om
(
select
id,
usr,
code,
get_lines(code) as get_lines_data
from tbl
offset 0
)
as ss;
---
Philippe Lang
-Message d'origine-----
De : Tom Lane [mailto:[EMAIL PROTECTED]
Envoyé : jeudi, 12. août 2004 16:31
À : Philippe Lang
On Thu, 12 Aug 2004, Philippe Lang wrote:
> > > The problem now is that get_lines is being called twice per line.
> >
> > Is get_lines() defined as IMMUTABLE? Should it be?
>
> I have tried defining get_lines as "IMMUTABLE", or "WITH (iscachable)",
> but it keeps on getting called twice per line
"Philippe Lang" <[EMAIL PROTECTED]> writes:
> I wish there was a way to run the query like this:
> select
> id,
> usr,
> code,
> CAST(get_lines(code) as lines)
> from tbl;
You can do something like this:
regression=# create type complex as (r float8, i float8);
CREATE TYPE
regression=# c
> > The problem now is that get_lines is being called twice per line.
>
> Is get_lines() defined as IMMUTABLE? Should it be?
I have tried defining get_lines as "IMMUTABLE", or "WITH (iscachable)",
but it keeps on getting called twice per line in the following query...
select
id,
usr,
code
Philippe Lang wrote:
> The problem now is that get_lines is being called twice per line.
Is get_lines() defined as IMMUTABLE? Should it be?
/rls
--
:wq
---(end of broadcast)---
TIP 4: Don't 'kill -9' the postmaster
EMAIL PROTECTED] De la part de Philippe Lang
Envoyé : mercredi, 11. août 2004 08:41
À : [EMAIL PROTECTED]
Objet : Re: [SQL] function expression in FROM may not refer to other relations of same
query level
Hello,
> Whats wrong with just using CASE:
>
> select id, usr, code,
> case when
Hello,
> Whats wrong with just using CASE:
>
> select id, usr, code,
> case when code = 1 then 'A' else 'Z' end as line1,
> case when code = 1 then 'A' else 'Z' end as line2 from tbl;
The code I showed in my last mail was actually test code only. The logic
is more complicated, and I'm n
Philippe Lang wrote:
But the same query with a parameter returns an error:
select id, usr, code, line1, line2 from tbl, get_lines(code);
--> ERROR: function expression in FROM may not refer to other relations
of same query level
This is as expected and required -- you cannot refer to other FROM
Hello,
I'm trying to use the ROWTYPE return value of a plpgsql function in a
SELECT query. The test code is below.
The following query is accepted:
select id, usr, code, line1, line2 from tbl, get_lines(1);
idusr code line1 line2
--
1 one 1
