Welcome to this exciting data exploration and cleaning project, guided by none other than Alext the Analyst! πβ¨
This repository is dedicated to the dynamic journey of understanding and refining datasets using SQL for comprehensive exploration and cleaning. The primary focus lies on two key domains: COVID-19 Data and Nashville Housing Data.
Alext, your experienced guide in this data adventure, brings a wealth of knowledge in data analysis and exploration. Together, we'll leverage SQL to unravel insights and ensure our datasets are pristine for further analysis.
- SQL Exploration Techniques:
- Utilize SQL queries to navigate through the COVID-19 dataset.
- Uncover trends, patterns, and correlations within the data.
- Apply aggregate functions to extract summary statistics.
- SQL Cleaning Functions and Techniques:
- Address non-uniform data using
CASE
statements. - Standardize data formats with the
CONVERT
function. - Employ filtering conditions to remove outliers.
- Populate data using self join.
- Break out columns using SUBSTRING and PASENAME functions.
- Remove duplicates and drop unused columns.
- Implement the
ROW_NUMBER()
function for data ranking.
- Address non-uniform data using
This project thrives on collaboration! Whether you're a seasoned analyst or a curious learner, your input is valued. Share your thoughts, suggest improvements, and let's innovate together! π
Happy coding and exploring! πβ¨