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Drill >> mail # dev >> the interest list

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Re: the interest list

On Sep 14, 2012, at 8:49 PM, Ted Dunning <[EMAIL PROTECTED]> wrote:

> Last night the following people signed up as being interested in working on
> different components of Drill:


> SQL front-end / optimization
> - Nausher Cholavaram - [EMAIL PROTECTED]

I'll like to add my name to this list. (I got chatting after the meeting, and the sign-up sheets were gone before I noticed.)

 - Julian Hyde - [EMAIL PROTECTED]

I can see a quick way to get a "hello world" query working (JDBC/SQL, talking to a simple table scan operator, e.g. a CSV file reader). I'd use Optiq for JDBC/SQL, add one operator (CsvScanner) and one planner rule (that maps a logical table scan to a call to the CsvScanner). CsvScanner would "implement" itself by generating an LLVM string (can someone provide an example of such a string?) and an execution system could take that string an run it. Metadata is all supplied programmatically (catalog.addTable("EMP")). Next step could be a DrQL parser, also accessed via JDBC.