Thanks for showing interest. :)
well the parser has a 2 things to offer: 1. Auto completing syntaxes. 2. Figure out and notify the user about basic and a bit more specific syntax errors. Specific, like for a create table syntax, every colum must have a datatype defined and so on.
The parser can help if implemented on both client/server side in not sparing a query for no use on the server and the db can be utilised in that time for some usefull work(we can do this for atleast the silly mistakes but i am coding it for major). Well, i havnt pulled the request yet because i am testing it through various tests, will update soon.