| From: | Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Vadim Mikheev <vadim(at)krs(dot)ru> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers(at)postgreSQL(dot)org |
| Subject: | Re: [HACKERS] Re: Apparent bug in _make_subplan |
| Date: | 1999-06-18 16:47:35 |
| Message-ID: | 199906181647.MAA29280@candle.pha.pa.us |
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| Lists: | pgsql-hackers |
> Bruce Momjian wrote:
> >
> > > subselect.c uses varlevelsup as absolute level number only
> > > for correlation vars <--> params mapping, so why should it be
> > > source of bugs? SS_replace_correlation_vars replaces all
> > > correlation vars with parameters. Vars with absolute varlevelsup
> > > are in PlannerParamVar only. To identify correlation vars and
> > > to know is parameter already assigned to a var we obviously
> > > need in absolute level number.
> >
> > But the varlevelsup I pass in from the parser are relative to the
> > current level, not absolute.
>
> subselect.c takes it into account, computes absolute numbers
> and stores them in PlannerParamVar only...
Oh.
--
Bruce Momjian | http://www.op.net/~candle
maillist(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
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