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From Ted Dunning <>
Subject Re: [PROPOSAL] Optiq
Date Thu, 01 May 2014 22:44:07 GMT
On Thu, May 1, 2014 at 10:19 PM, Kasper Sørensen <> wrote:

> - Can you explain or link to more information about the type inference you
> mention?

The type inferencing is used by Drill.

The problem is that strong typing is normally required to parse SQL
statements.  If you don't even yet know what columns exist, parsing a query
is difficult for normal SQL parsers. Generating good code for such
situations has to be delayed until type information is available.


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