Hello, I remember that sqlite project (https://www.sqlite.org/index.html) do have a very serious test process (https://www.sqlite.org/testing.html) in place. Quote "Sqllogictest is a program designed to verify that an SQL database engine computes correct results by comparing the results to identical queries from other SQL database engines. Sqllogictest was originally designed to test SQLite, but it is database engine neutral and can just as easily be used to test other database products." The link is here: https://www.sqlite.org/sqllogictest/doc/trunk/about.wiki Other technique is described here: https://www.cockroachlabs.com/blog/testing-random-valid-sql-in-cockroachdb/ Hope this helps. Regards, Cristian.