I'm looking for specification of SQL:2011 (ISO/IEC 9075:2011). Where can I find it?
(I could find only the older one: SQL 92)
Go to the ISO web site - you can search for 9075
and you'll get 13 hits for the 13 parts of the standard that can be ordered from their online store:
http://www.iso.org/iso/home/search.htm?qt=9075&sort=rel&type=simple&published=on
I don't know of any source where this standard would be available for free, unfortunately.