This is a data cleaning project, and the data to be cleansed is the Exchange Rate Data scraped from CBN's official website.
The dataset was extracted on the 15th of July 2022.
This purpose of this project is to demonstrate how data can be transformed from dirty to clean using SQL, and made valueable for analysis.
- Joins
- Temp tables
- Window functions
- Aggregations
- Descriptive statistics
- Subqueries
- Parametization (T-SQL)
See the References.txt