Lectures

Control structures IF, CASE, and RETURN in PL/pgSQL let you build decision logic, do different stuff depending on conditions, and return values from functions. In this lecture, you'll learn how to use conditional operators and check out some common mistakes people make with them.

In this lecture, you'll learn how to use the LOOP, FOR, and WHILE loops in the PL/pgSQL procedural language for PostgreSQL. We'll go over the syntax, examples, common mistakes, and best practices for automating repetitive tasks and processing data in your database.

In this lecture, you'll learn how to control loop execution in PL/pgSQL using the EXIT and CONTINUE statements: how to break out of a loop based on a condition, skip certain iterations, combine both approaches, and avoid common mistakes when processing data in loops.

In this lecture, you'll learn how to use nested loops and recursion in PL/pgSQL: why you need them, how to implement them, when to use them, and what common mistakes you might run into. Examples with a multiplication table, factorial, and Fibonacci numbers will help you lock in the material with some hands-on practice.

In this article, you'll find out what makes functions and procedures different in PostgreSQL: what they're for, where to use them, what the limitations and advantages of each are. Detailed comparisons, code examples, and practical tips will help you pick the right tool for your tasks.