Hi,
I was going through Postgres documentation on multi-column indexes and came
across the recommendation at the bottom states: "Multicolumn indexes should be
used sparingly. In most situations, an index on a single column is sufficient
and saves space and time".
In my experience typical webapp
Hello,
I am trying to understand how the cost for a query involving indexes on
expressions is calculated. How is the statistics on the expression maintained?
For example Postgres documentation on 'Indexes on Expressions' mentions the
following example:
CREATE INDEX people_names ON people ((first
I am trying to understand how Postgres uses index and ran into a surprising
behavior if someone can help me with. I have a table like so:
CREATE TABLE testschema.employees ( employee_id integer not null,
first_name varchar(1000) not null, last_name varchar(1000) not null,
date_of_birth
Adrian,
The sequence is not set as a default on PK. The sequence is exclusively being
used by the ORM.
Thanks,
Shantanu
On Wednesday, August 19, 2020, 06:28:53 PM EDT, Adrian Klaver
wrote:
On 8/19/20 3:24 PM, Shantanu Shekhar wrote:
Please reply to list also.
Ccing list.
> Tha
Team,
I have a sequence definition in Postgres 9.6.11 like so:
CREATE SEQUENCE IF NOT EXISTS org.my_seq INCREMENT 1 MINVALUE 1 NO MAXVALUE
START 1 CACHE 20;
This sequence is used by a Java ORM framework to generate primary keys for one
of our tables. The initial numbers generated by this seq
Hello,
We are using Postgres 11.6 through AWS relational database service. As part of
its RDS service AWS offers automatic minor version upgrade. If we turn this
setting on the minor versions will get upgraded without us even knowing about
it. We are in a security sensitive vertical so we would
We are upgrading our Postgres instance from 9.6.11 to 10.11. Then as part of a
second upgrade we will go from 10.11 to 11.6. Currently (with 9.6.11) we are
using the 42.2.1 JDBC driver. I am trying to figure out the impact our database
upgrade will have on the JDBC driver version but I cannot fi
