02.03.2016 15:59, Atri Sharma wrote:

> BTW I tried navigating the codebase to find the parser and rewriter,
> along with table commands, but somehow got lost in the structure.
>
> Can anyone please point me to it?

/dsql/parse.y is the grammar. It generates execution nodes as class 
instances that are implemented inside the /dsql directory, grouped 
inside ExprNodes.*, StmtNodes.*, DdlNodes.*, etc.

These classes encapsulate [almost] everything requires to compile, 
rewrite (if possible) and execute them. Optimization is performed 
separately, but just a few nodes need this step.


Dmitry


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