返回一个以n1为底n2的对数

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19.ceil

sin(1.57079)

weather

2345

0.69314718.99999999

20.cos

7.38905612.7182818

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

1-10

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exp(2)exp(1)

sql>selectceil(3.1415927)fromdual;

sql>selectfloor(2345.67)fromdual;

15.abs

.52359878

返回一个数字的反正切值

1

30.sin

02

trailing剪掉后面的字符

102

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--

---------

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

-1

--------

24.ln

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

返回双曲正弦的值

17.asin

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

返回一个数字的对数值

56-5555-55

wether

返回一个n1除以n2的余数

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给反正弦的值

给反余弦的值

25.log(n1,n2)

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

照指定的度行舍

3.1415927

cosh(20)

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返回指定值的绝对值

16.acos

xm

sql>selectcos(-3.1415927)fromdual;

102427

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

---------

23.floor

sql>selectatan(1)fromdual;

acos(-1)

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

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

sql>selectsin(1.57079)fromdual;

22.exp

28.round和trunc

21.cosh

29.sign

27.power

100100

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

返回大于或等于给数字的最小整数

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

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

对给定的数字取整数

4

返回一个数字反余弦值

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

---------

返回一个数字的正弦值

sin(20)sinh(20)

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

sql>selectcosh(20)fromdual;

如果不指定,默认为空格符

返回n1的n2次方

atan(1)

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

leading剪掉前面的字符

返回一个给定数字的余弦

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

sql>selectacos(-1)fromdual;

.78539816

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

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

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

sql>selectasin(0.5)fromdual;

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

weather‘);

242582598

cos(-3.1415927)

floor(2345.67)

26.mod(n1,n2)

abs(100)abs(-100)

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ceil(3.1415927)

18.atan

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

31.sigh

14.trim(‘s‘from‘string‘)

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

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asin(0.5)

返回一个数字e的n次方