Michael Paquier <michael@paquier.xyz> writes:
> Alias.aliasname is not qualified, so it means that we'd begin to
> assign the same query ID even if using two relations from two schemas
> depending on what search_path assigns, no?
Right. I'm arguing that that's good. The proposed patch already
obscures the difference between similar table names in different
(temp) schemas, and I'm suggesting that taking that a bit further
would be fine.
Note that if the tables we're considering don't have identical
rowtypes, the queries would likely jumble differently anyway
due to differences in Vars' varattno and vartype.
regards, tom lane