On 2018-Dec-10, David Rowley wrote: > On Wed, 5 Dec 2018 at 20:24, Amit Langote <langote_amit...@lab.ntt.co.jp> > wrote:
> > However, for pruned partitions' subplans, what's actually shown is the > > string "(never executed)", not loops. So, wouldn't it be better to tell > > the readers to look for that instead of "loops"? > > I don't really see any issues with the existing documentation here. > Remember that pruning can be performed multiple times when a parameter > changes that was found to match the partition key and the > Append/MergeAppend is rescanned. I lean towards Amit's side. I think we're too laconic about many details of EXPLAIN's output. This is two lines about an interesting detail that's pretty obscure. It doesn't hurt to have it there. -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
