31 Jan
2016
31 Jan
'16
5:50 p.m.
Le 31/01/2016 17:14, Stephan Eggermont a écrit :
And you certainly found the key resource.
Thierry
On 31-01-16 15:21, stepharo wrote:
Then this is the best case for a language parser. Proven LALR/GLR to
start with. A working true grammar available. Maybe hacks inside the lexer.
So there is no work to be done. Almost none. Take that bison grammar,
understand a bit some of the bison quirks, reproduce and you're done.
Thierry
The main problem is that there is no PS/SQL BNF
available.
No BNF, but there are the bison rules:
https://github.com/postgres/postgres/blob/master/src/backend/parser/gram.y I found a
SQL92 but nothing else.
I found a lexer in antlr but nothing else.
Indeed, a common problem. The main RDBMS vendors agreed on the SQL 92
standard and then didn't implement it, to keep their customers locked
in. At least for PostgreSQL we can take a look at the source... Stephan
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