Robert Haas escribió:
> On Thu, Oct 8, 2009 at 3:30 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> > I notice also that the patch has chosen to represent Dml in XML/JSON
> > explain output as Node Type = Dml with an entirely new attribute
> > Operation to indicate Insert/Update/Delete. Do we really want to
> > go there? Adding single-purpose attributes doesn't seem like a great
> > idea.
>
> Well, I was the one who suggested doing it that way, so you can blame
> me for that, but it is consistent with how we've handled other things,
> like setops and jointypes: the details get moved to another tag so as
> to avoid an explosive growth in the number of node types that clients
> must be prepared for.
Perhaps how a join is implemented in a plan can be considered a
"detail", but I don't think the same holds true for insert vs. update.
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