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https://issues.apache.org/jira/browse/CALCITE-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16007486#comment-16007486
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slim bouguerra commented on CALCITE-1769:
-----------------------------------------
upgrading to 1.12.0. solved the issue, FYI i found out that proper folding is
done by {code} org.apache.calcite.rex.RexUtil.ExprSimplifier {code}, in case of
you wonder where the folding of casts can take place.
> Push Filters down to druid when there a cast to numeric
> -------------------------------------------------------
>
> Key: CALCITE-1769
> URL: https://issues.apache.org/jira/browse/CALCITE-1769
> Project: Calcite
> Issue Type: Bug
> Components: druid
> Reporter: slim bouguerra
> Assignee: Julian Hyde
> Fix For: 1.13.0
>
>
> Currently if we have cast to numeric over literal filter will not get pushed.
> For instance query like {code}SELECT page from druid_table_1 WHERE page < 5
> group by page {code} from hive will introduce a cast over `5`.
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