mysql sql functions

"Are you still using SQL-92?" "Is my opening question in" New SQL "speech. After I raised this question, the majority of the audience confessed that they were still using the technology 25 years ago. And if I ask who is still using Windows 3.1, and

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

MySQL: Summary of date functions and time functions bitsCN.com Published inWww.sqlstudy.com1. MySQL obtains the current date and time function 1.1 obtain the current date + time (date + time) function: now () mysql> select now();+-------------------

1. download MySql 1. download MySql Open http://www.mysql.com/downloads/mysql/#downloads download in browser My downloaded version is Red Hat 5 version of http://www.mysql.com/downloads/mirror.php? Id = 407552 Upload the file to the server, or

MySQL Study Notes 10 (MySQL functions)MySQL learning notes 10MySQL Functions MySQL database provides a wide range of functions. MySQL functions include mathematical functions, string functions, date and time functions, conditional judgment functions,

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

Differences between MySQL and SQL Server 1. mysql supports enum, set, and SQL server.2. mysql does not support nchar, nvarchar, and ntext3. the incremental Statement of mysql is AUTO_INCREMENT, while that of mssql is identity)4. mssql by default,

SQL has many built-in functions that can be used for counting and computation.Syntax of the functionThe syntax for the built-in SQL function is:SELECT function (column) from tableTypes of functionsIn SQL, there are several kinds of basic function

MySQL performance tuning and Architecture Design-Chapter 1 Performance Design-MySQL Replication and replication Optimization Chapter 1 scalability design-MySQL Replication Preface: MySQL Replication is a unique feature of MySQL. It can completely

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