Henan College of Traditional Chinese Medicine
Course Design Report of MySQL Database Management
Title: Research and Implementation of MySQL Clusters
Completion date:2012January 1, December 31
Contents
1. Course Design overview 3
2. research
Generally, the entire string is used as the operation object, for example: search for a substring in a substring, obtain a substring, insert a substring at a certain position in the substring, and delete a substring.
Generally, the entire string is
Original: http://www.51sdj.com/phpcms/picture/2009/0711/picture_133.htmlFirst, MySQL gets the current date time function1.1 Get the current date + time (date + times) function: Now ()Mysql> Select Now ();+---------------------+| Now () |+------------
MySQL functions and Usage examples
String functions
ASCII (str)Returns the ASCII value of the first character of the string 'str' (0 is returned when 'str' is an empty string)Mysql> select ASCII ('2 ');-> 50Mysql> select ASCII (2 );-> 50Mysql>
MySQL常用指令,java,php程序员,数据库工程师必备。程序员小冰常用资料整理MySQL common commands (for reference)The most common display commands are:1. Display the list of databases.show databases;2. Display the data table in the library:Use MySQL;Show tables;3, display the
Generally, the entire string is used as the operation object, for example: search for a substring in a substring, obtain a substring, insert a substring at a certain position in the substring, and delete a substring. The required and sufficient
A string or string (string) is a finite sequence consisting of 0 or more characters. Generally recorded as s= ' a1a2 an ' (n>=0). It is the data type that represents text in the programming language.
A string is usually used as an action object,
Replace, concat, and cast character string functions in mysql need to export a personal information of job-seeking users. This information requires three-table joint query requirements: birthdate format: 1990.01.02 Database: Gender display: men and
Mysql commonly used date comparison and computing functions, mysql computing functions
Implementation of time comparison in MySql
Unix_timestamp ()
The unix_timestamp function accepts or does not use a parameter.
The return value is an unsigned
18th-Full-text SearchThis chapter will learn how to use the full-text search feature of MySQL for advanced data querying and selection.18.1 Understanding Full-Text SearchNot all engines support full-text search as described in Chapter 21st, MySQL
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