Comparison between PostgreSQL and MySQL
Features
MySQL
PostgreSQL
Instance
Run the MySQL Command (mysqld) to start the instance. One instance can manage one or more databases. One server can run multiple mysqld instances.
Characteristics
Mysql
PostgreSQL
Instance
Launch the instance by executing the MySQL command (MYSQLD). One instance can manage one or more databases. A single server can run multiple mysqld instances. An instance manager
PostgreSQL and PostGIS are installed in two main ways, from source installation and package management tool installation, recommended to install with package management tools, the following is the specific steps installed on the CentOS 7.1 X64
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.
From: http://bbs.chinaunix.net/thread-1688208-1-1.html
Features
MySQL
PostgreSQL
Instance
Run the MySQL Command (mysqld) to start the instance. One instance can manage one or more databases. One server can run
PostgreSQL is a powerful, high-performance object-relational database management system (ORDBMS) that uses the same licensing approach as BSD. PostgreSQL is great for large databases and has many advanced features. PostgreSQL supports many operating
first, the use of Pg_dump:Import and export of databases is one of the most commonly used features, each of which provides tools for this, such as Oracle's Exp/imp,informix Dbexp/dbimp,mysql mysqldump, and PostgreSQL provides a corresponding tool
Comparison of Oracle, mysql, sqlserver, and postgresql statements, postgresql and oracle
1. Paging
Oracle:SELECT * FROM (select a. *, rownum rn from (select T. * from sj_receiptinfo t WHERE t. taxno like concat ('%', CONCAT (?, '%') Order by t. id
In-depth interpretation of sequences in PostgreSQL and their related functions, and interpretation of postgresql
I. Introduction
A sequence object (also called a SEQUENCE generator) is a special single-row table created using create sequence. A
Tools:PostgreSQLOperating environment:Ubantu 14.0Data source:tpc-h DbgenTASK1:1. Download PostgreSQL (sudo install PostgreSQL), the results are as follows.TASK2:1. Follow the tutorial and go to the Dbgen folder to modify the makefile file. Then
First, installationcentos6.4 Server ip:192.168.220.131WINDOW7 Client ip:192.168.199.218Install PostgreSQL via the following instructions on the CentOS website http://www.postgresql.org/download/linux/redhat/It seems to have been installed, the
Compile and install PostgreSQL and osxpostgresql in Mac OSX
Originally, the official installation package was used. However, the installation package will create postgre, which is a bit uncomfortable on the login interface. After searching for a
An example is provided to briefly introduce arrays in PostgreSQL and postgresql.
PostgreSQL has many out-of-the-box data types, from standard digital data types, to geometric types, and even network data types. Although many people ignore these data
Install PostgreSQL and centos7postgresql on CentOS7
Install the postgresql Software Package
sudo yum install postgresql-server postgresql
Initialize db
sudo su - postgresinitdb -D /var/lib/pgsql/data
Start/stop a service
systemctl status
PostgreSQL Type
the default. NET type
specific types of offers
other. NET Types
bool
bool
Int2
Short
BYTE, sbyte, int, long, float, double, decimal, string
1. Environment preparation1.1 Win7 x64 system1.2 Postgresql-9.1.13-windows-binaries.zip and Mysql-5.5.46-win32.zip2. Installation process2.1 Postgresql-9.1.13 installation process① extract the Zip-format installation package to a folder, such as
theBucardoProject have released itsNagios Plugins for PostgreSQLAnd we can extract from them this nice view on order to check for table and indexbloat into ourPostgreSQLdatabases:Here is a script to check the usage of the tablespace:CREATE OR
PostgreSQL 9.2 added a native JSON data type, but didn ' t add much else. You ' ve got three options if your actually want to do something with it:
Wait for PostgreSQL 9.3 (or use the beta)
Use the PLV8 extension. Valid option, but more
just getting started with Python, it's really a good language to discover. The business unit requests that a table in a database be sent to the relevant department personnel mailbox regularly.In fact, the entire business needs are simple, it is not
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