MySQL - 手册 - 12.4.2. 数学函数

[MySQL AB :: MySQL 5.1参考手册 :: 12. 函数和操作符:]

http://dev.mysql.com/doc/refman/5.1/zh/functions.html#mathematical-functions

[MySQL - 关键词]

mysql

[MySQL - 官方网站]

http://www.mysql.com/

[MySQL - 相关论坛]

http://database.board.newsmth.net/, 不针对MySQL

[MySQL - 下载]

http://dev.mysql.com/downloads/mysql/5.0.html

[MySQL - 语法]

CREATE TABLE, http://dev.mysql.com/doc/refman/5.1/zh/sql-syntax.html#create-table

SHOW TABLE STATUS, http://dev.mysql.com/doc/refman/5.1/zh/sql-syntax.html#show-table-status

日期和时间类型概述文档, http://dev.mysql.com/doc/refman/5.1/zh/column-types.html#date-and-time-type-overview

JOIN语法文档, http://dev.mysql.com/doc/refman/5.1/zh/sql-syntax.html#join

DATEDIFF(expr1,expr2)语法文档, http://dev.mysql.com/doc/refman/5.1/en/date-and-time-functions.html#function_datediff

MySQL如何优化LEFT JOIN和RIGHT JOIN文档, http://dev.mysql.com/doc/refman/5.1/zh/optimization.html#left-join-optimization

外键, http://dev.mysql.com/doc/refman/5.1/zh/introduction.html#ansi-diff-foreign-keys

使用AUTO_INCREMENT, http://dev.mysql.com/doc/refman/5.1/zh/tutorial.html#example-auto-increment

列类型, http://dev.mysql.com/doc/refman/5.1/zh/column-types.html

ALTER TABLE语法, http://dev.mysql.com/doc/refman/5.1/zh/sql-syntax.html#alter-table

12.4.2. 数学函数, http://dev.mysql.com/doc/refman/5.1/zh/functions.html#mathematical-functions