postgresql and

Date Operation1.operation current date and timeOracle Select sysdate from dual; PostgreSQL Select current_date;Select now (); Return date Time also includes time zone2. The acquisition subdomain of the operating timeOracle: Select to_char

System Information;#head-1/etc/issueCentOS Release 6.5 (Final) Install the postgresql9.3 version;#rpm-IVH http://yum.postgresql.org/9.3/redhat/rhel-6-x86_64/pgdg-centos93-9.3-1.noarch.rpm# yum Install postgresql93 postgresql93-server

Multi-version concurrency control technology is used by many database or storage engines, such as Oracle, ms SQL Server 2005 +, PostgreSQL, Firebird, InnoDB, Falcon, pbxt, Maria and so on. The new database storage engine uses multi-version instead

Collation With the development of the Internet and the increasingly active movement of Free Software, more and more people begin to apply various databases to their own network applications. As a result, a variety of database systems appear on the

Large evaluation order of databases such as MySQLPostgresSQL With the development of the Internet and the increasingly active movement of free software, more and more people begin to apply various databases to their own network applications. As a

Openerp Green Edition for Windows, run the source code, decompress the package immediately, and integrate python, PostgreSQL, and openerp.Software Version Openerp (the openerp version is updated from time to time, depending on the mood of the

mysql| Data | database sequence With the development of Internet and the activity of free software software, more and more people begin to apply various databases to their own network applications. Thus, a variety of database systems appear on the

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,

ArticleDirectory Preface Preface PostgreSQL 8.1 was launched. I plan to migrate some SQL server applications to PostgreSQL. The first thing I need to migrate is tables, therefore, we must first figure out the ing relationship between

Objective PostgreSQL is an object-oriented relational database, PostGIS is a spatial database plug-in based on PostgreSQL, which is mainly used to manage geo-spatial data. Therefore, in the field of GIS, PostgreSQL is widely used as spatial

If you cannot back up a MySQL or PostgreSQL database every day, you should back up the database once a week. For many enterprises, database information represents the website content and other important data. Therefore, it is very important to

Two methods and operating examples of PostgreSQL connection data Two methods and operational examples of PostgreSQL connection data. $PG = @pg_connect ("Host=localhost user=postgres password=sa Dbname=employes")Or Die ("can ' t connect to database.

 When installing postgreSQL, you may encounter a problem when executing configure The following error is reported: configure: error: readline library not found, but I installed it in the system. Readline package, 1. Environment Information 2.

Splits strings.MYSQL version. Because MYSQL does not support recursion and does not support returning results of the table type, the code is cumbersome. I use two functions and a stored procedure.-- Obtain the total number of delimiters. DELIMITER $$

Splits strings. MYSQL version. Because MYSQL does not support recursion and does not support returning results of the table type, the code is cumbersome. I use two functions and a stored procedure. -- Obtain the total number of delimiters. DE Splits

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Operating system version[Root@web103 ~]# More/etc/issueCentOS release 5.9 (Final)Kernel \ r \m[Root@web103 ~]# Uname-aLinux web103 2.6.18-348.el5 #1 SMP Tue 8 17:53:53 EST 2013 x86_64 x86_64 x86_64 gnu/linuxdownload corresponding PostgreSQL

This article focuses on the following aspects:Oracle,MySQLAndPostgreSQLFor comparison, we will start to introduce them one by one. Hybrid SQL (Optimization engine) SQL is the basis and most critical measure for your interaction with your database,

We know that MySQL currently does not support function indexing. Currently, most databases include PostgreSQL and Oracle. What is a function index? T_girl # demail_list; Tablepublic. email_listColumn | Type | Modifiers ---------- + ------------------

1. Some time ago, I translated an article titled changing your website from MySQL to PostgreSQL. in fact, I was more interested in the specific operation of converting the background database of an application from MySQL to PostgreSQL, and did not