The person who earns this badge has mastered queries using SQL to retrieve data from a database and create reports.
The earner has completed 20 collections with more than 100 intermediate to advanced queries using different databases. Eventually, they have demonstrated mastering by passing an exam with at least 80% of queries designed without any mistake.
In particular, the earner has mastered how to…
- Design queries using any number of tables and relations.
- Design queries based on other queries.
- Design queries using a wide range of String, Mathematics, Datetime, and control flow functions.
- Construct reports grouping data and mixing results with any number of different but related results.
- Design queries properly using the key indexes of the scheme.