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652d4b4699
Fixes two issues that can occur when generating the plan for a
stmt with an empty result set (e.g. due to limit 0 or constant
predicates that evaluate to false):
1) Unions with an inline view that produces an empty result set
does not create the EmptySetNode for the correct stmt.
2) An EmptySetNode may contain non-materialized tuples which
will fail a precondition check when generating the thrift
plan.
Change-Id: I1511c755be3a59fdb8934624fd08250323266d27
Reviewed-on: http://gerrit.sjc.cloudera.com:8080/4744
Reviewed-by: Alex Behm <alex.behm@cloudera.com>
Tested-by: jenkins
101 lines
1.8 KiB
Plaintext
101 lines
1.8 KiB
Plaintext
====
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---- QUERY
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# testtbl is empty
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select * from testtbl
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---- TYPES
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bigint, string, int
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---- RESULTS
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====
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---- QUERY
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# month ends at 12
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select int_col from alltypessmall where month > 100
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---- TYPES
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int
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---- RESULTS
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====
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---- QUERY
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# Empty partitioned table test
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select field from emptytable
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---- TYPES
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string
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---- RESULTS
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====
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---- QUERY
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# Constant conjunct.
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select t1.id, t2.id
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from functional.alltypestiny t1
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left outer join functional.alltypes t2
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on t1.id = t2.id
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where false
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---- TYPES
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int, int
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---- RESULTS
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====
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---- QUERY
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# Constant conjunct in query block with an aggregation.
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select count(int_col), avg(double_col), count(*)
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from functional.alltypes
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where null
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---- TYPES
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bigint, double, bigint
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---- RESULTS
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0,NULL,0
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====
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---- QUERY
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# Constant conjunct in inline view.
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select e.id, f.id
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from functional.alltypessmall f
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inner join
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(select t1.id
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from functional.alltypestiny t1
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left outer join functional.alltypes t2
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on t1.id = t2.id
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where 1 + 3 > 10) e
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on e.id = f.id
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---- TYPES
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int, int
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---- RESULTS
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====
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---- QUERY
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# Limit 0
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select t1.id, t2.id
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from functional.alltypestiny t1
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left outer join functional.alltypes t2
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on t1.id = t2.id
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limit 0
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---- TYPES
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int, int
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---- RESULTS
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====
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---- QUERY
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# Limit 0 in query block with an aggregation
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select count(int_col), avg(double_col), count(*)
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from functional.alltypes
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limit 0
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---- TYPES
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bigint, double, bigint
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---- RESULTS
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====
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---- QUERY
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# Limit 0 in inline view
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select e.id, f.id
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from functional.alltypessmall f
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inner join
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(select t1.id
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from functional.alltypestiny t1
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left outer join functional.alltypes t2
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on t1.id = t2.id
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limit 0) e
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on e.id = f.id
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---- TYPES
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int, int
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---- RESULTS
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====
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---- QUERY
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# IMPALA-1234: Analytic with constant empty result set failed precondition check in FE
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select MIN(int_col) OVER () FROM alltypes limit 0
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---- RESULTS
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---- TYPES
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INT
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====
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