On 14 January 2016 at 11:19, Julien Rouhaud <julien.rouh...@dalibo.com> wrote: > + /* don't try anything unless there's two Vars */ > + if (varlist == NULL || list_length(varlist) < 2) > + continue; > > To be perfectly correct, the comment should say "at least two Vars".
Apologies for butting in and I appreciate I don't have any ownership over this codebase or right to suggest any changes, but this just caught my eye before I could hit "delete". My mantra tends to be "why, not what" for inline comments; in this case you can get the same information from the next line of code as you get from the comment. Perhaps something like /* it's clearly impossible to remove duplicates if there are fewer than two GROUPBY columns */ might be more helpful? (also sorry if I've misunderstood what it _actually_ does, I just made an assumption based on reading this thread!) Geoff -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers