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https://issues.apache.org/jira/browse/CALCITE-6480?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17870212#comment-17870212
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kate commented on CALCITE-6480:
-------------------------------
[~nobigo] I now understand your approach. It seems simpler and easier to read
than what I had in mind. Here is my
implementation[CALCITE-6480|https://github.com/apache/calcite/pull/3897]
> OracleDialect does not support CASE WHEN returning boolean
> ----------------------------------------------------------
>
> Key: CALCITE-6480
> URL: https://issues.apache.org/jira/browse/CALCITE-6480
> Project: Calcite
> Issue Type: Wish
> Components: core
> Reporter: kate
> Priority: Minor
> Labels: pull-request-available
>
> Our requirement is to use Calcite to translate queries into different
> dialects. During validation in the TPC-DS scenario, we found that {{Oracle}}
> does not support SQL statements like
> {code:java}
> SELECT * FROM xxx
> WHERE CASE WHEN a > 10 THEN b < 5 ELSE c > 0 END;{code}
> Therefore, we hope to remove such predicates at the dialect like Oracle.
>
>
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