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MySQL vs. PostgreSQL MysqlRelatively young, appearing for the first 1994 years. It claims to be the most popular open source database. MySQL is the M in the lamp (for web development packages, including Linux, Apache, and Perl/php/python). Most

From accidentally climbing the blog PostgreSQL is a powerful open-source relational database system. after more than 15 years of development, it has won an excellent reputation in terms of reliability, data integrity, and correctness. it runs on all

Recently prepared for PostgreSQL database development related knowledge, this article summarizes the PPT content through the blog record sharing, this essay's main content is to introduce the PostgreSQL database basic information, and how to use the

PostgreSQL is a powerful open-source relational database system. after more than 15 years of development, it has won an excellent reputation in terms of reliability, data integrity, and correctness. it runs on all major operating systems, including

Data type of PostgreSQL databasePostgreSQL supports a variety of data types, including integer types, floating-point types, Arbitrary precision values, datetime types, string types, binary types, Boolean types, and array types.1, Integer

Originally wanted to find the PostgreSQL database occupy Space Command found this blog, found that the provision of severalcommand is useful (but there are several senses that are sucks.) =), so he translated it over. In addition this article is 09,

PostgreSQL has a wide range of data types available. Users can use the CREATE type command to Add new data types to PostgreSQL. Table 8-1 shows all the built-in common data types. Most of the optional names listed in the aliases column are names

Document directory Supported Data Types   PostgreSQL is a widely used free and open source database. Compared with MySQL, PostgreSQL is more suitable for complicated enterprise computing tasks. MySQL is more widely used in the Internet field,

The SQL input consists of a series of commands . An order consists of a series of tokens , with a semicolon (";") End. The termination of the input stream also ends a command. Which tokens are valid depends on the syntax of the particular command.A