PostgreSQL

In this article, we use the MySQL 4.0.2-alpha to compare with PostgreSQL 7.2, because the MySQL 4.0.2-alpha begins to support the concept of the transaction, so this comparison is more advantageous for MySQL. We don't want to be just a performance

Seven, Pg_dump: Pg_dump is a tool for backing up the PostgreSQL database. It can even make a full, consistent backup when the database is being used concurrently, without blocking access to the database by other users. The dump format generated by

After a lot of groping experiments I finally succeeded in achieving the SSL certificate authentication function, so I think this time I want to record these steps for future reference. For security and convenience reasons, I want to sign a client's

I have a colleague today. After configuring PostgreSQL as the hive metabase, the following error message is encountered when running hive sql: Copy Code code as follows: caused By:metaexception (Message:got

The following will illustrate the use of Apache+php3+postgresql as a web-based database platform for installation and configuration methods. More about Apache, PHP3, and PostgreSQL can be found in the software's accompanying documentation, Linux

Server|sqlserver JDBC-ODBC configuration or configuring SQL Server with DataSource although it is convenient to look at the link, it is difficult to handle the result set to truly achieve the JDBC2 standard, so you want to be a little "professional"

As for the installation of knowledge, here is not much to say, to pay attention to the two points is: 1. Install Tomcat (Jakarta-tomcat-5.0.28.exe) 2. Installation of PostgreSQL (Postgresql-8.0-beta1-20040809.msi) (7.0 and 8.0 versions are

I. SQL commandII. PostgreSQL client Application Clusterdb --Cluster a PostgreSQL database createdb --Create a new PostgreSQL database Createlang --Installing a PostgreSQL process language CreateUser --Define a new PostgreSQL user account

1. Mathematical FunctionsMathematical functions are mainly used to deal with numerical data, the main mathematical functions are: absolute value function, trigonometric function (including sine function, tangent function, cotangent function, etc.),

When you use the PostgreSQL database, when you enter Chinese, you encounter an error "Error:invalid byte sequence for encoding" UTF8 ": 0xd6d0" because the client character set is not configured correctly.The cause of the problem:By default,

one of the ways that PostgreSQL master-slave replication is implemented:Standby-based asynchronous stream replication, which is a nice feature provided after the postgresql9.x version (2010.9), similar functionality is available in Oracle after 11g

Log in to the PostgreSQL database consolepsql 数据库名Login successful Display[zpf@kevin ~]$ psql postgrespsql (9.4.1)Type"help"for help.postgres=#Create DATABASE User xxxCREATE USER xxx WITH PASSWORD ‘xxxxxx‘;Create a database yyy and specify all of

Suddenly found that the company Tableau server database size increased sharply, so decided to directly connected to the database troubleshooting. The process is recorded as follows: Finally, a http_requests table was found to be large (7G), which

Since all relevant report data of AEP EPM (Application run log, call list, session list), configuration information, etc. exist on the local PostgreSQL, understand the basic usage of PostgreSQL and help to improve the daily operation and maintenance

First, IntroductionPostgreSQL 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

Transferred from: http://blog.csdn.net/qpengyanting123/article/details/7497556(1) User utility program:Createdb Create a new PostgreSQL database (and the SQL statement: Create DATABASE is the same)CreateUser Create a new PostgreSQL user (and SQL

All messages sent by the PostgreSQL server are given a five-character error code that follows the custom of the SQL "SQLSTATE" code. Apps that need to know what error conditions are occurring should usually test the error code instead of the text

MySQL's disadvantage relative to PostgreSQL: Mysql PostgreSQL The most important engine InnoDB is very early in the control of Oracle Corporation. Currently, the entire MySQL database is controlled by Oracle.

(1) User PracticalityProgram: Createdb creates a new PostgreSQL database (same as SQL statement: Create Database) Createuser creates a new PostgreSQL user (same as SQL statement: create user) Dropdb deletes a database Dropuser: delete a user

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