documentationlog¶
Description¶
Returns logarithm of a numeric expression (second argument) with the provided base (first argument). The base should be greater than 0 and not exactly 1.0 and the value should be greater than 0.
Return type¶
float64
Domain¶
This is a scalar function (calculates a single output value for a single input row.)
Categories¶
Usage¶
log( base, value )
Argument |
Type |
Required |
Multiple |
Constant |
|---|---|---|---|---|
base |
numeric |
Required |
Only one |
Variable |
value |
numeric |
Required |
Only one |
Variable |
Examples¶
make_col log_val:log(10, @.temperature)
Returns the logarithm of column temperature at base 10