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Kevin Risden commented on SOLR-8593: ------------------------------------ [~joel.bernstein] - Not sure I understand the need for a having stream... To quote [~julianhyde]: {quote} In fact, Calcite will convert query into a Scan -> Filter -> Aggregate -> Filter -> Project logical plan (the first Filter is the WHERE clause, the second Filter is the HAVING clause), {quote} Since a having clause is really just a filter on an aggregate, I'm not sure what we could really gain from pushing it down much further. The Avatica/Calcite JDBC implementation supports the having clause if we don't optimize for it. > Integrate Apache Calcite into the SQLHandler > -------------------------------------------- > > Key: SOLR-8593 > URL: https://issues.apache.org/jira/browse/SOLR-8593 > Project: Solr > Issue Type: Improvement > Reporter: Joel Bernstein > Assignee: Joel Bernstein > Attachments: SOLR-8593.patch > > > The Presto SQL Parser was perfect for phase one of the SQLHandler. It was > nicely split off from the larger Presto project and it did everything that > was needed for the initial implementation. > Phase two of the SQL work though will require an optimizer. Here is where > Apache Calcite comes into play. It has a battle tested cost based optimizer > and has been integrated into Apache Drill and Hive. > This work can begin in trunk following the 6.0 release. The final query plans > will continue to be translated to Streaming API objects (TupleStreams), so > continued work on the JDBC driver should plug in nicely with the Calcite work. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org