sql developer CSV hint

Outputs a csv . There are others too.

Tom again

http://www.oracle.com/technetwork/issue-archive/2013/13-jul/o43asktom-1958803.html

More on flashback

flashback table t
to before drop;

NULLs are a bad idea use 'UNKNOWN' cos it gets indexed - another Myth!

I have thought this for a long time and sure enough Tom explains.

http://www.oracle.com/technetwork/issue-archive/2012/12-nov/o62asktom-1867739.html