PostgreSQL

The meaning and characteristics of the indexAn index is a separate database structure stored on disk that contains reference pointers to all records of the data, the PostgreSQL column type can be indexed, and the related column index is the best way

1. Use PgbouncerCan take advantage of Pgbouncer'sserver_idle_timeout参数Server_idle_timeout:if inch Time -Remove the previous comment to limit the automatic disconnection of the idle state beyond 60s. Of course, the connection mode set here is the

1. PostgreSQL 9.1 and below:SELECT pg_terminate_backend (pg_stat_activity.procpid) from pg_stat_activity WHERE = ' target_db ' and <> pg_backend_pid ();PostgreSQL 9.2 and above:SELECT pg_terminate_backend (pg_stat_activity.pid) from

Recently installed Linux system CentOs6.5, because of the project to use PostgreSQL, so installed 9.2 version. BecauseThere are few contact with Linux systems, so it's very laborious to start with. Now, the summary of these two days is as

1. Download the PostgreSQL source package and save it to a directory on the Linux operating system2. Extract the PostgreSQL source bundle: Tar zxvf postgresql-9.2.4.tar.gzor tar jxvf postgresql-9.2.4.tar.bz23. Switch to the directory you just

the implementation of a read-only table in PostgreSQL can be divided into two parts: the existing tables in the database before the command operation, and the newly created tables of the database after the command operation. In this article, we will

In Fedora 20, when I installed PG on 2014-8-27, the PG version was 9.3.5.1 I do not know whether it will be automatically updated by the PG Development group or something else, but it is generally the latest version after

LIMIT and OFFSET allow you to retrieve just a portion of the rows that is generated by the rest of the query: selectselect_listfromtable_expression[LIMIT {number| All}] [offsetnumber] If a limit count is given, no more than that many rows would be

Database backup:D:\Program files\postgresql\9.2\bin> pg_dump-h localhost-u postgres-c--column-inserts-f E:/dbname.sql dbnameDatabase recovery:D:\Program files\postgresql\9.2\bin> psql-h localhost-u postgres-f e:/dbname.sqlNote:D:\Program

The steps to configure the remote connection PostgreSQL database are simple and only need to modify the pg_hba.conf and postgresql.conf in the %postgresql_path%/data directory . First, modify pg_hba.conf: Configure access rights to the databaseAdd

[Email protected] tmp]# VI 2.sh#!/bin/bashbackup= "/home/bak"#RSYCN = "/usr/bin/rsync"#OPTIONS = "-rlhpogdts--delete"Date= ' Date +%y%m%d 'Log_file= "/var/log/backup/backupdb_$date.log"Server= "192.168.2.31"#1. PostgreSQLpg_dump=

PostgreSQL version: Psql (9.3.4)1, add a row of ALTER TABLE table_name ADD COLUMN_NAME datatype; 2. Delete a list of ALTER TABLE table_name drop column_name; 3. Change the data type of the column ALTER

The project needs to use Gisgraphy, Zennai gisgraphy3.0 only supports postgis1.5. So only old versions of Posgresql and PostGIS can be installed, from PostGIS's support The matrix diagram can see PostgreSQL supported by different versions of PostGIS,

Recently tried PostgreSQL 9.04 to share some of the pg_hba.conf configuration tips.Pg_hba.conf is a client authentication profile that defines how clients are authenticated.The following are common pg_hba.conf configurations: 12345678910

Recently used the To_char in PostgreSQL to convert numbers to strings, and now the example of the Generals network is collected as follows650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/42/6A/wKioL1PXWUrBdQSxAAQeY2_oZAM247.jpg "title=" to_

Original: http://blog.csdn.net/shuaiwang/article/details/17932941.PostgreSQL installation directory, go to the Data folder, open the postgresql.conf file, modify the listen_addresses, as follows#-Connection Settings-listen_addresses = ' localhost,123

According to the development of Java Mall, the development of JSP Mall and the developer of Java Mall products, PostgreSQL needs to do its own buffering technology in development, because there are many cases where I/O buffering is used for various

Reference Web page: http://www.php100.com/manual/PostgreSQL8/sql-set-transaction.htmlShow transaction isolation level; View Transaction Isolation Levelstestdb=# show transaction isolation level;Transaction_isolation-----------------------Read

First, installation When the PostgreSQL installation is complete, a user named Postgres and a database named Postgres are generated by default. You can use your own Psql.exe tool to log in. The Help information is as follows The commands to connect

In PostgreSQL, all the storage function requirements can be implemented using Plpgsql. It also supports the use of third-party languages to write, which depends on which aspect of your proficiency.However, it is important to note that plpgsql