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我是postgres新手.

我安装了postgres.app for mac.我正在玩psql命令,我不小心删掉了postgres数据库.我不知道里面是什么.

我正在制作一个教程:http://www.rosslaird.com/blog/building-a-project-with-mezzanine/

我被困在了 sudo -u postgres psql postgres

错误信息: psql: FATAL: role "postgres" does not exist

$ ps psql

/Applications/Postgres.app/Contents/MacOS/bin/psql

这是打印出来的 psql -l

                                List of databases
    Name    |   Owner    | Encoding | Collate | Ctype |     Access privileges     
------------+------------+----------+---------+-------+---------------------------
 user       | user       | UTF8     | en_US   | en_US | 
 template0  | user       | UTF8     | en_US   | en_US | =c/user                  +
            |            |          |         |       | user      =CTc/user      
 template1  | user       | UTF8     | …