I’m slowing learning the differences in Oracle vs. SQL Server (and MySQL). Digging around on the net I found SQLZoo – a neat site which gives you a ‘interactive SQL tutorial’ – but what is neat is they show you the same statement in several major databases (SQL Server, MySQL, DB2, Access, Postgres, Oracle, and more…)
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I love SQLZoo! The side-by-side comparison of the same statement in multiple databases has been invaluable for me.
In developing a database abstraction engine that needs to support multiple databases, I have referred to SQLZoo frequently.
If you have to use multiple databases, it is a great resource.