用户登陆后执行命令 show user执行效果 C:\Users\Administrator>sqlplus SQL*Plus: Release 11.2.0.1.0 Production on 星期六 4月 1 20:04:19 2017 Copyright (c) 1982, 2010, Oracle. All rights reserved. 请输入用户名: system 输入口令: 连接到: Oracle Database 11g Enterprise Edition Release 11.2.0.1...
1.查看 ubuntu提供的 PostgreSQL 版本:apt-cacheshowpostgresql 2.安装:sudo apt-getinstallpostgresql 3.或者: sudo aptinstallpostgresql postgresql-contrib 验证安装:sudo -u postgres psql -c "SELECT version();" 一旦安装完成, PostgreSQL 服务将会自动启动。使用psql工具通过连接 PostgreSQL 数据库并且打印它的版...
[COMMAND] execute command in shell or start interactive shell Query Buffer \e [FILE] edit the query buffer (or file) with external editor \g [FILE] send query buffer to server (and results to file or |pipe) \p show the contents of the query buffer 打印缓冲区 \r reset (clear) the ...
The given command returns the names of all schemas along with their owners. Example 9: Listing All Views Views are a frequently utilized concept in Postgres that allows us to simplify complex queries. To show the list of views, use the “\dv” command: \dv; The “\dv” command returns ...
\h [NAME] help on syntax of SQL commands, * for all commands \q quit psql Query Buffer \e [FILE] edit the query buffer (or file) with external editor \ef [FUNCNAME] edit function definition with external editor \p show the contents of the query buffer \r reset (clear) the query ...
, --help show this help, then exit Connection options: -d, --dbname=DBNAME database to connect to -u, --username=USERNAME database user name -p, --password password -C, --client-encoding client encoding (default: UTF-8) Display options: -E, --echo-internal display queries generated ...
Users toggling between MySQL and Postgres are often confused by the equivalent commands to accomplish basic tasks. Here's a chart listing some of the differences between the command line client for MySQL (simply calledmysql), and the command line client for Postgres (calledpsql). ...
[commands] show help on backslash commands \? options show help on psql command-line options \? variables show help on special variables \h [NAME] help on syntax of SQL commands, * for all commands Query Buffer \e [FILE] [LINE] edit the query buffer (or file) with external editor \...
\o [FILE] send all query results to file or |pipe \qecho [STRING] write string to query output stream (see \o) Informational (options: S = show system objects, + = additional detail) \d[S+] list tables, views, and sequences ...