I created this wiki page: https://wiki.postgresql.org/wiki/PostgreSQL_vs_SQL_Standard
I'd been thinking of collecting this information for a while, but was spurred into further action when someone referred me to Markus Winand's PGCon talk slides. I think I got all the issues I currently know of, but there may be more, and others may disagree with my classification of issues or the rationales for violating the spec. Any feedback? -- Andrew (irc:RhodiumToad)
