postgresql online course

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databasepostgres=#Create user "Zhaofeng" with password ' 123456 ' nocreatedb;//NoteUser names are double-quoted to be case-sensitive, and passwords are not3. Create a database and specify the ownerpostgres=#CREATE DATABASE "TestDB" with owner= "Zhaofeng";4. Administrative commands on the external command line[Email protected]:~#- u postgres createuser -d-p test1//- d The user does not have the right to create a database,-p prompts for a password, and selects the management type y/n[Email protec

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"Zhaofeng" with password ' 123456 ' nocreatedb;Note that the user name should be in double quotation marks, to be case-sensitive, password not3. Create a database and specify the ownerpostgres=# CREATE DATABASE "TestDB" with owner= "Zhaofeng";4. Administrative commands on the external command line[Email protected]:~#-u postgres createuser-d-P test1-d The user does not have the right to create a database,-p prompts for a password, and selects the management type y/n[Email protected]:~#-u postgre

First, online installationapt-get install postgresql-9.4Second, the operating stateSystemctl Status PostgreSQLThe display works fine, but the default 5432 listening port is not startedThird, Reason searchSymptom: Various configuration files cannot be found, such as etc/postgresql/...Description: No correct initializationPerform initialization:/usr/lib/

BackgroundPostgreSQL logical backup, refers to online backup database data, DDL output as SQL statements, data can be in the form of SQL statements or fixed separators (row format) output. The backup does not affect the DML operation of the Backup object by other users. This article mainly introduces the logical backup tools provided by PostgreSQL, Pg_dump, Pg_dumpall, and the backup method of the copy co

Tags: PostgreSQL database Guide data Online Guide dataDirect data between 2 databases, using Pg_dump without producing intermediate files. Native execution exports data from the local library to the remote library -h127.0.0.1-U|-h-U postgres dbname Native execution import data from a remote database to a local library -h-U|-h127.0.0.1-U postgres dbname Copyright NOTICE: This article for Bo Master original a

subdirectories in the Pg_xlog directory [Email protected] data]# mkdir-p/opt/postgresql/9.3/data/pg_xlog/archive_status[[email protected] data]# chown-r Postgres:postgres /opt/postgresql/9.3/data/pg_xlog/archive_status/[[email protected] data]# chmod-r opt/postgresql/9.3/data/pg_xlog/archive_status/ In the $pgdata directory, create a recovery con

This text has been reprinted online, and some SQL statements are suitable for use in application systems. Some "reports" have a heavier feeling, mainly to review the former. This text has been reprinted online, and some SQL statements are suitable for use in application systems. Some "reports" are more likely to be used, mainly to review the former. 50 common SQL statements Student (S #, Sname, Sage, Ssex

Install MySQL: Yum Install Mysql-pythonBe sure to pay attention to the case of the egg. After the installation is complete, in Python Import MySQLdbNo error will prove the module installation is complete4: Database connectionBefore you connect to a database, verify the following: You have created the database TESTDB. In the TestDB database, you have created table EMPLOYEE The Employee table fields are first_name, last_name, age, SEX, and INCOME.

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