This repository contains SQL queries demonstrating core data analysis skills commonly used in entry-level Data Analyst roles.
- Filtering and aggregation
- GROUP BY and HAVING
- Subqueries
- Joins
- Window functions (ROW_NUMBER, AVG OVER)
- Identifying repeat customers
- Calculating total sales per customer
- Finding top performers within groups
- Filtering records based on aggregated metrics
These queries were written using standard SQL and are compatible with PostgreSQL-style syntax.