log10

This function is used to return the natural logarithm of a given value with a base of 10.

log10(DOUBLE a)

**Table 1** Parameter
Parameter	Mandatory	Type	Description
a	Yes	DOUBLE, BIGINT, DECIMAL, or STRING	The value can be a float, integer, or string. If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.

The return value is of the DOUBLE type.

If the value of a is negative, 0, or NULL, NULL is returned.

The value NULL is returned.

select log10(null);

The value NULL is returned.

select log10(0);

The value 0.9542425094393249 is returned.

select log10(9);

The value 1 is returned.

select log10(10);

Parent topic: Mathematical Functions

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