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A simple online SQL querying test based on jitbit's SQL interview. If you think you might need a refresher in basic SQL querying, focusing on the types of queries you might have to write for an application, give it a try!.

This test covers the basics that all developers dealing with sql should know. You might not be able to rattle off each query without looking at any SQL documentation, but you should more or less know the way to get to the answer. Important concepts that are tested include basic GROUP BY ... HAVING queries, INNER and OUTER joins (SQLite lacks OUTER JOIN (RIGHT), but has LEFT OUTER JOIN, be careful!), basic aggregation functions like COUNT, MAX, and SUM, and basic data functions like COALESCE.


online sql test



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