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https://issues.apache.org/jira/browse/HIVE-4126?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Phabricator updated HIVE-4126:
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Attachment: HIVE-4126.D9105.1.patch
hbutani requested code review of "HIVE-4126 [jira] remove support for lead/lag
UDFs outside of UDAF args".
Reviewers: JIRA, ashutoshc
remove support for lead/lag UDFs outside of UDAF args
Select Expressions such as
p_size - lead(p_size,1)
are currently handled as non aggregation expressions done after all over
clauses are evaluated.
Once we allow different partitions in a single select list(Jira 4041), these
become ambiguous.
the equivalent way to do such things is either to use lead/lag UDAFs
with expressions ( support added with Jira 4081)
stack windowing clauses with inline queries. select lead(r,1).. from
(select rank() as r....)...
TEST PLAN
existing tests
REVISION DETAIL
https://reviews.facebook.net/D9105
AFFECTED FILES
ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java
ql/src/test/queries/clientpositive/leadlag.q
ql/src/test/queries/clientpositive/leadlag_queries.q
ql/src/test/queries/clientpositive/ptf.q
ql/src/test/queries/clientpositive/windowing.q
ql/src/test/results/clientpositive/leadlag_queries.q.out
ql/src/test/results/clientpositive/ptf.q.out
ql/src/test/results/clientpositive/windowing.q.out
MANAGE HERALD RULES
https://reviews.facebook.net/herald/view/differential/
WHY DID I GET THIS EMAIL?
https://reviews.facebook.net/herald/transcript/22065/
To: JIRA, ashutoshc, hbutani
> remove support for lead/lag UDFs outside of UDAF args
> -----------------------------------------------------
>
> Key: HIVE-4126
> URL: https://issues.apache.org/jira/browse/HIVE-4126
> Project: Hive
> Issue Type: Bug
> Components: PTF-Windowing
> Reporter: Harish Butani
> Assignee: Harish Butani
> Attachments: HIVE-4126.D9105.1.patch
>
>
> Select Expressions such as
> p_size - lead(p_size,1)
> are currently handled as non aggregation expressions done after all over
> clauses are evaluated.
> Once we allow different partitions in a single select list(Jira 4041), these
> become ambiguous.
> - the equivalent way to do such things is either to use lead/lag UDAFs with
> expressions ( support added with Jira 4081)
> - stack windowing clauses with inline queries. select lead(r,1).. from
> (select rank() as r....)...
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