SQL Stored Procedures: When and How to Use Them
Stored procedures keep data logic close to the data. After years of building query strings in application code, here is how I decide when a procedure earns its place. Stored procedures are saved SQL programs that live in the database. After years of working with application code that constructs queries as strings, I came to appreciate stored procedures for what they are: a way to keep data logic close to the data. They are not the right tool for every problem, and I have seen them overused to the point where the database became an application server. But for the right problems, they are indispensable. What a Stored Procedure Is A stored procedure is a named block of SQL that the database stores and executes. You call it by name, pass arguments, and it runs on the server. from a plain query is that the procedure is parsed and optimized once, then stored. Subsequent calls skip the parsing step, which matters for complex logic that runs frequently. CREATE PROCEDURE get_customer_orders( IN customer_id INT, IN start_date DATE ) BEGIN SELECT o.id, o.created_at, o.total FROM orders o WHERE o.customer_id = customer_id AND o.created_at >= start_date ORDER BY o.created_at DESC; END; This…