Pro Oracle SQL (Expert's Voice in Oracle) cover
Pro Oracle SQL (Expert's Voice in Oracle)
by Karen Morton, Robyn Sands, Jared Still, Riyaj Shamsudeen, Kerry Osborne
ISBN: 1430232285
Buy on Amazon
Found in 1 comment on Hacker News
daswolle · 2014-04-28 · Original thread
And these are some links I've been looking at/considering:

http://www.amazon.com/Advanced-Oracle-SQL-Programming-Focus/...

http://www.amazon.com/Pro-Oracle-SQL-Karen-Morton/dp/1430232...

http://www.amazon.com/SQL-Antipatterns-Programming-Pragmatic...

http://www.amazon.com/Joe-Celkos-Smarties-Fourth-Edition/dp/...

http://www.amazon.com/SQL-Tuning-Dan-Tow/dp/0596005733