Pengcheng Xiong created HIVE-11937:
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Summary: Improve StatsOptimizer to deal with query with additional
constant columns
Key: HIVE-11937
URL: https://issues.apache.org/jira/browse/HIVE-11937
Project: Hive
Issue Type: Improvement
Reporter: Pengcheng Xiong
Assignee: Pengcheng Xiong
Right now StatsOptimizer can deal with query such as "select count(1) from src"
by directly looking into the metastore. However, it can not deal with "select
'1' as one, count(1) from src" which has an additional constant column. We may
improve it.
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