This repository contains a collection of SQL scripts demonstrating various analytical techniques, such as changes over time, cumulative, performance, data segmentation, part-to-whole analysis.

This repository features SQL-based analysis on bike rentals and the NFT market. The bike rental project explores customer trends, peak rental times, and revenue insights, while the NFT case study analyzes sales trends, blockchain transactions, and market dynamics. Built using SQL queries for data cleaning, aggregation, and joins in MySQL.

Using complex SQL queries, including PostgreSQL window functions, to answer specific business questions. Notably using multiple named subqueries, views to extract data from a database to address specific problems.

Danny Ma's #8WeekSQLChallenge case study solutions.

bunch of SQL Window function query examples

Demo of using window function with JOOQ & Springboot

MySQL-for data analytics

Analyzing and cleaning of COVID-19 data using different SQL functionalities.

Аналитический проект из ad-hoc запросов к базе данных с данными об авиаперевозках

A collection of T-SQL scripts I written throughout my journey as a Data Analyst, Data Engineer, and BI Developer. They demonstrate the use of window functions, calculating dates, dynamic SQL, stored procedures, and other out of the box solutions.

This repository provides a comprehensive guide for building production-ready data warehouses using SQL Server. It walks through the complete process of implementing a modern data warehouse using Medallion Architecture (Bronze, Silver, Gold layers) with practical code examples and detailed.

A Data Collection and Storage project using SQL from TripleTen

MySQL code using subqueries and window functions

Case Study #1 - Danny's Diner

SQL exercises and projects done at alx training

Get ready to boost your SQL proficiency, solve intriguing data problems, and earn a sense of accomplishment as you complete this 8-week journey. Whether you're a data analyst, a database administrator, or simply passionate about data, the '8 Weeks of SQL Challenge' will help you level up your SQL skills and open up new opportunities.

SQL Data Analysis and Estimation Projects

This project analyzes e-commerce order fulfillment using Advanced SQL Techniques and Python-based visualization to uncover insights on sales trends, customer segmentation, shipping cost optimization, and payment preferences.

Building a modern data warehouse with sql, including ETL processes, data modelling, and analytics.