functions in mysql with examples

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 timestampdiff () functions are much more powerful than datediff () functions. datediff () can only calculate the number of days for the difference between two dates. Mysql common date addition and subtraction functions and instance

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

Original link:MySQL time and date function-Redfox-Blog ParkHttp://www.cnblogs.com/redfox241/archive/2009/07/23/1529092.html--------------------------------------------------------------------------------------------------------------- ---------------

mysql| Data | Database summary In this chapter, we will focus on how to work with the MySQL database using Structured Query Language (SQL). (2002-08-29-14:11:10) -------------------------------------------------------------------------------- By

For content-driven Web sites, the key to the quality of the design is the relational database. In this tutorial, we have built our database using the MySQL relational database management system (RDBMS). MySQL is a popular choice for Web site

MYSQL functions and mysql Functions Here is a list of all important MySQL functions. An example is provided to illustrate each function. MySQL Group By clause-MySQL group by statement and SQL aggregate function, used to Group result datasets using

MySQL common time function 1.1 get current date + time (date + time) function: now () 1.2 get current date + time (date + time) function: sysdate () the datetime function is similar to now (). The difference is that now () is obtained at the

  [Content Overview] This book is designed and implemented by a MySQL expert from Sun's Chinese Engineering Institute. The author divides the complex MySQL kernel into multiple functional subsystems to resolve various difficulties in understanding