3.1415927

---------

--------

返回n1的n2次方

---------

----------------------------

7.38905612.7182818

weather

102

02

20.cos

23.floor

返回指定值的绝对值

wether

102427

返回一个n1除以n2的余数

sql>selectln(1),ln(2),ln(2.7182818)fromdual;

sql>selectmod(10,3),mod(3,3),mod(2,3)fromdual;

返回一个给定数字的余弦

返回一个数字的正弦值

30.sin

ln(1)ln(2)ln(2.7182818)

---------------

4

abs(100)abs(-100)

---------

sql>selectlog(2,1),log(2,4)fromdual;

取数字n的符号,大于0返回1,小于0返回-1,等于0返回0

cosh(20)

16.acos

-1

---------------------

sql>selectatan(1)fromdual;

返回一个数字的对数值

31.sigh

100100

power(2,10)power(3,3)

acos(-1)

------------------

leading剪掉前面的字符

14.trim(‘s‘from‘string‘)

给反余弦的值

56-5555-55

返回一个数字反余弦值

28.round和trunc

照指定的度行舍

sql>selectsin(1.57079)fromdual;

sql>selectabs(100),abs(-100)fromdual;

2345

sql>selectfloor(2345.67)fromdual;

.52359878

sql>selectcos(-3.1415927)fromdual;

.78539816

本章尚未读完,请击下一页继续阅读---->>>

18.atan

-------------------------------

24.ln

给反正弦的值

15.abs

atan(1)

xm

sql>selectasin(0.5)fromdual;

19.ceil

--------------

25.log(n1,n2)

mod(10,3)mod(3,3)mod(2,3)

---------

------------------

1

trailing剪掉后面的字符

sql>selectceil(3.1415927)fromdual;

weather‘);

sql>selectacos(-1)fromdual;

sql>selectpower(2,10),power(3,3)fromdual;

21.cosh

sql>selectcosh(20)fromdual;

asin(0.5)

返回一个数字e的n次方

返回一个数字的反正切值

sin(1.57079)

sql>selectround(55.5),round(-55.4),trunc(55.5),trunc(-55.5)fromdual;

exp(2)exp(1)

对给定的数字取整数

返回大于或等于给数字的最小整数

26.mod(n1,n2)

sign(123)sign(-100)sign(0)

1-10

cos(-3.1415927)

round(55.5)round(-55.4)trunc(55.5)trunc(-55.5)

242582598

ceil(3.1415927)

log(2,1)log(2,4)

---------------

------------

---------------------------

返回一个以n1为底n2的对数

--

27.power

17.asin

0.69314718.99999999

floor(2345.67)

----------------------------------------------

返回双曲正弦的值

如果不指定,默认为空格符

29.sign

22.exp

sql>selectsign(123),sign(-100),sign(0)fromdual;

------------------

sql>selectexp(2),exp(1)fromdual;

sql>selectsin(20),sinh(20)fromdual;

sin(20)sinh(20)