sql query utf 8

First, the concept of understanding: Unicode/ucs compressed Form--utf8 appeared, applying the official website's first sentence "UTF-8 stands for Unicode transformation Format-8." It is an octet (8-bit) lossless encoding of Unicode characters.

1. Encoding is the conversion of characters to a certain translation into bytes stored in memory or external memory, decoding is to translate the stored bytes into characters in a certain way.2.ASCII is a single byte, the highest bit total is 0,

Section I: UTF-8 and GBK Coding overviewUTF-8 (8-bit Unicode transformation Format) is a variable-length character encoding for Unicode, also known as the Universal Code, which contains the characters that all countries in the world need to use, is

There is no one-line solution. Care, attention to detail, and consistency.The UTF-8 in PHP is awful. Forgive me for the words.Currently, PHP does not support Unicode at low levels. There are several ways to ensure that the UTF-8 string can be

1. View the database character set?The database server character Set select * from Nls_database_parameters, which is derived from props$, is the character set representing the database.The client character set environment, select * from Nls_instance_

Modify character sets, including php pages, html headers, files, database character sets, and database connections.Address: http://blog.chinaunix.net/u1/41916/showart_470419.htmlI don't know if he wrote it, but I still indicated the source I found. 1

Requirements: Unattended data in the database, generate TXT text, automatically uploaded to the FTP server, and external customers for data docking;===============================================Step: 1 Write the stored procedure2 Creating a

The article "IP address-& gt; geographic location conversion evaluation" mentions that using the ip2addr function to directly read IP database files is the most efficient. compared with using the MySQL database to store IP data, SQL queries are the

Php evaluates several methods of dynamic conversion from gb encoding to UTF-8 encoding, and reads several methods of php's dynamic conversion from gb encoding to UTF-8 encoding, the article "IP address-Geographic location conversion evaluation"

In the evaluation of IP address-& gt; geographic position conversion, ip2addr function is the most efficient function to directly read IP database files. compared with MySQL database, SQL queries are the most efficient. However, the IP database file