SQL Snippets

Code Typing

SQL Snippets

SQL typing practice with syntax-accurate content.

Beginner · 10 LinesINNER JOIN

Join customers and orders, project a flat report.

Intermediate · 10 LinesGROUP BY with HAVING

Aggregate customer spend and filter high-value accounts.

Advanced · 10 LinesWindow Function

Rank orders by total within each customer.

Advanced · 11 LinesRecursive CTE

Walk a category tree from the root down.

Intermediate · 7 LinesUPSERT

Insert or update on conflict (PostgreSQL syntax).

Intermediate · 10 LinesComposite Index

Accelerate a common query with a multi-column index.