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From Muhammad Gelbana <m.gelb...@gmail.com>
Subject Re: Extracting all columns used in a query
Date Mon, 03 Jun 2019 22:38:56 GMT
I don't konw if there is an API for that but visiting the  parsed/validated
SqlNode tree can do what you asked for.

Thanks,
Gelbana


On Tue, Jun 4, 2019 at 12:12 AM Adam Rivelli <asrivelli@gmail.com> wrote:

> Hi all,
>
> I'm trying to extract all of the (fully qualified) columns used by a query
> - similar to the information provided by
> RelMetadataQuery.getTableReferences()
> <
> https://calcite.apache.org/apidocs/org/apache/calcite/rel/metadata/RelMetadataQuery.html#getTableReferences-org.apache.calcite.rel.RelNode-
> >,
> but for column references. Is this possible to do using Calcite?
>
> I've been looking through the API docs and experimenting with the API, but
> I haven't found a straightforward way of doing this. Any help or
> information is appreciated.
>
> Adam
>

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