Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> In ExecTidReScan, we have the following:
> /* If we are being passed an outer tuple, save it for runtime
> key calc */
> if (exprCtxt != NULL)
> node->ss.ps.ps_ExprContext->ecxt_outertuple =
> exprCtxt->ecxt_outertuple;
> Is this dead code?
I don't think it's reachable at the moment, but we do have interest
in allowing joins using the TID value. See for example
http://archives.postgresql.org/pgsql-hackers/2009-01/msg01746.php
http://archives.postgresql.org/pgsql-performance/2007-04/msg00231.php
So I wouldn't be in favor of removing it.
regards, tom lane