Pengcheng Xiong created HIVE-14563:
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Summary: StatsOptimizer treats NULL in a wrong way
Key: HIVE-14563
URL: https://issues.apache.org/jira/browse/HIVE-14563
Project: Hive
Issue Type: Bug
Reporter: Pengcheng Xiong
Assignee: Pengcheng Xiong
{code}
OSTHOOK: query: explain select count(key) from (select null as key from src)src
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
Stage-0 is a root stage
STAGE PLANS:
Stage: Stage-0
Fetch Operator
limit: 1
Processor Tree:
ListSink
PREHOOK: query: select count(key) from (select null as key from src)src
PREHOOK: type: QUERY
PREHOOK: Input: default@src
#### A masked pattern was here ####
POSTHOOK: query: select count(key) from (select null as key from src)src
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
#### A masked pattern was here ####
500
{code}
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