postgresql optimization

Label: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 Debian operating system, and the rest of the operating system is not in the balance, but most of the content should apply. First, installation First, ins

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 Debian operating system, and the rest of the operating system is not in the balance, but most of the content should apply. First, installation First, install t

Double-click the installation program to install PostgreSQL and create a geographic database. 2. for PostgreSQL installation location, you can select your PostgreSQL installation path. The default installation path is C: ProgramFilesPostgreSQL9.23. in this step, you can select the path where your PostgreSQL data is sto

I checked the required components for installing Redmine and planned to build the database on PostgreSQL. At the same time, I also looked for some ldquo for installing Redmine in Ubuntu; experience on rd I checked the required components for installing Redmine and planned to build the database on PostgreSQL. At the same time, I also looked for some ldquo for installing Redmine in Ubuntu; experience on rd

Ubuntu 9.1 and postgresql are installed in the source code Gisgraphy is required for the project. However, gisgraphy3.0 only supports postgis1.5. therefore, only the old versions of posgresql and postgis can be installed. You can see postgresql supported by different versions of postgis from the support matrix diagram of postgis, I installed postgresql9.1.14. 1. Download postgresql9.1 version of the source

In this article, we use MySQL 4.0.2-alpha to compare with PostgreSQL 7.2, because MySQL 4.0.2-alpha starts to support the concept of transactions, therefore, this comparison is more advantageous for MySQL. We do not want to be just a performance test report, because at least from my perspective, stability and speed for a database do not represent everything. For a mature database, stability will certainly be increasingly available. With the rapid impr

Recently, the company asked a website to be revised and download the website programs and databases to programmers. The program file is very simple. Just download it by creating a compressed package. When I looked at the configuration file to view the database, I was dumpfounded. The database type was postgresql, and I had never heard of the Data Type before, let alone the operation. No way, you have to stick your head down. Baidu times to see how to

Tags: GRE method each query optimization semi compiler present represents voidThen read with me. PostgreSQL source Code (ix)--executor (the--scan node (top) of the query execution module), this chapter ends the remaining seven scan nodes. T_SubqueryScanState, T_FunctionScanState, T_ValuesScanState, T_CteScanState, T_WorkTableScanState, T_ForeignScanState, T_CustomScanState, 8.Subq

transaction;Use cluster when extracting multiple records from an index;Use limit when extracting part of a record from a query result;Use pre-compiled queries (Prepared query);Use analyze to maintain accurate optimization statistics;Regular use of VACUUM or pg_autovacuumDelete indexes first when making large amounts of data changes (then rebuilding indexes)2: Experience in the programCheck the program, whether the use of connection pool, if not used,

provided to those who need it. (see section 1.7) Price We are free for any purpose, including commercial and non-commercial purposes. You may add our code to your product without limitation, except for the BSD copyrights stated in the above copyright notice. There are three main areas that can improve the potential of PostgreSQL. The change in query mode, which mainly involves modifying the query m

Author: LengF PostTime: 2011-08-17 I believe that Mysql and MSSQL are the most common concerns. Of course, Oracle has also received much attention. However, some databases are "rare", such as DB2, Postgresql, Sybase ASE, and Informix. If you do not know the features of these databases, you cannot talk about injection and management. This article is only part of my study notes. I read the official documents and some online documents carefully when I me

I always wanted to make some contributions to PostgreSQL. Today I am free, so I wrote a tutorial on getting started with PostgreSQL 9.13... On deployment, you can move here...PHP 5.4.10 + Nginx 1.0.12 + PostgreSQL 9.1.3 source code compilation automated deployment of Version 2 Bytes ---------------------------------------------------------------------------------

PureftpdIt is an open source code software that is used on multiple types of Unix and complies with the GPL protocol. The following describes how he and PostgreSQL are used in combination. First, we should know what PostgreSQL is? PostgreSQL is an enhanced version of the PostgreSQL database management system, a prototy

Since MySQL was acquired by Oracle, PostgreSQL has gradually become the first choice for Open Source relational databases.This article introduces the installation and basic usage of PostgreSQL for the first time users. The following content is based on the Debian operating system. Other operating systems do not have the energy to take into account, but most of the content should be universally applied. Inst

Tags: distributed database? POSTGRES-XL: PostgreSQL-based open source extensible DB cluster The recent year the industry to the "IoE" more calls louder, many traditional enterprises have to go to the "IoE" program on the desktop. I always wonder what motivates these non-internet companies, such as banks, to do such things. Tall on the "self-control", "Revitalization of National Science and Technology" and other empty slogan first not to tube, the r

Background1 million database connections, absolutely crazy, how ordinary people do this kind of thing. Yes, what does it mean for a database to support 1 million connections? Can't I use a connection pool? In addition to holding a game of mind, can also understand the operating system layer of some knowledge, he le? WallBased on how I measured kernel resources for PostgreSQL, which I wrote a few days ago, we can assess how the operating system shou

PostgreSQL Compilation InstallationI. Introduction of PostgreSQLPostgreSQL is currently the most powerful open source database, supporting rich data types and custom types, and it provides a rich interface to easily extend its functionality.PostgreSQL has the following advantages over other databases:PostgreSQL is currently the most powerful open source databaseStable and reliable: PostgreSQL is the only op

Tags: postgresql command line do not enter password PostgreSQL database backup PostgreSQL database basic Operations PostgreSQL database export PostgreSQL Operations TutorialOne way to do a backup of the PostgreSQL database accordi

Tags: lib dha restart bz2 tables data boot init addressFirst, Introduction PostgreSQL is a very complex object-relational database management system (ORDBMS), and is currently the most powerful, feature richest and most complex free software database system. Some features don't even have a commercial database. The Berkeley-based database research program has now become an international development project and has a very wide range of users. Second, th

Label:First, Introduction PostgreSQL is a very complex object-relational database management system (ORDBMS), and is currently the most powerful, feature richest and most complex free software database system. Some features don't even have a commercial database. The Berkeley-based database research program has now become an international development project and has a very wide range of users. Second, the system environment System Platform: CentOS Rele