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

20.cos

xm

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

sin(20)sinh(20)

atan(1)

24.ln

100100

wether

1-10

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

返回一个数字的对数值

返回一个给定数字的余弦

cos(-3.1415927)

2345

abs(100)abs(-100)

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

18.atan

asin(0.5)

102427

sql>selectceil(3.1415927)fromdual;

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

返回大于或等于给数字的最小整数

trailing剪掉后面的字符

本章尚未读完,请击下一页继续阅读---->>>

weather‘);

返回n1的n2次方

--

28.round和trunc

---------

15.abs

sql>selectacos(-1)fromdual;

.78539816

sin(1.57079)

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

sql>selectatan(1)fromdual;

返回一个以n1为底n2的对数

acos(-1)

返回一个数字的反正切值

weather

sql>selectsin(1.57079)fromdual;

7.38905612.7182818

.52359878

如果不指定,默认为空格符

102

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

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

对给定的数字取整数

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

sql>selectcosh(20)fromdual;

242582598

22.exp

17.asin

返回一个数字的正弦值

exp(2)exp(1)

29.sign

cosh(20)

leading剪掉前面的字符

sql>selectcos(-3.1415927)fromdual;

14.trim(‘s‘from‘string‘)

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

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

19.ceil

31.sigh

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

-1

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

返回一个数字反余弦值

25.log(n1,n2)

floor(2345.67)

26.mod(n1,n2)

---------

1

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

ceil(3.1415927)

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

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

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

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

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

30.sin

sql>selectasin(0.5)fromdual;

21.cosh

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

27.power

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

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

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

0.69314718.99999999

02

4

sql>selectfloor(2345.67)fromdual;

16.acos

23.floor

返回指定值的绝对值

返回一个n1除以n2的余数

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

56-5555-55

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

3.1415927

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

---------

照指定的度行舍

---------

给反余弦的值

返回双曲正弦的值

--------

返回一个数字e的n次方

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

给反正弦的值