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https://issues.apache.org/jira/browse/CALCITE-2157?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16887758#comment-16887758
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Chris Baynes commented on CALCITE-2157:
---------------------------------------

Have just rebased this PR and made a couple of improvements. [~julianhyde] wdyt 
about merging this without the vm tests? I think this code makes Calcite better 
than without it - currently users of ClickHouse would see almost all queries 
fail if they just use the default dialect. With this PR lots of the features 
become available.

> ClickHouse dialect implementation
> ---------------------------------
>
>                 Key: CALCITE-2157
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2157
>             Project: Calcite
>          Issue Type: New Feature
>          Components: jdbc-adapter
>            Reporter: Chris Baynes
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> ClickHouse is a really fast columnar DBMS for OLAP: 
> [https://clickhouse.yandex/.|https://clickhouse.yandex/]
> It has a jdbc adapter and uses mostly standard sql, though there are 
> differences (e.g. join syntax, datatypes, function name case-sensitivity).



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