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answers:

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I'm interested in measuring and improving (where necessary) my team's SQL-92 skills. Can anyone recommend an appropriate on-line course and/or examination?

Ideally it would be vendor-neutral, but it could also be MSSQL/Oracle specific, as long as the proprietary bits were flagged as such.

+1  A: 

W3Schools provides an SQL tutorial and quiz. Has anyone tried them?

I just did the quiz and it's very basic. 20 questions that I got 100% right in just over 3 minutes. I guess it's not bad for weeding people out in an initial interview.

Andrew Swan
+1  A: 

Try SQL Exercises: http://www.sql-ex.ru

msi77
That site seems really good, I'll give it a closer look.
Andrew Swan