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https://issues.apache.org/jira/browse/BEAM-5127?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17547234#comment-17547234
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Kenneth Knowles commented on BEAM-5127:
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This issue has been migrated to https://github.com/apache/beam/issues/19002

> [SQL] Avoid String parsing in BeamTableUtils
> --------------------------------------------
>
>                 Key: BEAM-5127
>                 URL: https://issues.apache.org/jira/browse/BEAM-5127
>             Project: Beam
>          Issue Type: Bug
>          Components: dsl-sql
>            Reporter: Anton Kedin
>            Priority: P3
>
> Looks like we're going through DateTime parsing on each projection: 
> https://github.com/apache/beam/blob/9319ce18ac625b239c8cdc1b32e2b697d83c2504/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/rel/BeamCalcRel.java#L125
> https://github.com/apache/beam/blob/9ef5e8690871737cccfe513ac00481320f662c18/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/schema/BeamTableUtils.java#L110
> We should avoid unnecessary casting and parsing



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