> Il giorno 21 ago 2023, alle ore 20:13, Peter J. Holzer <hjp-pg...@hjp.at> ha
> scritto:
>
> On 2023-08-21 17:27:20 +0200, Edoardo Panfili wrote:
>> The attended result was a sequence of ten equal values but this is the
>> actual result:
>> p: -1
>> p: -1
>> p: -1
>> p: -1
>> p: -1
>> p: -1.0
>> p: -1.0
>> p: -1.0
>> p: -1.0
>> p: -1.0
> [...]
>> 2023-08-21 11:51:50.633 CEST [1511] user@testdb LOG: execute <unnamed>: SET
>> extra_float_digits = 3
>> 2023-08-21 11:51:50.634 CEST [1511] user@testdb LOG: execute <unnamed>: SET
>> application_name = 'PostgreSQL JDBC Driver'
>> 2023-08-21 11:51:50.644 CEST [1511] user@testdb LOG: execute <unnamed>:
>> SELECT dim1 FROM number WHERE name='first'
>> 2023-08-21 11:51:50.648 CEST [1511] user@testdb LOG: execute <unnamed>:
>> SELECT dim1 FROM number WHERE name='first'
>> 2023-08-21 11:51:50.649 CEST [1511] user@testdb LOG: execute <unnamed>:
>> SELECT dim1 FROM number WHERE name='first'
>> 2023-08-21 11:51:50.650 CEST [1511] user@testdb LOG: execute <unnamed>:
>> SELECT dim1 FROM number WHERE name='first'
>> 2023-08-21 11:51:50.651 CEST [1511] user@testdb LOG: execute S_1: SELECT
>> dim1 FROM number WHERE name='first'
>> 2023-08-21 11:51:50.651 CEST [1511] user@testdb LOG: execute S_1: SELECT
>> dim1 FROM number WHERE name='first'
>> 2023-08-21 11:51:50.653 CEST [1511] user@testdb LOG: execute S_1: SELECT
>> dim1 FROM number WHERE name='first'
>> 2023-08-21 11:51:50.653 CEST [1511] user@testdb LOG: execute S_1: SELECT
>> dim1 FROM number WHERE name='first'
>> 2023-08-21 11:51:50.654 CEST [1511] user@testdb LOG: execute S_1: SELECT
>> dim1 FROM number WHERE name='first'
>> 2023-08-21 11:51:50.656 CEST [1511] user@testdb LOG: execute S_1: SELECT
>> dim1 FROM number WHERE name=‘first'
>
> Are these outputs from the same run?
Yes
>
> I notice that the output from the program switches after 5 queries from
> "-1" to "-1-0", but the logged query name switches after 4 queries from
> "<unnamed>" to "S_1”.
You’re right. It seem a JDBC side problem. I am doing some tests using
suggestions from pgsql-jdbc list.
What sounds strange to me is that switching from “mode_X” to “mode_Y” I obtain
different representation of the same value,
I know the value is semantically the same.. but… in some way I like to see.. "a
perfect postgresql env” (as it absolutely is)
Edoardo
