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https://issues.apache.org/jira/browse/FLINK-8302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16634261#comment-16634261
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ASF GitHub Bot commented on FLINK-8302:
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xueyumusic commented on issue #6445: [FLINK-8302] [table] Add SHIFT_LEFT and
SHIFT_RIGHT
URL: https://github.com/apache/flink/pull/6445#issuecomment-425967961
Thanks for review, @twalthr . I also think that it would be best if calcite
could support << and >>, however I am not sure whether calcite could support
this very well for two reason, one is that it looks bitwise shift operation is
not sql standard and from
[HIVE-9859](https://issues.apache.org/jira/browse/HIVE-9859) discussion it
looks that ">>" has potential conflicts with nested complex type declaration in
hive which also uses calcite.
So maybe there are two ways:
1. As you said make calcite suport this.
2. Since
[Spark](https://spark.apache.org/docs/2.3.0/api/sql/index.html#shiftleft) and
[Hive](https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF)
both have shiftleft and shiftright, maybe we could also add this named as
shiftleft and shiftright...
Thanks
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> Support shift_left and shift_right in TableAPI
> ----------------------------------------------
>
> Key: FLINK-8302
> URL: https://issues.apache.org/jira/browse/FLINK-8302
> Project: Flink
> Issue Type: Improvement
> Components: Table API & SQL
> Reporter: DuBin
> Priority: Major
> Labels: features, pull-request-available
> Fix For: 1.7.0
>
> Original Estimate: 48h
> Remaining Estimate: 48h
>
> Add shift_left and shift_right support in TableAPI, shift_left(input, n) act
> as input << n, shift_right(input, n) act as input >> n.
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