[
https://issues.apache.org/jira/browse/CALCITE-2812?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16852445#comment-16852445
]
Haisheng Yuan commented on CALCITE-2812:
----------------------------------------
With this patch, the test suite in master branch can't finish on my laptop
(macOS 10.14.4, JDK 8), is there anyone experiencing the same issue with me?
But it passed on CI pipeline. I hope it is due to local env.
> Add algebraic operators to allow expressing recursive queries
> -------------------------------------------------------------
>
> Key: CALCITE-2812
> URL: https://issues.apache.org/jira/browse/CALCITE-2812
> Project: Calcite
> Issue Type: New Feature
> Components: core
> Affects Versions: 1.18.0
> Reporter: Stamatis Zampetakis
> Assignee: Ruben Quesada Lopez
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.20.0
>
> Time Spent: 9h 40m
> Remaining Estimate: 0h
>
> In order to parse, optimize, and execute, recursive queries, expressed in
> SQL, datalog, SPARQL, or other high level language we need first to be able
> to represent recursive queries in relational algebra.
> The subject has been previously discussed in the dev list (see thread with
> title [Recursive query, graph query,
> Datalog|http://mail-archives.apache.org/mod_mbox/calcite-dev/201712.mbox/%3CCAPSgeESFyih9_hf9=uMWFN00BCR7sjf0T+FRY2=ary3ygm1...@mail.gmail.com%3E])
> where various ideas and optimizations were proposed.
> In this issue, we attempt to address only the algebraic part providing the
> following:
> # logical operator(s) for expressing recursion;
> # naive physical operator(s) for the Enumerable convention;
> # ability to create a recusive plan using the RelBuilder.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
