Ehab Galal <[EMAIL PROTECTED]> writes:
> I was wondering why do we need the Materialize node in the plan below when i
> explain a query?
It's cheaper to scan a materialized rowset many times than a raw table
--- we don't need to re-access shared memory nor re-check row visibility.
Greetings,
I was wondering why do we need the Materialize node in the plan below when i
explain a query?
1: QUERY PLAN = "Nested Loop (cost=10.99..24.34 rows=1 width=846)"(typeid
= 25, len = -1, typmod = -1, byval = f)
1: QUERY PLAN = " Join Filter: (("inner".cover)::text =
("
Hi all.
I'm seeing something fishy when trying to self-join two large tables and then
order by one column.
I have the following schema:
CREATE TABLE origo_person(
id SERIAL PRIMARY KEY,
firstname varchar,
lastname varchar,
created timestamp not null default now(),
created_by integer REFERENCES
Functionally it's the same. The difference is that you don't have to DECLARE a
variable for assembling your return value.
It's either
func(intext IN text, outtext OUT text returns NULL AS (
BEGIN
...
return;
END;
);
or
func(intext IN text) returns text AS (
DECL
