[ https://issues.apache.org/jira/browse/CALCITE-3546?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ASF GitHub Bot updated CALCITE-3546: ------------------------------------ Labels: pull-request-available (was: ) > Improve EnumerableDefaults nested loop join > ------------------------------------------- > > Key: CALCITE-3546 > URL: https://issues.apache.org/jira/browse/CALCITE-3546 > Project: Calcite > Issue Type: Improvement > Affects Versions: 1.21.0 > Reporter: Ruben Q L > Assignee: Ruben Q L > Priority: Minor > Labels: pull-request-available > Fix For: 1.22.0 > > > The current implementation of {{EnumerableDefaults#nestedLoopJoin}} builds > the complete join result in a list before returning it. As specified in a > comment there, this is "easy, but hogs memory". Also, it is not very > efficient if after the join there is a LIMIT. > An alternative implementation of nested loop join can be proposed, based on > iterating through the outer an inner enumerables, and returning the results > step by step (something similar to {{EnumerableDefaults#correlateJoin}}). -- This message was sent by Atlassian Jira (v8.3.4#803005)