LN

Computes the natural logarithm $ln(x)$ where $x$ is the given input.

Syntax

LN(X)

Arguments

X

Type: numeric

A numeric value.

Returns

Type: double

The natural logarithm of X.

Note that if $x \leq 0$, then the function returns a null value.

Examples

X	Output
1	0.0
0	null
2	0.6931471805599453
0.5	-0.6931471805599453
4 * 5	2.995732273553991

Transformation job example

SQL

CREATE JOB function_operator_example
    ADD_MISSING_COLUMNS = true	
    AS INSERT INTO default_glue_catalog.upsolver_samples.orders_transformed_data MAP_COLUMNS_BY_NAME
    SELECT 
        LN(1) AS ln_example
    FROM default_glue_catalog.upsolver_samples.orders_raw_data 
    WHERE time_filter()
    LIMIT 1;

Query result

ln_example
0.0