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IMPALA-2147: Support IS [NOT] DISTINCT FROM and "<=>" predicates

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Enforces that the planner treats IS NOT DISTINCT FROM as eligible for
hash joins, but does not find the minimum spanning tree of
equivalences for use in optimizing query plans; this is left as future
work.

Change-Id: I62c5300b1fbd764796116f95efe36573eed4c8d0
Reviewed-on: http://gerrit.cloudera.org:8080/710
Reviewed-by: Jim Apple <jbapple@cloudera.com>
Tested-by: Internal Jenkins
This commit is contained in:
Jim Apple
2015-08-26 20:18:26 -07:00
committed by Internal Jenkins
parent 022403bffc
commit 1a3d7ffd4f
40 changed files with 1365 additions and 145 deletions
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58
testdata/workloads/functional-query/queries/QueryTest/exprs.test vendored
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@@ -2338,3 +2338,61 @@ select regexp_match_count(tmp.str, tmp.pattern, tmp.start_pos, tmp.params) from
('iPhone\niPad\niPod', '^I.*$', 1, 'imn')) as tmp
---- CATCH
Illegal match parameter x
====
---- QUERY
# IMPALA-2147: IS [NOT] DISTINCT FROM and "<=>"
select NULL <=> NULL
---- RESULTS
true
---- TYPES
BOOLEAN
====
---- QUERY
select NULL <=> 1
---- RESULTS
false
---- TYPES
BOOLEAN
====
---- QUERY
select NULL <=> "foo"
---- RESULTS
false
---- TYPES
BOOLEAN
====
---- QUERY
select NULL IS DISTINCT FROM NULL
---- RESULTS
false
---- TYPES
BOOLEAN
====
---- QUERY
select NULL IS DISTINCT FROM 3.14
---- RESULTS
true
---- TYPES
BOOLEAN
====
---- QUERY
select cast(0 as bigint) IS DISTINCT FROM NULL
---- RESULTS
true
---- TYPES
BOOLEAN
====
---- QUERY
select 2.78 IS DISTINCT FROM 3.14
---- RESULTS
true
---- TYPES
BOOLEAN
====
---- QUERY
select 2.78 IS NOT DISTINCT FROM 3.14
---- RESULTS
false
---- TYPES
BOOLEAN
====