Hi > Attaching v11 patch set. Please review it further.
Currently with the patch, we can allow parallel CTAS when topnode is Gather. When top-node is Append and Gather is the sub-node of Append, I think we can still enable Parallel CTAS by pushing Parallel CTAS down to the sub-node Gather, such as: Append ------>Gather --------->Create table ------------->Seqscan ------>Gather --------->create table ------------->Seqscan And the use case seems common to me, such as: select * from A where xxx union all select * from B where xxx; I attatch a WIP patch which just show the possibility of this feature. The patch is based on the latest v11-patch. What do you think? Best regards, houzj
0001-patch-for-pctas-in-append.patch
Description: 0001-patch-for-pctas-in-append.patch
