[CALCITE-88] Add collation as a trait and a kind of RelNode metadata

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.1.0-incubating
• Labels: github-import
• Assignee: Julian Hyde
• Reporter: GitHub Import
• Created: 18/Jun/14 08:05
• Updated: 23/Mar/15 08:08
• Resolved: 08/Feb/15 17:31

Description

Allow for traits to propagate up the tree.
Ex: J2-F-J1
If J1 uses SortMerge for Join then filter carries forward sordidness trait on join keys; If J2 is joining on same keys then it can take advantage of the sordidness trait of its child.

---------------- Imported from GitHub ----------------
Url: https://github.com/julianhyde/optiq/issues/88
Created by: jpullokkaran
Labels:
Created at: Thu Nov 28 00:21:59 CET 2013
State: open

Issue Links

• is related to: CALCITE-526 Add EnumerableMergeJoin, which exploits sorted inputs