RE: Raw constraint & pg_relcheck.rcsrc

> -----Original Message-----
> From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
> 
> "Hiroshi Inoue" <Inoue@tpf.co.jp> writes:
> > Is pg_relcheck.rcsrc equivalent to the original raw constraint ?
> 
> To the best of deparse_expression()'s ability, it should be.
> I'm not real sure why we bother to store it, rather than deparsing
> rcbin on-the-fly on demand...
>

I'm looking at DefineRelation() in commands/creartinh.c.
In case of inheritance,constraints of super classes are
stored using their pg_relcheck.rcbin-s. It seems bad 
in case of multiple inheritance.  rcsrc-s may be available
instead.

Comments ?  

Regards.

Hiroshi Inoue
Inoue@tpf.co.jp