> For the complete documentation index, see [llms.txt](https://book.thedatascienceinterviewproject.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.thedatascienceinterviewproject.com/sql.md).

# SQL

- [Basics](https://book.thedatascienceinterviewproject.com/sql/basics.md)
- [Joins](https://book.thedatascienceinterviewproject.com/sql/joins.md)
- [Temporary Datasets](https://book.thedatascienceinterviewproject.com/sql/temporary-datasets.md): A summary of Temp Table vs Table variable vs CTE
- [Windows Functions](https://book.thedatascienceinterviewproject.com/sql/windows-functions.md)
- [Time](https://book.thedatascienceinterviewproject.com/sql/time.md)
- [Functions & Stored Proc](https://book.thedatascienceinterviewproject.com/sql/functions.md)
- [Index](https://book.thedatascienceinterviewproject.com/sql/index.md)
- [Performance Tuning](https://book.thedatascienceinterviewproject.com/sql/performance-tuning.md)
- [Problems](https://book.thedatascienceinterviewproject.com/sql/problems.md)