Andres Freund <andres@anarazel.de> writes:
> On 05/22/2009 03:42 PM, Heikki Linnakangas wrote:
>> Isn't the discarded count always equal to (# of rows in table - matched
>> tuples)? Seems pretty redundant to me.
> Not for EXISTS(), LIMIT and similar.
It doesn't really seem useful enough to justify breaking client-side
code that looks at EXPLAIN output.
This sort of ties into the discussions we have periodically about
allowing EXPLAIN to output XML or some other more-machine-friendly
data format. The barrier for adding additional output fields would
be a lot lower in such a format.
regards, tom lane
