vineetgarg02 commented on a change in pull request #656: HIVE-21742 :
Vectorization: CASE result type casting
URL: https://github.com/apache/hive/pull/656#discussion_r290017784
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File path: ql/src/test/results/clientpositive/infer_join_preds.q.out
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@@ -1187,7 +1187,7 @@ STAGE PLANS:
predicate: prid is not null (type: boolean)
Statistics: Num rows: 1 Data size: 668 Basic stats: COMPLETE
Column stats: NONE
Select Operator
- expressions: idp_warehouse_id (type: bigint), prid (type:
bigint), concat(CAST( CASE WHEN (prid is null) THEN (1) ELSE (prid) END AS
STRING), ',', CASE WHEN (prtimesheetid is null) THEN (1) ELSE (prtimesheetid)
END, ',', CASE WHEN (prassignmentid is null) THEN (1) ELSE (prassignmentid)
END, ',', CASE WHEN (prchargecodeid is null) THEN (1) ELSE (prchargecodeid)
END, ',', CASE WHEN (prtypecodeid is null) THEN ('') ELSE (CAST( prtypecodeid
AS STRING)) END, ',', CASE WHEN (practsum is null) THEN (1) ELSE (practsum)
END, ',', CASE WHEN (prsequence is null) THEN (1) ELSE (prsequence) END, ',',
CASE WHEN (length(prmodby) is null) THEN ('') ELSE (prmodby) END, ',', CASE
WHEN (prmodtime is null) THEN (TIMESTAMP'2017-12-08 00:00:00') ELSE (prmodtime)
END, ',', CASE WHEN (prrmexported is null) THEN (1) ELSE (prrmexported) END,
',', CASE WHEN (prrmckdel is null) THEN (1) ELSE (prrmckdel) END, ',', CASE
WHEN (slice_status is null) THEN (1) ELSE (slice_status) END, ',', CASE WHEN
(role_id is null) THEN (1) ELSE (role_id) END, ',', CASE WHEN
(length(user_lov1) is null) THEN ('') ELSE (user_lov1) END, ',', CASE WHEN
(length(user_lov2) is null) THEN ('') ELSE (user_lov2) END, ',', CASE WHEN
(incident_id is null) THEN (1) ELSE (incident_id) END, ',', CASE WHEN
(incident_investment_id is null) THEN (1) ELSE (incident_investment_id) END,
',', CASE WHEN (odf_ss_actuals is null) THEN (1) ELSE (odf_ss_actuals) END)
(type: string)
+ expressions: idp_warehouse_id (type: bigint), prid (type:
bigint), concat(CAST( CASE WHEN (prid is null) THEN (1L) ELSE (prid) END AS
STRING), ',', CASE WHEN (prtimesheetid is null) THEN (1L) ELSE (prtimesheetid)
END, ',', CASE WHEN (prassignmentid is null) THEN (1L) ELSE (prassignmentid)
END, ',', CASE WHEN (prchargecodeid is null) THEN (1L) ELSE (prchargecodeid)
END, ',', CASE WHEN (prtypecodeid is null) THEN ('') ELSE (CAST( prtypecodeid
AS STRING)) END, ',', CASE WHEN (practsum is null) THEN (CAST( 1 AS
decimal(38,20))) ELSE (practsum) END, ',', CASE WHEN (prsequence is null) THEN
(1L) ELSE (prsequence) END, ',', CASE WHEN (length(prmodby) is null) THEN ('')
ELSE (CAST( prmodby AS STRING)) END, ',', CASE WHEN (prmodtime is null) THEN
(TIMESTAMP'2017-12-08 00:00:00') ELSE (prmodtime) END, ',', CASE WHEN
(prrmexported is null) THEN (1L) ELSE (prrmexported) END, ',', CASE WHEN
(prrmckdel is null) THEN (1L) ELSE (prrmckdel) END, ',', CASE WHEN
(slice_status is null) THEN (1) ELSE (slice_status) END, ',', CASE WHEN
(role_id is null) THEN (1L) ELSE (role_id) END, ',', CASE WHEN
(length(user_lov1) is null) THEN ('') ELSE (CAST( user_lov1 AS STRING)) END,
',', CASE WHEN (length(user_lov2) is null) THEN ('') ELSE (CAST( user_lov2 AS
STRING)) END, ',', CASE WHEN (incident_id is null) THEN (1L) ELSE (incident_id)
END, ',', CASE WHEN (incident_investment_id is null) THEN (1L) ELSE
(incident_investment_id) END, ',', CASE WHEN (odf_ss_actuals is null) THEN (1L)
ELSE (odf_ss_actuals) END) (type: string)
Review comment:
Yes. The type of whole case expression is determined to be `bigint` as a
result `1` is cast to long.
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