I\'m not fanatic on any database but I wish to see differences between vendors.
For instance, I use mostly Oracle and I see that others (MySQL, SQL Server, PostgreSQL, .
I don't have a lot to contribute other than to say that Sybase ASE is, in my opinion, the red-headed step child of RDBMS'. It's missing many of the handy functions that you take for granted with SQL Server or Oracle (and even other flavors of Sybase), you can't link servers and do distributed queries without 3rd party tools, Sybase management tools and IDE's are limited and very poor (again, my opinion), and it's just painful to work with. I guess there's a reason Sybase has only 3% of market share.
Side note: If, like me, you must work with multiple RDBMS' and you need a good tool for that, check out Aqua Data Studio from AquaFold. I just started using it and it's really good. It's also got some great utilities like ER modeling and compare tools built in.