On Tue, Dec 22, 2009 at 12:11 AM, msi77 ms...@yandex.ru wrote:
What are the ramifications of renaming the table (containing 8000
rows) and creating a view of the same name?
View does not admit ORDER BY clause, at least, Standard does not.
Postgres certainly allows it, but I don't think it
Hi,
I'd like to know if
select sum(qty) from t where status=37;
is constant.
qty is always 0.
Is there a way to skip examining further rows and return a result
ASAP?
--
Ivan Sergio Borgonovo
http://www.webthatworks.it
--
Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org)
To
2009/12/22 Ivan Sergio Borgonovo m...@webthatworks.it
Hi,
Hi :-)
I'd like to know if
select sum(qty) from t where status=37;
is constant.
qty is always 0.
Is there a way to skip examining further rows and return a result
ASAP?
With plain SQL, no.
With a user defined function
On Tue, 2009-12-22 at 13:35 +0100, Ivan Sergio Borgonovo wrote:
Hi,
I'd like to know if
select sum(qty) from t where status=37;
is constant.
qty is always 0.
Is there a way to skip examining further rows and return a result
ASAP?
SELECT SUM(object_version)
FROM date_x
WHERE owner_id =
In response to Ivan Sergio Borgonovo :
Hi,
I'd like to know if
select sum(qty) from t where status=37;
is constant.
qty is always 0.
Is there a way to skip examining further rows and return a result
ASAP?
I think no.
But you can create a new table with 2 columns: status
Does PG support CTE?
You can try it.
In response to Ivan Sergio Borgonovo :
Развернуть
Hi,
I'd like to know if
select sum(qty) from t where status=37;
is constant.
qty is always 0.
Is there a way to skip examining further rows and return a result
ASAP?
I think
On Tue, 22 Dec 2009 14:48:55 +0100
Filip Rembiałkowski plk.zu...@gmail.com wrote:
With plain SQL, no.
With a user defined function in PL/PgSQL, yes.
thanks to all.
I'm on 8.3 so no CTE.
I was hoping there was some way to write it in plain SQL.
I'm planning to wrap everything in a plpgsql
msi77 ms...@yandex.ru wrote:
Does PG support CTE?
Since 8.4 yes.
You can try it.
Sorry, but i don't know how a CTE can help in this case, can you explain
that?
Andreas
--
Really, I'm not out to destroy Microsoft. That will just be a completely
unintentional side effect.
Sorry, but i don't know how a CTE can help in this case, can you explain
I mean RECURSIVE CTE. You can check your condition on each iteration and stop
execution when condition is false.
Sergey
msi77 ms...@yandex.ru wrote:
Развернуть
Does PG support CTE?
Since 8.4 yes.
Развернуть
Hello
I found one ugly trick. You can multiply lines and SUM cons could be
replaced limit clause:
postgres=# select * from data;
a
---
3
2
1
4
2
3
(6 rows)
Then SELECT * FROM WHERE and stop when SUM(a) = n
then
postgres=# select generate_series(1,a) from data;
generate_series
On Wed, 23 Dec 2009 00:00:31 +0100
Ivan Sergio Borgonovo m...@webthatworks.it wrote:
On Tue, 22 Dec 2009 20:47:18 +0100
Pavel Stehule pavel.steh...@gmail.com wrote:
Hello
I found one ugly trick. You can multiply lines and SUM cons
could be replaced limit clause:
The trick is
On Wed, 23 Dec 2009 01:09:40 +0100
Ivan Sergio Borgonovo m...@webthatworks.it wrote:
On Wed, 23 Dec 2009 00:00:31 +0100
Ivan Sergio Borgonovo m...@webthatworks.it wrote:
On Tue, 22 Dec 2009 20:47:18 +0100
Pavel Stehule pavel.steh...@gmail.com wrote:
Hello
I found one ugly
2009/12/23 Ivan Sergio Borgonovo m...@webthatworks.it:
On Wed, 23 Dec 2009 01:09:40 +0100
Ivan Sergio Borgonovo m...@webthatworks.it wrote:
On Wed, 23 Dec 2009 00:00:31 +0100
Ivan Sergio Borgonovo m...@webthatworks.it wrote:
On Tue, 22 Dec 2009 20:47:18 +0100
Pavel Stehule
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