>>-LOG10--(--expression--)-------------------------------------><
The schema is SYSFUN.
Returns the base 10 logarithm of the argument.
The argument can be of any built-in numeric type. It is converted to double-precision floating-point number for processing by the function.
The result of the function is a double-precision floating-point number. The result can be null; if the argument is null, the result is the null value.