I’m an accomplished user of SQL; I’m confident creating schema and optimizing queries in ANSI-SQL, for Sybase, MS SQL Server, MySQL, or postgresql. I understand joins, subqueries, indexes, etc., so I don’t need to recapitulate any of that that isn’t different under Oracle.
I’ll be taking a job that’ll require using Oracle. Point me to online resources designed not as an “Intro to SQL for Oracle” but ones that explain “PL/SQL for people who already understand SQL”.
I’m especially interested in the following: a concise guide to PL/SQL extensions, and optimizing Oracle queries.
Oracle® Database PL/SQL User’s Guide and Reference (10g) Really, what more could you want?
If you are new to Oracle, I’d also suggest you spend a bit of time learning its transaction model, as it is subtly different to SQL Server, which could bite you. Here is a good article on it. The other poster who suggested reading Kyte is spot on.