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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-17075) Cardinality Estimation of Predicate Expressions
Date Fri, 03 Mar 2017 09:22:45 GMT

    [ https://issues.apache.org/jira/browse/SPARK-17075?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15893971#comment-15893971
] 

Apache Spark commented on SPARK-17075:
--------------------------------------

User 'wzhfy' has created a pull request for this issue:
https://github.com/apache/spark/pull/17148

> Cardinality Estimation of Predicate Expressions
> -----------------------------------------------
>
>                 Key: SPARK-17075
>                 URL: https://issues.apache.org/jira/browse/SPARK-17075
>             Project: Spark
>          Issue Type: Sub-task
>          Components: Optimizer
>    Affects Versions: 2.0.0
>            Reporter: Ron Hu
>            Assignee: Ron Hu
>             Fix For: 2.2.0
>
>
> A filter condition is the predicate expression specified in the WHERE clause of a SQL
select statement.  A predicate can be a compound logical expression with logical AND, OR,
NOT operators combining multiple single conditions.  A single condition usually has comparison
operators such as =, <, <=, >, >=, ‘like’, etc.



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