So, according to your advice, I've looked at the IndexScan implementation
and here is what I came up with.
At execution time, if I find an operation expression involving a Param, the
param expression is evaluated with ExecEvalExpr (after being "initted" on
the fly), and then considered exactly the
Ronan Dunklau writes:
> Now, if I query my table like this (a subquery, joined on the outer query),
> what info should I be able to parse from the PlanState ?
> select name, (select max(value) from test t2 where t2.name = t1.name) as max
> from test t1;
> I don't really know much about postgresq
Hello.
Sorry if this is not the appropriate mailing list, but I understood that I
needed to post here first.
Warning: I'm not a native english speaker ;)
I'm implementing a Foreign Data Wrapper, and I'm trying to "optimize" it by
parsing the required columns and simple "quals" from the foreignsc
