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https://issues.apache.org/jira/browse/IMPALA-11675?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17620006#comment-17620006
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Quanlong Huang commented on IMPALA-11675:
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FWIW, this is the commit that we switch from DOUBLE to DECIMAL for TPC-H:
https://github.com/cloudera/impala/commit/26805afdeb852fe585d43bd6ccd0b134d4d71999
> Use DATE types in TPC-H schema
> ------------------------------
>
> Key: IMPALA-11675
> URL: https://issues.apache.org/jira/browse/IMPALA-11675
> Project: IMPALA
> Issue Type: Task
> Components: Infrastructure
> Reporter: Quanlong Huang
> Priority: Critical
>
> The TPC-H standard uses DATE type in some columns like o_orderdate,
> l_shipdate, l_commitdate, l_receiptdate:
> https://www.tpc.org/tpc_documents_current_versions/pdf/tpc-h_v3.0.1.pdf
> These columns are currently defined as string types in our tests. It'd be
> nice to use DATE type instead.
> There is a discussion thread about swithing some date string columns to use
> DATE type:
> https://lists.apache.org/thread/kpq5mz77zrkrrk3wydjr40j6rz58hh8g
> CC [~gaborkaszab], [~csringhofer], [~laszlog]
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