Yes, I've also added mergejoin to kwlist.h as unreserved_keyword. In order to build AST, I also keep a new node struct in planoperators.h and a new node tag inside nodes.h.
On 2 June 2011 15:49, Pavel Stehule
<pavel.stehule@gmail.com> wrote:
Hello
you should to add new keywords to
postgresql/src/include/parser/kwlist.h (depends on pg version)
attention - keywords must be in alphabet order
Regards
Pavel Stehule
2011/6/2 HuangQi <huangqiyx@gmail.com>:
> Hi,
> I'm doing a hacking project which hacks the gram.y file and some other
> so that postgres can execute some query plan language to run a particular
> plan. I did some modifications and try run it. It compiled and installed
> successfully. But when I was trying to run a MergeJoin operation with
> keyword MERGEJOIN, it says "ERROR: syntax error at or near 'MERGEJOIN'". It
> seems postgres didn't recognize this keyword. Is it caused by any error
> inside gram.y? Or how can I trace this error?
>
> --
> Best Regards
> Huang Qi Victor
>
--
Best Regards
Huang Qi Victor