On 2/9/16, Johannes wrote:
> Am 09.02.2016 um 00:56 schrieb Vitaly Burovoy:
>> On 2/8/16, Johannes wrote:
>>> Am 08.02.2016 um 21:50 schrieb Vitaly Burovoy:
On 2/8/16, Johannes wrote:
> increase speed,
Speed will be at least the same. In your case either you have to use
m
Am 09.02.2016 um 00:56 schrieb Vitaly Burovoy:
> On 2/8/16, Johannes wrote:
>> Am 08.02.2016 um 21:50 schrieb Vitaly Burovoy:
>>> On 2/8/16, Johannes wrote:
Am 08.02.2016 um 21:17 schrieb Vitaly Burovoy:
> Hmm. Could you clarify why you don't want to pass id from the first
> query
On 2/9/16, Marc Mamin wrote:
>
> Hi,
>
> is there a best practice to share data between two select statements?
>
> Hi,
> I didn't check the whole thread
Try it[1]. The thread is not so long (21 letters before yours) and it worth it.
> so forgive me if this was already proposed,
> but
On Tue, Feb 9, 2016 at 12:16 PM, Marc Mamin wrote:
>
> Hi,
>
> is there a best practice to share data between two select statements?
>
> Hi,
> I didn't check the whole thread so forgive me if this was already proposed,
> but maybe you could do something like:
>
> create temp table
Hi,
is there a best practice to share data between two select statements?
Hi,
I didn't check the whole thread so forgive me if this was already proposed,
but maybe you could do something like:
create temp table result2 (...)
query_1:
WITH cte as (select ..),
tmp as ( INSERT INTO
On Tuesday, February 9, 2016, Vitaly Burovoy
wrote:
> On 2/9/16, Harald Fuchs > wrote:
> > Johannes > writes:
> >
> >>> What the reason to execute all statements which return different
> >>> columns at once?
> >>>
> Saving roundtrips,
> >>>
> >>> In most cases they are not so big. Getting a
On 2/9/16, Harald Fuchs wrote:
> Johannes writes:
>
>>> What the reason to execute all statements which return different
>>> columns at once?
>>>
Saving roundtrips,
>>>
>>> In most cases they are not so big. Getting a bunch of duplicated data
>>> is wasting you network bandwidth and don't in
Johannes writes:
>> What the reason to execute all statements which return different
>> columns at once?
>>
>>> Saving roundtrips,
>>
>> In most cases they are not so big. Getting a bunch of duplicated data
>> is wasting you network bandwidth and don't increase speed.
>
> In my and your example
On 2/8/16, Johannes wrote:
> Am 08.02.2016 um 21:50 schrieb Vitaly Burovoy:
>> On 2/8/16, Johannes wrote:
>>> Am 08.02.2016 um 21:17 schrieb Vitaly Burovoy:
Hmm. Could you clarify why you don't want to pass id from the first
query to the second one:
select col1 from t1 where t
Am 08.02.2016 um 21:50 schrieb Vitaly Burovoy:
> On 2/8/16, Johannes wrote:
>> Am 08.02.2016 um 21:17 schrieb Vitaly Burovoy:
>>> On 2/8/16, Johannes wrote:
Am 08.02.2016 um 20:15 schrieb David G. Johnston:
> On Mon, Feb 8, 2016 at 12:05 PM, Johannes wrote:
>
>> Hi,
>>
>>>
On 2/8/16, Alban Hertroys wrote:
>
>> On 08 Feb 2016, at 20:05, Johannes wrote:
>>
>> select id, col1, col2, ... from t0 where id = (select max(id) from t0
>> where col1 = value1 and col2 = value2 and …);
>>
>> select col1 from t1 where t0_id = (select max(id) from t0 where col1 =
>> value1 and c
On 2/8/16, Johannes wrote:
> Am 08.02.2016 um 21:17 schrieb Vitaly Burovoy:
>> On 2/8/16, Johannes wrote:
>>> Am 08.02.2016 um 20:15 schrieb David G. Johnston:
On Mon, Feb 8, 2016 at 12:05 PM, Johannes wrote:
> Hi,
>
> is there a best practice to share data between two sele
> On 08 Feb 2016, at 20:05, Johannes wrote:
>
> select id, col1, col2, ... from t0 where id = (select max(id) from t0
> where col1 = value1 and col2 = value2 and …);
> select col1 from t1 where t0_id = (select max(id) from t0 where col1 =
> value1 and col2 = value2 and …);
select t0.id, t0.co
Am 08.02.2016 um 21:33 schrieb Vitaly Burovoy:
> On 2/8/16, Johannes wrote:
>>
>> Am 08.02.2016 um 20:32 schrieb Vitaly Burovoy:
>>> On 2/8/16, Adrian Klaver wrote:
Based on rough guess of the above, without seeing actual table schemas:
select id, t0.col1, t1.col1, col2, ... from
On 2/8/16, Johannes wrote:
>
> Am 08.02.2016 um 20:32 schrieb Vitaly Burovoy:
>> On 2/8/16, Adrian Klaver wrote:
>>> Based on rough guess of the above, without seeing actual table schemas:
>>>
>>> select id, t0.col1, t1.col1, col2, ... from t0 JOIN t1 ON t0.id =
>>> t1.t0_id where id = (select ma
Am 08.02.2016 um 21:17 schrieb Vitaly Burovoy:
> On 2/8/16, Johannes wrote:
>> Am 08.02.2016 um 20:15 schrieb David G. Johnston:
>>> On Mon, Feb 8, 2016 at 12:05 PM, Johannes wrote:
>>>
Hi,
is there a best practice to share data between two select statements?
Imaging fo
Am 08.02.2016 um 20:32 schrieb Vitaly Burovoy:
> On 2/8/16, Adrian Klaver wrote:
>> On 02/08/2016 11:05 AM, Johannes wrote:
>>> Imaging following situation: I want to receive two result sets from two
>>> tables, referring to a specific id from table t0 AND I try not to query
>>> for that specifi
On 2/8/16, Johannes wrote:
> Am 08.02.2016 um 20:15 schrieb David G. Johnston:
>> On Mon, Feb 8, 2016 at 12:05 PM, Johannes wrote:
>>
>>> Hi,
>>>
>>> is there a best practice to share data between two select statements?
>>>
>>> Imaging following situation: I want to receive two result sets from t
Am 08.02.2016 um 20:15 schrieb David G. Johnston:
> On Mon, Feb 8, 2016 at 12:05 PM, Johannes wrote:
>
>> Hi,
>>
>> is there a best practice to share data between two select statements?
>>
>> Imaging following situation: I want to receive two result sets from two
>> tables, referring to a specifi
x27;t subscribed to the list.
> -Original Message-
> From: Johannes
> To: pgsql-general@postgresql.org
> Sent: Mon, 08 Feb 2016 11:07
> Subject: [GENERAL] execute same query only one time?
>
> Hi,
>
> is there a best practice to share data between two select stat
On 2/8/16, Adrian Klaver wrote:
> On 02/08/2016 11:05 AM, Johannes wrote:
>> Imaging following situation: I want to receive two result sets from two
>> tables, referring to a specific id from table t0 AND I try not to query
>> for that specific id a second time.
>
>> Table t0 returns 1 row and tab
On 2/8/16, Johannes wrote:
> Hi,
>
> is there a best practice to share data between two select statements?
>
> Imaging following situation: I want to receive two result sets from two
> tables, referring to a specific id from table t0 AND I try not to query
> for that specific id a second time.
>
>
On 02/08/2016 11:05 AM, Johannes wrote:
Hi,
is there a best practice to share data between two select statements?
A join:
http://www.postgresql.org/docs/9.4/interactive/sql-select.html
Search for:
join_type
Imaging following situation: I want to receive two result sets from two
tables, re
Not an expert, but I would try a temporary unlogged table.
Sent from my android device.
-Original Message-
From: Johannes
To: pgsql-general@postgresql.org
Sent: Mon, 08 Feb 2016 11:07
Subject: [GENERAL] execute same query only one time?
Hi,
is there a best practice to share data
On Mon, Feb 8, 2016 at 12:05 PM, Johannes wrote:
> Hi,
>
> is there a best practice to share data between two select statements?
>
> Imaging following situation: I want to receive two result sets from two
> tables, referring to a specific id from table t0 AND I try not to query
> for that specifi
Hi,
is there a best practice to share data between two select statements?
Imaging following situation: I want to receive two result sets from two
tables, referring to a specific id from table t0 AND I try not to query
for that specific id a second time.
Table t0 returns 1 row and table t1 return
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