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https://issues.apache.org/jira/browse/BEAM-9992?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17176724#comment-17176724
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Darshan Jani commented on BEAM-9992:
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Adding NullableCoder may not be right solution as from SQL we get
PCollectionList<Row> and schema already has correct nullable=true attribute. I
think problem may be SchemaCoder which is not able to handle byte[]and nulls
combination.Next step i am trying to write a test on schemaCoder and try to
fail it seperately. I am not getting much time due to my project constraints. I
will to get some time next week to dig deeper.
> Migrate BeamSQL's SET operators to Sets transforms
> --------------------------------------------------
>
> Key: BEAM-9992
> URL: https://issues.apache.org/jira/browse/BEAM-9992
> Project: Beam
> Issue Type: New Feature
> Components: dsl-sql, dsl-sql-zetasql
> Reporter: Darshan Jani
> Assignee: Darshan Jani
> Priority: P2
> Time Spent: 3.5h
> Remaining Estimate: 0h
>
> As par of [BEAM-9946|https://issues.apache.org/jira/browse/BEAM-9946] we have
> new Sets transforms for intersect,union and except.
> This jira is to use them to remove existing Set operators in BeamSQL code.
> Tasks:
> # Remove:
> [BeamSetOperatorRelBase.java|https://github.com/apache/beam/blob/master/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/rel/BeamSetOperatorRelBase.java]
> # use SetFns transforms from
> ##
> [BeamIntersectRel.java|https://github.com/apache/beam/blob/master/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/rel/BeamIntersectRel.java]
> ##
> [BeamMinusRel.java|https://github.com/apache/beam/blob/master/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/rel/BeamMinusRel.java]
> ##
> [BeamMinusRel.java|https://github.com/apache/beam/blob/master/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/rel/BeamMinusRel.java]
> ##
> [BeamUnionRel.java|https://github.com/apache/beam/blob/master/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/rel/BeamUnionRel.java]
> #
> Remove:[BeamSetOperatorsTransforms.java|https://github.com/apache/beam/blob/master/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/transform/BeamSetOperatorsTransforms.java]
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