"Hiroshi Inoue" <Inoue(at)tpf(dot)co(dot)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...
regards, tom lane