It works.
Also consider views.
Just used this on a my db:
SELECT * FROM tblcus_customer
INNER JOIN
( SELECT * FROM tblcus_customer_status WHERE status_id > 0) AS b
ON tblcus_customer.status = b.status_id
You can even join with a function result.
Regards,
Luca.
2013/6/14 JORGE MALDONADO :
> I
Is it valid to specify a SELECT statement as part of a JOIN clause?
For example:
SELECT table1.f1, table1.f2 FROM table1
INNER JOIN
(SELECT table2.f1, table2.f2 FROM table2) table_aux ON table1.f1 =
table_aux.f1
Respectfully,
Jorge Maldonado
Tom Lane-2 wrote
> FWIW, I get fairly decent performance for cases like this in HEAD
> (at least with a GIN index; GIST seems much less able to do well with
> short prefixes).
Short or long prefixes seem to be equaly unfavorable. Even with the full
length of the words, but queried as prefix I get
Tom Lane-2 wrote
> FWIW, I get fairly decent performance for cases like this in HEAD
> (at least with a GIN index; GIST seems much less able to do well with
> short prefixes). What PG version are you testing?
Thank you Tom,
I'm testing on PG 9.1 on UbuntuServer 12.10, 64bit
I'll update to 9.2 t
rawi writes:
> And querying: FTS with prefix matching:
> SELECT count(a)
> FROM t1
> WHERE a_tsvector @@ to_tsquery('aaa:* & b:* & c:* & d:*')
> (RESULT: count: 619)
> Total query runtime: 21266 ms.
FWIW, I get fairly decent performance for cases like this in HEAD
(at least with a GIN index; GI
Hi
I tested the following:
CREATE TABLE t1
(
id serial NOT NULL,
a character varying(125),
a_tsvector tsvector,
CONSTRAINT t1_pkey PRIMARY KEY (id)
);
INSERT INTO t1 (a, a_tsvector)
VALUES ('o,p,f,j,z,j',
to_tsvector('o,p,f,j,z,j');
CREAT
