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Apache Spark commented on SPARK-14502: -------------------------------------- User 'dongjoon-hyun' has created a pull request for this issue: https://github.com/apache/spark/pull/12267 > Add optimization for Non-Nullable Binary Comparison Simplification > ------------------------------------------------------------------ > > Key: SPARK-14502 > URL: https://issues.apache.org/jira/browse/SPARK-14502 > Project: Spark > Issue Type: Improvement > Components: SQL > Reporter: Dongjoon Hyun > > For non-nullable binary comparisons, we can simplifies `semantically-equal > expressions` further: > 1) Replace '=', '<=', and '>=' with 'true' literal > 2) Replace '<' and '>' with 'false' literal > For example, the following example plan > {code} > scala> sql("SELECT * FROM (SELECT explode(array(1,2,3)) a) T WHERE a BETWEEN > a AND a+7").explain() > ... > : +- Filter ((a#59 >= a#59) && (a#59 <= (a#59 + 7))) > ... > {code} > will be optimized into the following. > {code} > : +- Filter (a#47 <= (a#47 + 7)) > {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org