這篇文章主要介紹了PostgreSQL 實現(xiàn)登錄及修改密碼操作，具有很好的參考價值，希望對大家有所幫助。一起跟隨小編過來看看吧。
PostgreSQL登錄
1、可通過客戶端pgAdmin III直接登錄
2、可通過命令行
命令：psql -h 10.10.10.10 -U user -d postgres -p 5570
-h：數(shù)據(jù)庫IP
-U：登錄用戶
-d：登錄的數(shù)據(jù)庫
-p：登錄端口
方法：進入postgreSQL的客戶端安裝目錄（我的安裝目錄：C:\Program Files\PostgreSQL\9.4\bin），執(zhí)行psql命令，其中\(zhòng)q表示退出數(shù)據(jù)庫
修改密碼
直接執(zhí)行以下sql即可修改密碼
1alter user pguser with password 'new password';
補充：PostgreSQL修改密碼認證方式
我就廢話不多說了，大家還是直接看代碼吧~
[postgres@postgres_vm ~]$ psql
psql (12.4)
Type "help" for help.
postgres=# show password_encryption ;
password_encryption
---------------------
md5
(1 row)
postgres=# select * from pg_authid where rolname='hr';
oid | rolname | rolsuper | rolinherit | rolcreaterole | rolcreatedb | rolcanlogin | rolreplication | rolbypassrls | rolconnlimit | r
olpassword | rolvaliduntil
-------+---------+----------+------------+---------------+-------------+-------------+----------------+--------------+--------------+--------------
-----------------------+---------------
16386 | hr | f | t | f | f | t | f | f | -1 | md566ad2e6b6f
adaa9fd11bfcab906e84c8 |
(1 row)
postgres=# set password_encryption to "scram-sha-256";
SET
postgres=# select * from pg_authid where rolname='hr';
oid | rolname | rolsuper | rolinherit | rolcreaterole | rolcreatedb | rolcanlogin | rolreplication | rolbypassrls | rolconnlimit | r
olpassword | rolvaliduntil
-------+---------+----------+------------+---------------+-------------+-------------+----------------+--------------+--------------+--------------
-----------------------+---------------
16386 | hr | f | t | f | f | t | f | f | -1 | md566ad2e6b6f
adaa9fd11bfcab906e84c8 |
(1 row)
postgres=# alter user hr with password 'Abcd1234';
ALTER ROLE
postgres=# select * from pg_authid where rolname='hr';
oid | rolname | rolsuper | rolinherit | rolcreaterole | rolcreatedb | rolcanlogin | rolreplication | rolbypassrls | rolconnlimit |
rolpassword | rolvaliduntil
-------+---------+----------+------------+---------------+-------------+-------------+----------------+--------------+--------------+--------------
-------------------------------------------------------------------------------------------------------------------------+---------------
16386 | hr | f | t | f | f | t | f | f | -1 | SCRAM-SHA-256
$4096:dF5WnZnKGXen0mtqZeWldA==$2K8sshkEarHox93X5hmIjKSPxHecXDkjZ56erjIf+dU=:FBbY3+22nVXF83LbfK6DHBK2QpakJA/0RRI3oXs4cdI= |
(1 row)
postgres=#
文章來源：腳本之家
來源地址：https://www.jb51.net/article/204344.htm
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