I’ll say this, and not just because I advertise this product, but I’ll prove it: Query Xtractor is one of the best tools to learn SQL! Once again: Query Xtractor – from the Data Xtractor suite – is one of the best possible ways to help you learn SQL! And not just plain and simple SQL, but SQL adapted to different real world DBMSs or standalone database engines.
I always admired how most database administrators I worked with love typing both simple and complex queries with absolutely no help from a QBE (Query by Examples) graphical interface. Truth being said, the large majority of database administration tools offer a somehow poor user experience in this regard. And Query Xtractor is intended to improve this area.
Typical example on using Data Xtractor to empowering the novice SQL end-user and eventually give more freedom to the database administrators and developers in assisting the clerk on features not-implemented yet by the financial system or another database application.