[CALCITE-3542] Implement RepeatUnion All=false

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.21.0
• Fix Version/s: 1.22.0
• Labels: pull-request-available
• Assignee: Ruben Q L
• Reporter: Ruben Q L
• Created: 27/Nov/19 16:50
• Updated: 06/Mar/20 04:34
• Resolved: 05/Dec/19 09:40

Description

CALCITE-2812 introduced recursive queries in Calcite via the new operator RepeatUnion.
However, this initial implementation was not complete, since it only provided RepeatUnion ALL (i.e. duplicates were returned).
The current ticket aims to implement the missing feature: RepeatUnion non-ALL (i.e. duplicates must be discarded).

Issue Links

• is related to: CALCITE-2812 Add algebraic operators to allow expressing recursive queries
• links to: GitHub Pull Request #1613