...;
END;

-- Call it
CALL proc_name(5, @result);
SELECT @result;

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