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Posted to notifications@asterixdb.apache.org by "Till (JIRA)" <ji...@apache.org> on 2018/03/14 23:20:00 UTC
[jira] [Updated] (ASTERIXDB-2254) Recognize common commutative
expressions
[ https://issues.apache.org/jira/browse/ASTERIXDB-2254?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Till updated ASTERIXDB-2254:
----------------------------
Labels: triaged (was: )
> Recognize common commutative expressions
> -----------------------------------------
>
> Key: ASTERIXDB-2254
> URL: https://issues.apache.org/jira/browse/ASTERIXDB-2254
> Project: Apache AsterixDB
> Issue Type: Improvement
> Components: COMP - Compiler
> Reporter: Wail Alkowaileet
> Priority: Major
> Labels: triaged
>
> Currently, Algebricks does not recognize common commutative expressions.
> Query:
> {noformat}
> SELECT t.retweet_count + 10, 10 + t.retweet_count
> FROM Tweets as t{noformat}
>
> Plan:
> {noformat}
> distribute result [$$15]
> -- DISTRIBUTE_RESULT |PARTITIONED|
> exchange
> -- ONE_TO_ONE_EXCHANGE |PARTITIONED|
> project ([$$15])
> -- STREAM_PROJECT |PARTITIONED|
> assign [$$15] <- [{"$1": numeric-add($$16, 10), "$2": numeric-add(10, $$16)}]
> -- ASSIGN |PARTITIONED|
> project ([$$16])
> -- STREAM_PROJECT |PARTITIONED|
> assign [$$16] <- [$$t.getField("retweet_count")]
> -- ASSIGN |PARTITIONED|
> project ([$$t])
> -- STREAM_PROJECT |PARTITIONED|
> exchange
> -- ONE_TO_ONE_EXCHANGE |PARTITIONED|
> data-scan []<-[$$17, $$t] <- TwitterDataverse.Tweets
> -- DATASOURCE_SCAN |PARTITIONED|
> exchange
> -- ONE_TO_ONE_EXCHANGE |PARTITIONED|
> empty-tuple-source
> -- EMPTY_TUPLE_SOURCE |PARTITIONED|
> {noformat}
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