SQL Syntax

From the basics of variable declaration to advanced architectural patterns. Select a topic below to see syntax examples and interactive practice.

Implementation guide and practice for basics.

Implementation guide and practice for queries.

Implementation guide and practice for aggregations.

Implementation guide and practice for joins.

Implementation guide and practice for subqueries.

Implementation guide and practice for window functions.

Implementation guide and practice for indexes.

Implementation guide and practice for transactions.

Want to go beyond syntax?

Mastering the rules is just the start. Our full SQL course helps you build logical fluency through progressive challenges.