2016-02-01 16:29 GMT+01:00 Anne Etien <anne.etien@univ-lille1.fr>:

Le 1 févr. 2016 à 08:09, stepharo <stepharo@free.fr> a écrit :

Where? because I spent a couple of hours I only found SQL92

http://savage.net.au/SQL/

SQL-92, -99, -2003

Excellent!
Thanks I will archive that.

I am not an expert in grammar, but I don’t see on this page the rules relative to function or even to select query.

First one, just a search on SELECT in the web page:

<query specification>    ::= 
         SELECT [ <set quantifier> ] <select list> <table expression>

Thierry

 

Anne

But the point wasn't that; what a LALR/LR parser gives you is a
grammar ambiguity and conflicts... PetitParser will happily take your
grammar ans you will only discover when parsing something that it
doesn't do what you would like.

(The reference citation of Aho and Ullman is ... it may be difficult
to determine what the language is).

So since you have a grammar, use LALR to check it.

But as I said we do not have it.

You do have a PEG grammar in your PetitParser efforts, since you have been working on it. From far, those grammars are very much like other grammars... just that the parser generator behave differently when you have conflicts and ambiguity.

Thierry
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