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https://issues.apache.org/jira/browse/BEAM-7929?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16903164#comment-16903164
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Neville Li commented on BEAM-7929:
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For column projection, {{BeamSqlTable}} already has potentially user defined
schema and can leverage that when setting up reader logic in {{buildIOReader}}.
There is no notion of filter predicate though, which could potentially be
inferred from SQL {{WHERE}} clause. Is there a ticket to track that? It's
probably big in scope and involving analyzing Calcite plan?
> ParquetTable.buildIOReader should support column projection and filter
> predicate
> --------------------------------------------------------------------------------
>
> Key: BEAM-7929
> URL: https://issues.apache.org/jira/browse/BEAM-7929
> Project: Beam
> Issue Type: New Feature
> Components: dsl-sql
> Affects Versions: 2.14.0
> Reporter: Neville Li
> Priority: Critical
>
> To leverage the performance improvements in Parquet.
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