Psql powerful, skills how to use only follow-up slowly supplemented, see a tool first see how to use Help$ psql #连接到数据库服务器, in which you can enter the appropriate SQL statement or PSQL command, psql command starts with \$ \l #列出所有的数据库$ \d #查看表的结构$
The command syntax for Psql is:psql [Options] [dbname [username]]The Psql command-line options and their meanings are listed in table 1-1. Use the following command to see a complete list of options for Psql:$ psql--helpTable 1-1 psql command-line
Common Psql commands
List tables in the database or (if declared) tables
TableIf the table name is declared with a wildcard ("*"), it lists the column/field
I. Description of the orderPsql is the interactive terminal of PostgreSQL, which is equivalent to Sqlplus in Oracle. When the command is executed to connect to the database, the default user and database are Postgressecond, the command parameters-C
D:\Program files\postgresql\9.3\scriptsThis is the default buffer position of the psql;Psql's command: D:\Program files\postgresql\9.3\scripts\runpsql.bat--Query buffer\e [file] [line] Edit query buffer (or file) using external editor\EF [FUNCNAME
\?-------------------------------------General\copyright display the use and release license terms for PostgreSQL\g [file] or; Execute the query (and write the results to a file or | pipeline)\gset [PREFIX] executes the query and saves the result to
PostgreSQL tutorial (18): client commands (2), postgresql tutorial
Pg_dump is a tool used to back up PostgreSQL databases. It can even perform a full and consistent backup when the database is being used concurrently without blocking
1, command line login database
There are two ways to execute the psql command directly under the system shell, but to enter the PSQL environment first and then connect to the database. Examples are given below:
(1) Direct login
Once you have created the database, you can access it:
Terminal program psql , which runs PostgreSQL interaction, allows you to interactively enter, edit, and execute SQL commands.
Create and manage databases using our existing
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