This PR improves the shared subplan (aka. common table expression) support to handle TPC-H query 15. There are two main updates:
Augmented SimpleCostModel to handle SharedSubplanReference physical plan node.
Revised SharedSubplanReference logical/physical plan nodes to avoid ExprId resolution collision when a same shared plan is referenced multiple times in a query.
pateljm
commented
8 years ago
This PR improves the shared subplan (aka. common table expression) support to handle TPC-H query 15. There are two main updates:
SimpleCostModelto handleSharedSubplanReferencephysical plan node.SharedSubplanReferencelogical/physical plan nodes to avoidExprIdresolution collision when a same shared plan is referenced multiple times in a query.