What is SQL ETL?

SQL ETL refers to the use of SQL (Structured Query Language) for Extract, Transform, and Load processes. Instead of dedicated ETL tools, SQL scripts and stored procedures are used to extract data from various sources, transform it according to business rules, and load it into a target data warehouse or data mart. This approach is often used for smaller data volumes or when data transformations are relatively simple and can be efficiently handled within the database environment. It leverages the database engine's processing power and eliminates the need for external ETL software.