Oracle LOG() function
Description
The Oracle LOG() function is used to return the logarithm, base B of N. The base can be any positive value other than 0 or 1 and the number can be any positive value.
The function takes any numeric or nonnumeric data type (can be implicitly converted to a numeric data type) as an argument.
If any argument is BINARY_FLOAT or BINARY_DOUBLE, then the function returns BINARY_DOUBLE. Otherwise, the function returns NUMBER.
Syntax:
LOG(B, N);
Argument:
| Name | Description |
|---|---|
| B | Indicates the base of N. |
| N | A number. |
Pictorial Presentation of LOG() function
Example: LOG() function using base of a number system
The statement below returns the natural logarithm of 1000 divided by the natural logarithm of 10.
SELECT LOG(10,1000) FROM dual;
Here is the result.
LOG(10,1000)
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