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ES|QL POW function

Embedded
base
Numeric expression for the base. If null, the function returns null.
exponent

Numeric expression for the exponent. If null, the function returns null.

Returns the value of base raised to the power of exponent.

Note

It is still possible to overflow a double result here; in that case, null will be returned.

base exponent result
double double double
double integer double
double long double
double unsigned_long double
integer double double
integer integer double
integer long double
integer unsigned_long double
long double double
long integer double
long long double
long unsigned_long double
unsigned_long double double
unsigned_long integer double
unsigned_long long double
unsigned_long unsigned_long double 
ROW base = 2.0, exponent = 2
| EVAL result = POW(base, exponent)
base:double exponent:integer result:double
2.0 2 4.0

The exponent can be a fraction, which is similar to performing a root. For example, the exponent of 0.5 will give the square root of the base:

ROW base = 4, exponent = 0.5
| EVAL s = POW(base, exponent)
base:integer exponent:double s:double
4 0.5 2.0