\s [FILE] display history or save it tofile\wFILEwritequery buffer tofileInput/Output \copy ... perform SQL COPY with data stream to the client host \echo[-n] [STRING]writestringto standard output (-nforno newline) \i FILE execute commands fromfile\ir FILE as \i, but relative to ...
声明psql 将执行一条查询字串, command,然后退出。这一点在 shell 脚本里很有用。 command必须是一条完全可以被服务器分析的查询字串(也就是说,它不包含 psql特有的特性), 或者是一个反斜杠命令。这样你就不会混合 SQL 和 psql 元命令。要想混合使用,你可以把字串定向到psql里,象这样: echo "select * fro...
\copy ... perform SQL COPY with data stream to the client host \echo [-n] [STRING] write string to standard output (-n for no newline) \i FILE execute commands from file \ir FILE as \i, but relative to location of current script \o [FILE] send all query results to file or |...
\c[onnect] {[DBNAME|- USER|- HOST|- PORT|-] | conninfo} connect to new database (currently “postgres”) \conninfo display information about current connection \encoding [ENCODING] show or set client encoding \password [USERNAME] securely change the password for a user Operating System \cd ...
Method 1: Connection With the Database Using Command Prompt We can use the command Prompt to connect to the database. Open thecmd. To make sure your psql is installed you can run “psql --version”. Running this will ensure the psql installation by retrieving the version of your psql. ...
CONNECTING TO A DATABASE 与一个数据库联接 psql是一个普通的 PostgreSQL 客户端应用。为了与一个数据库联接,你需要知道你的目标数据库, 服务器的主机名和端口号以及你希望以哪个用户的身份进行联接等信息。 我们可以通过命令行参数告诉 psql 这些信息,分别是 -d, -h,-p,和 -U。 如果有个参数不属于任何选项...
This is a two-part article for beginners who have installed the most advanced open source database, PostgreSQL, and are now looking to connect to it. Since terminal/command line and pgAdmin are the most favored ways for connecting to PostgreSQL, I explai
connect to new database (currently "aoldbs") \encoding [ENCODING] show or set client encoding \password [USERNAME] securely change the password for a user \conninfo display information about current connection Operating System \cd [DIR] change the current working directory ...
Connecting to a database Connection strings Thepsqlclient can use a connection string to connect to a database. The connection string is a single string that contains all the information needed to connect to a database. Tip Always wrap your connection string in single quotes to avoid the shell...
psql is a command-line interface used to perform various database tasks efficiently. For instance, using psql different commands can be executed to access, cre…