Oracle_ Single Function _ number function
1.abs (x)
To get the absolute value of X
2.ceil (x)
Used to get the smallest integer greater than or equal to X
3.floor (x)
Used to get the largest integer less than or equal to X
4.mod (X,y)
The remainder that is used to calculate x divided by Y
5.power (X,y)
Used to compute the Y-power of X
6.round (X[,y])
Used to calculate the rounding result of X
Optional argument y: Describes rounding decimal numbers and rounding x at 0 decimal places if y is not specified
If Y is a negative number, the X is rounded to the |y| at the left of the decimal point
7.sign (x)
Symbol used to get X
If x is negative, returns-1, returns 1 if X is positive, and returns 0 if X is 0.
8.SQRT (x)
Used to compute the square root of X
9.trunc (X[,y])
Used to calculate the result of an X truncation
Optional argument y: Describes the fractional decimal truncation, and if Y is not specified, truncate x at 0 decimal places
If Y is a negative number, the X is truncated at the |y| bit to the left of the decimal point
This column more highlights: http://www.bianceng.cnhttp://www.bianceng.cn/database/Oracle/