Oracle function Daquan 2 [resend]

15. Abs
Returns the absolute value of a specified value.
SQL> select ABS (100), ABS (-100) from dual;

ABS (100) ABS (-100)
------------------
100 100

16. ACOs
Returns the arc cosine value.
SQL> select ACOs (-1) from dual;

ACOs (-1)
---------
3.1415927

17. Asin
Returns the arcsin value.
SQL & gt; select asin (0.5) from dual;

Asin (0.5)
---------
. 52359878

18. atan
Returns the arc tangent of a number.
SQL> select atan (1) from dual;

Atan (1)
---------
. 78539816

19. ceil
Returns the smallest integer greater than or equal to the given number.
SQL> select Ceil (3.1415927) from dual;

Ceil (3.1415927)
---------------
4

20. Cos
Returns the cosine of a given number.
SQL> select cos (-3.1415927) from dual;

Cos (-1, 3.1415927)
---------------
-1

21. cosh
Returns the arc cosine of a number.
SQL> select cosh (20) from dual;

Cosh (20)
---------
242582598

22. Exp
Returns the n root of the number E.
SQL> select exp (2), exp (1) from dual;

Exp (2) exp (1)
------------------
7.3890561 2.7182818

23. Floor
Returns an integer to a given number.
SQL> select floor (2345.67) from dual;

Floor (2345.67)
--------------
2345

24. ln
Returns the logarithm of a number.
SQL> select ln (1), Ln (2), Ln (2.7182818) from dual;

Ln (1) ln (2) ln (1, 2.7182818)
-------------------------------
0. 69314718. 99999999

25. Log (N1, N2)
Returns the base N2 logarithm of N1.
SQL> Select log (2, 1), log (2, 4) from dual;

Log (2, 1) log (2, 4)
------------------
0 2

26. Mod (N1, N2)
Returns the remainder of N1 divided by N2.
SQL> select Mod (10, 3), MOD (3, 3), MOD (2, 3) from dual;

MoD () mod)
---------------------------
1 0 2

27. Power
Returns the N2 root of N1.
SQL> select power (2, 10), power (3, 3) from dual;

Power (2, 10) power (3, 3)
---------------------
1024 27

28. Round and trunc
Round according to the specified precision
SQL> select round (55.5), round (-55.4), trunc (55.5), trunc (-55.5) from dual;

Round (55.5) round (-55.4) trunc (55.5) trunc (-55.5)
----------------------------------------------
56-55 55-55

29. Sign
Returns 1 if the number N is greater than 0,-1 if the value is less than 0, and 0 if the value is 0.
SQL> select sign (123), sign (-100), sign (0) from dual;

Sign (123) sign (-100) Sign (0)
----------------------------
1-1 0

30. Sin
Returns the sine of a number.
SQL> select sin (1.57079) from dual;

Sin (1.57079)
------------
1

31. Sigh
Returns the hyperbolic sine value.
SQL> select sin (20), sinh (20) from dual;

Sin (20) sinh (20)
------------------
.. 91294525 242582598

32. SQRT
Returns the root of number n.
SQL> select SQRT (64), SQRT (10) from dual;

SQRT (64) SQRT (10)
------------------
8 3.1622777

33. Tan
Returns the tangent of a number.
SQL> select Tan (20), Tan (10) from dual;

Tan (20) Tan (10)
------------------
2.2371609. 64836083

34. Tanh
Returns the hyperbolic tangent of number n.
SQL> select Tanh (20), Tan (20) from dual;

Tanh (20) Tan (20)
------------------
1 2.2371609

 

35. trunc
Truncate a number based on the specified precision
SQL> select trunc (124.1666,-2) trunc1, trunc (124.16666, 2) from dual;

Trunc1 trunc (124.16666, 2)
---------------------------
100 124.16