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Posted to issues@spark.apache.org by "Ron Hu (JIRA)" <ji...@apache.org> on 2016/08/16 06:32:21 UTC

[jira] [Created] (SPARK-17075) Cardinality Estimation of Predicate Expressions

Ron Hu created SPARK-17075:
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             Summary: 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


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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