On 04/11/2018 06:23, David Rowley wrote: > Thanks for looking at this. > > On 2 November 2018 at 20:30, Peter Eisentraut > <peter.eisentr...@2ndquadrant.com> wrote: >> <para> >> - Execution-time partition pruning currently occurs for the >> + Execution-time partition pruning currently only occurs for the >> <literal>Append</literal> and <literal>MergeAppend</literal> node >> types. >> + It is not yet implemented for the <literal>ModifyTable</literal> node >> + type. >> </para> >> >> Isn't this implied by the preceding paragraph >> >> Currently, pruning of partitions during the planning of an UPDATE or >> DELETE command is implemented using the constraint exclusion method > > That paragraph is talking about plan-time partition pruning. The > paragraph the patch changes is mentioning execution-time partition > pruning. In PG11 we have plan-time partition pruning for Append and > MergeAppend. UPDATE/DELETE does pruning, but it uses the constraint > exclusion code which does not work for HASH partitioned tables. In > PG11 we only have run-time partition pruning for Append. MergeAppend > support was only added in 5220bb7533 (PG12).
I see now. The actual documentation change was separate in db72302b0a8. Committed your change. -- Peter Eisentraut http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
