On Thu, Jul 05, 2012 at 11:28:25AM -0700, Alex wrote:
> I need to parse out where statements for sql in an app so that the fields 
> can be properly mapped to existing database columns and the statement 
> parameterized, etc.  Can anyone suggest an existing node module to 
> accomplish this?  Basically, if given a string such as:
> 
> user.name = 'dsdsadadas' and (companyid = 1 or user.companyid = 2) and ( 
> true = user.isactive)
> 
> I want to break it out into its expression counterparts and know that 
> user.name, companyid, user.isactive and user.companyid were all column 
> identifiers.

I've written an SQL parser in CoffeeScript for a relational database interface
library project of mine, Relatable. You might be able to do something with that.

https://github.com/bigeasy/relatable

There's an SQL grammar for Peg JS. Haven't used it, but looks nifty.

https://github.com/steveyen/sqld3

--
Alan Gutierrez - @bigeasy

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