MySQL ASCII() 函数

返回 "CustomerName" 中第一个字符的 ASCII 值：

SELECT ASCII(CustomerName) AS NumCodeOfFirstChar
FROM Customers;

定义和用法

ASCII() 函数返回特定字符的 ASCII 值。

ASCII( character)

Parameter	Description
character	Required. The character to return the ASCII value for. If more than one character is entered, it will only return the value for the first character

工作于：	从 MySQL 4.0 开始