t3rmin4t0r commented on a change in pull request #656: HIVE-21742 :
Vectorization: CASE result type casting
URL: https://github.com/apache/hive/pull/656#discussion_r289582682
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File path: ql/src/test/results/clientpositive/perf/spark/query77.q.out
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@@ -826,7 +826,7 @@ STAGE PLANS:
outputColumnNames: _col1, _col2, _col3, _col4, _col5
Statistics: Num rows: 95833780 Data size: 13030622681 Basic
stats: COMPLETE Column stats: NONE
Select Operator
- expressions: 'web channel' (type: string), _col3 (type:
int), _col4 (type: decimal(17,2)), CASE WHEN (_col1 is not null) THEN (_col1)
ELSE (0) END (type: decimal(17,2)), (_col5 - CASE WHEN (_col2 is not null) THEN
(_col2) ELSE (0) END) (type: decimal(18,2))
+ expressions: 'web channel' (type: string), _col3 (type:
int), _col4 (type: decimal(17,2)), CASE WHEN (_col1 is not null) THEN (_col1)
ELSE (CAST( 0 AS decimal(17,2))) END (type: decimal(17,2)), (_col5 - CASE WHEN
(_col2 is not null) THEN (_col2) ELSE (CAST( 0 AS decimal(17,2))) END) (type:
decimal(18,2))
Review comment:
No constant folding again?
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