This is a collection of "code challenges" (and my solutions) from SoloLearn's SQL certification course. The solutions are all single queries, but several skills have been practiced in their completion. The tables have been recreated for this project as the tables in the course are pre-built and only shown as images. If you happen to go through the commit log, you'll see that I added the vast majority in one day; this is because I'd completed most of the course before getting the idea to add the challenges here to showcase my practice and development.
- Creating tables and inserting data
- Primary Keys, AUTOINCREMENT, datatypes
- Altering and updating tables
- Joins
- INNER
- LEFT
- Subqueries
- Aggregate functions
- Sorting data with ORDER BY
- Filtering data with WHERE
- Comparing columns with GROUP BY
- Logical operators
- AND, OR, BETWEEN, IN, NOT IN
>, <, =, !=, <=, >=
- Aliases
- LIKE and wildcards
- Views