On 14 January 2016 at 11:19, Julien Rouhaud <julien.rouhaud@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