Radian References Radian The radian (symbol rad ) is the unit for measuring angles, and is the standard unit of angular measure used in many areas of mathematics. The length...
PI() 函数说明 函数语法 示例 PI() 函数说明 PI() 返回数学常量 π (pi)。 函数语法 > PI () 示例 drop table if exists t1 ; create table t1 ( a int , b float ); insert into t1 values...
PI() Description Syntax Examples PI() Description PI() returns the value of π (pi). Syntax > PI () Examples drop table if exists t1 ; create table t1 ( a ...
PI() Description Syntax Examples PI() Description PI() returns the value of π (pi). Syntax > PI () Examples drop table if exists t1 ; create table t1 ( a ...