Ron Hu created SPARK-17073:
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Summary: generate basic stats for column
Key: SPARK-17073
URL: https://issues.apache.org/jira/browse/SPARK-17073
Project: Spark
Issue Type: Sub-task
Components: Optimizer
Affects Versions: 2.0.0
Reporter: Ron Hu
For a specified column, we need to generate basic stats including max, min,
number of nulls, number of distinct values, max column length, average column
length.
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