PostgreSQL

Collated the way PostgreSQL imports and exports related schemas.First, export:Export the schema table structure and data of CRM in his library (-n parameter):p g_dump-h 192.168.2.154 -P 5432-d his-n crm-f Test.sql Only export the schema table

PostgreSQL is an open-source database that has been widely used since MySQL was acquired, and it is a bold and innovative idea that companies in the market choose to use it, and PostgreSQL has many database features such as Orcale's sequence, There

When we use the PostgreSQL database, if a table is not constrained, it is likely that there will be several identical pieces of data, that is, duplicate data. As shown in the following:So what if we were to delete 2 of them? The first is that we can

Access to the Bin folder under PostgreSQL, you will see a lot of EXE files, this is the PostgreSQL built-in tools. Inside will find Pg_dump.exe. That's what we're actually using.Usage:1 . CD C:\Program files\postgresql\ 9.3 \ Bin 2 -H localhost-u

The drop TABLE statement for PostgreSQL is used to delete the index, rules, triggers, and constraints of the table definition and all its related data tables.You must use this command with caution, because once a table is deleted all the

A field can be assigned a default value. If a new row of data is created, and the values of some fields are not declared, the fields are populated with their respective default values. A data modification command can also explicitly require that a

About the use of PostgreSQLPlatform: Ubuntu 12.04 & 14.04Version: PostgreSQL 9.3.4 PostgreSQL installationSee website installation process Add userAfter initial installation, a database named Postgres and a database user named Postgres are generated

Original Entity freamwork 6 connect PostgreSQL databaseDevelopment environmentVS. Update 1 postgre Sql 9.4Use procedure1. Use NuGet to add references to Entityframework6.npgsql in your project2. Download and install the Npgsqlddexprovider program,:

I've been learning PostgreSQL recently, and here are some of the common commands that I've compiled for PostgreSQL. Connect to the database, the default user and database is PostgresPsql-u user-d dbname switch databases, equivalent to MySQL's use

This article solves the source code installation needs to check the system on whether the application depends on the software package to worry about the source code developers also have some help. Can be modified on the basis of the appropriate to

Top Benefits of PostgreSQL:1. PostgreSQL is completely free and BSD, and it's important that if you change PostgreSQL and then sell it, and nobody cares, it means that the PostgreSQL database will not be manipulated by other companies. Oracle

OS Environment Ubuntu12.04 32bitBecause a company's function is to use the Gdal ogr2ogr command to convert SHP data, you need to be able to insert data into PostGIS and SQLite.With the gdal1.11.0 source default installation, PostgreSQL and SQLite

First, prepare1. InstallationOmnipitr is written in Perl and can be downloaded directly.# git clone https://github.com/omniti-labs/omnipitr.git/opt/omnipitr/Initialized empty git repository in/opt/omnipitr /.git/remote:counting objects:2627,

PostgreSQL solves the tinyint data type problem in a system database, creating the data types that you need:CREATE DOMAIN tinyintAs smallintCONSTRAINT tinyint_check Check (value >= 0 and value ALTER DOMAIN tinyintOWNER to Postgres;COMMENT on DOMAIN

This article references: http://blog.csdn.net/kanon_lgt/article/details/5931522 http://blog.csdn.net/kanon_lgt/article/details/6220928 DB instance and schema: schema is the logical division of a DB instance. The database is segmented by schema

From MARSPRJ0. Compiling the Environment Linux:centos 5.5 gcc:4.1.2 1. Installing PostgreSQL1) Unzip the POSTGRESQL-9.1.7.TAR.BZ2#tar JXVF postgresql-9.1.7.tar.bz22) Enter the postgresql-9.1.7 directory after decompression#cd

A very interesting feature found in the use of PostgreSQL is that recursive queries are implemented for results that require similar tree-like structures. For example, we commonly used the company department of this data structure, generally we

Background introduction:PostgreSQL server execution on Redhat linux, IP: 192.168.230.128Client is installed on Windows XP with IP: 192.168.230.1Configuration method:1. Change the server/opt/postgresql/data/postgresql.conf file to#listen_address = '

Collect two solutions from the Internet: Confirm InstallationProgramIn the Chinese directory or temp directory, there is a Chinese path. If not, extract it first. Method 1: If the Windows 7 system is used, the administrator should run cmd.exe

Original article: Http://www.phpwell.com /? P = 174 PostgreSQL MySQL Service startup:1) # service PostgreSQL start2) #/etc/init. d/PostgreSQL start3) # Su-PostgreSQL$ Pg_ctl startPostgreSQL process number: 1210, 1207,