PostgreSQL

1,DEPLOYBYRUIYINSRPM-IVH http://yum.postgresql.org/9.4/redhat/rhel-6-x86_64/ Pgdg-centos94-9.4-1.noarch.rpmpostgresql Yum Repo version yum.postgresql.org/repopackages.php2,repository contains many Different packages including third party addons. The

Listen_addresses: #指定数据库用来监听客户端连接的TCP/IP address, the default is the value is *, indicating that the database will be on the computer running the data on all IP addresses on the machine to listen to user requests, can be written as the name of the

1. Check the database size:Select Pg_database_size (' log_analysis ');(Single Step mode:verify command) *******************************************select pg_database_size ( ' log_analysis ' ); return return to cancel) ********************------------

Create a new instance, (the 9.1 version used below, if it is a different version, you can replace 9.1 with the version number)sudo/usr/bin/Pg_createcluster-U postgres # #系统用户-D/VAR/LIB/POSTGRESQL/9.1/D1 # #实例目录, version-S/VAR/RUN/PGD1 # #--local

先行输入：psql gis\d 显示当前数据表 List of relations Schema | Name | Type | Owner --------+--------------------+-------+---------- public | geography_columns | view | postgres public | geometry_columns | table | gis public |

Recently help QA colleagues to create a PostgreSQL test server process encountered a few problems, listed as a backup, but also for future use as a reference.1. PostgreSQL default system Yum source only version is 8.4.18-1.el6_4, and I need to

Recently found a table of PostgreSQL (collectively referred to as Test table) to 67G size, have to repartition, the following record the steps:Preface, view data table structure (the table structure must be fictitious)CREATE TABLE Test ( ID integer

1. Use of usingUsing is an abbreviated concept: it receives a comma-delimited list of field names that must be common to the join table and eventually form a join condition that indicates that the field pairs must be the same.The using (A, B, c) is

Yesterday encountered a wonderful problem, you need to add a regular expression in the where condition, take a try attitude, look at PostgreSQL, found that can indeed support the regular, for example:Select from where ' ^[a-h] ' --matches the

1. View the names of all tablesPostgresql,greeplum, if the database is thousands of miles away, the data volume is huge, the network speed is not good, use the Pgadmin client, then you spend most of the time in waiting ...The use of pgadmin query is

PostgreSQL memory allocation is mainly controlled by shared_buffers, Temp_buffers, Work_mem, maintenance_work_mem parameters.shared_buffers can also be called a shared buffer, and PostgreSQL will first read the data from the disk into memory, then

backgroundOriginal link: http://blog.csdn.net/ordeder/article/details/31768749Looking at the design of several memory pools, such as python,stl, there are basically two kinds of structures for memory management:1.block, which is the memory block, is

Since MySQL was acquired by Oracle, PostgreSQL has become the first choice for open-source relational databases.This article describes the installation and basic usage of PostgreSQL for first-time users to get started. The following is based on the

Bak_dir="/home/backupfiles/db" #Backup PathPg_dir="/usr/local/pgsql/bin" #Pgsql PathDate_dir= ' Date +%y/%m/%d ' dbname="Database name"Pgpassword="Super User Postgres password"Export Pgpassword>/dev/null 2>&1mkdir-P${bak_dir}/${date_dir}>/dev/null 2>

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

Copy codeThe Code is as follows: function getarray_postgresql ($ arraystr) { $ Regx1 = '/^ {(. *)} $ /'; $ Regx2 = "/\" (\\\\\\\|\\\\\ "| [^ \"]) +) \ "| [^,] + /"; $ Regx3 = '/^ [^ "]. * $ | ^" (. *) "$ /'; $ Match = null; Preg_match ($ regx1,

1. Use EXPLAINThe EXPLAIN command can view the execution plan, which has been introduced in the previous blog. This method is our most important debugging tool. 2. update statistics used in the execution plan in a timely manner Statistics are not

If you want to install PostgreSQL for a project, the installation file of .exe is downloaded to run. At the beginning, it was very smooth. I know that the installation was complete and there was a damn dialog box during database initialization

In the process, npostgres.exe (this is normal, see the official documentation), but one is always full of CPU (because the local machine is dual-core and occupies 50% of the resources ). The built-in pgAdmin III connection will die. No answers are

This document describes how to install the software in Gentoo Linux by using postgreSQL as an example, and summarizes the USE flag. Run emerge-pv postgresql-server. [Plain]View plaincopyprint? # Emerge-pv postgresql-server These are the