类别：: 数值函数（三角函数）

RADIANS¶

将度转换为弧度。

语法¶

RADIANS( <input_expr> )

实参¶

input_expr: The value or expression to operate on. The data type must be FLOAT.

返回¶

This function returns a value of type FLOAT.

示例¶

Show the results of calling the RADIANS function:

SELECT RADIANS(0), RADIANS(60), RADIANS(180), RADIANS(360), RADIANS(720);

+------------+-------------+--------------+--------------+--------------+
| RADIANS(0) | RADIANS(60) | RADIANS(180) | RADIANS(360) | RADIANS(720) |
|------------+-------------+--------------+--------------+--------------|
|          0 | 1.047197551 |  3.141592654 |  6.283185307 | 12.566370614 |
+------------+-------------+--------------+--------------+--------------+