The LOG10 function returns the base-10 logarithm of the specified
The specified number must be a DOUBLE
number that is greater than zero (0).
- If the specified number is NULL, the result of this function is NULL.
- If the specified number is zero or a negative number, an exception is
returned that indicates that the value is out of range (SQL state 22003).
The data type of the returned value is a DOUBLE PRECISION number.