Below table shows the available PostgreSQL Mathematical Functions with examples.
| Function | Return Type | Description | Example | Result | |
|
2
|
abs( x ) |
(same as input)
|
absolute value | abs(-17.4) | 17.4 |
|
3
|
cbrt( dp ) | dp | cube root | cbrt(27.0) | 3 |
|
4
|
ceil( dp or numeric )
|
(same as input)
|
smallest integer not less than argument
|
ceil(-42.8) | -42 |
|
5
|
ceiling( dp or numeric )
|
(same as input)
|
smallest integer not less than argument (alias for ceil )
|
ceiling(-95.3) | -95 |
|
6
|
degrees( dp ) | dp |
radians to degrees
|
degrees(0.5) | 28.64788976 |
|
7
|
div( y numeric , x numeric )
|
numeric |
integer quotient of y / x
|
div(9,4) | 2 |
|
8
|
exp( dp or numeric )
|
(same as input)
|
exponential | exp(1.0) | 2.718281828 |
|
9
|
floor( dp or numeric )
|
(same as input)
|
largest integer not greater than argument
|
floor(-42.8) | -43 |
|
10
|
ln( dp or numeric )
|
(same as input)
|
natural logarithm
|
ln(2.0) | 0.6931471806 |
|
11
|
log( dp or numeric )
|
(same as input)
|
base 10 logarithm
|
log(100.0) | 2 |
|
12
|
log( b numeric , x numeric )
|
numeric |
logarithm to base b
|
log(2.0, 64.0) | 6 |
|
13
|
mod( y , x ) |
(same as argument types)
|
remainder of y / x
|
mod(9,4) | 1 |
|
14
|
pi() | dp | "π" constant | pi() | 3.141592654 |
|
15
|
power( a dp , b dp )
|
dp |
a raised to the power of b
|
power(9.0, 3.0) | 729 |
|
16
|
power( a numeric , b numeric )
|
numeric |
a raised to the power of b
|
power(9.0, 3.0) | 729 |
|
17
|
radians( dp ) | dp |
degrees to radians
|
radians(45.0) | 0.7853981634 |
|
18
|
round( dp or numeric )
|
(same as input)
|
round to nearest integer
|
round(42.4) | 42 |
|
19
|
round( v numeric , s int )
|
numeric |
round to s decimal places
|
round(42.4382, 2)
|
42.44 |
|
20
|
sign( dp or numeric )
|
(same as input)
|
sign of the argument (-1, 0, +1)
|
sign(-8.4) | -1 |
|
21
|
sqrt( dp or numeric )
|
(same as input)
|
square root | sqrt(2.0) | 1.414213562 |
|
22
|
trunc( dp or numeric )
|
(same as input)
|
truncate toward zero
|
trunc(42.8) | 42 |
|
23
|
trunc( v numeric , s int )
|
numeric |
truncate to s decimal places
|
trunc(42.4382, 2)
|
42.43 |
|
24
|
width_bucket( op numeric , b1 numeric , b2 numeric , count int )
|
int |
return the bucket to which operand would be assigned in an equidepth histogram with count buckets, in the range b1 to b2
|
width_bucket(5.35, 0.024, 10.06, 5)
|
3 |
|
25
|
width_bucket( op dp , b1 dp , b2 dp , count int )
|
int |
return the bucket to which operand would be assigned in an equidepth histogram with count buckets, in the range b1 to b2
|
width_bucket(5.35, 0.024, 10.06, 5)
|
3 |
Other PostgreSQL Mathematical functions are Trigonometric Functions: cos(),sin(),tan(),cot(),acos(),asin(),atan(),acot().