Re: Using 9.6 client with 10.0 server

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От	Imre Samu
Тема	Re: Using 9.6 client with 10.0 server
Дата	11 января 2018 г. 19:50:03
Msg-id	CAJnEWwnki8vTibSSkiB4GOmGC5EwoQ+YY=cJxiO29Cixc=Uqhg@mail.gmail.com обсуждение исходный текст
Список	pgsql-hackers

Дерево обсуждения

>are there any drawbacks in using 9.6 client with 10.0 server?

A simple declarative partitioning example for the differences:

root@a5c0a6414f2e:/# psql

psql (10.1)

Type "help" for help.

test=# CREATE TABLE measurement (

test(# city_id int not null,

test(# logdate date not null,

test(# peaktemp int,

test(# unitsales int

test(# ) PARTITION BY RANGE (logdate);

CREATE TABLE

test=#

test=# CREATE TABLE measurement_y2006m02 PARTITION OF measurement

test-# FOR VALUES FROM ('2006-02-01') TO ('2006-03-01');

CREATE TABLE

test=# \d+

List of relations

--------+----------------------+-------+-------+---------+-------------

(2 rows)

Connecting from 9.6 - I can see only 1 table

root@cf0ddd0a1d58:/# psql

psql (9.6.6, server 10.1)

WARNING: psql major version 9.6, server major version 10.

Some psql features might not work.

Type "help" for help.

test=# \d+

List of relations

--------+----------------------+-------+-------+---------+-------------

(1 row)

Regards,

Imre

2018-01-11 14:15 GMT+01:00 Imre Samu <pella.samu@gmail.com>:

>are there any drawbacks in using 9.6 client with 10.0 server?

imho: you have to re-check the new improvements[1] :
some examples:
* "Declarative table partitioning" ( as I know, you can't see all information from psql9.6 )
* "Stronger password authentication based on SCRAM-SHA-256" ( if the security is the first priority )
scram-sha-256
The method scram-sha-256performs SCRAM-SHA-256 authentication, as described in RFC 7677. It is a challenge-response scheme that prevents password sniffing on untrusted connections and supports storing passwords on the server in a cryptographically hashed form that is thought to be secure.
This is the most secure of the currently provided methods, but it is not supported by older client libraries.
https://www.postgresql.org/docs/10/static/auth-methods.html
* changes in sequences ( "a new pg_sequence system catalog" ; "The output of psql's \d command for a sequence has been redesigned, too." )
* changes in "psql" Client Application

[1] https://www.postgresql.org/docs/10/static/release-10.html

Regards,
Imre

2018-01-11 11:14 GMT+01:00 Ronnj Grotto <ronnj.grotto@texa.com>:
Hello,
are there any drawbacks in using 9.6 client with 10.0 server?
Thank you in advance.

Ronnj Grotto
DATABASE ADMIN
ronnj.grotto@texa.com
Diretto: 0422.79.16.85
Interno: 1685

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