LOG10() Function in SQL Server
The LOG10() function in SQL Server is used to return the base-10 logarithm of a given numeric expression. It takes a single argument, which must be a positive numeric expression.
LOG10 ( numeric_expression )
Suppose we have a table named "sales" with the following data:
To find the base-10 logarithm of the sales column, we can use the following query:
SELECT product, LOG10(sales) as log_sales
This will give us the following result:
Another way to calculate the base-10 logarithm is by using the formula:
LOG10(x) = LOG(x) / LOG(10)
Using this formula, we can rewrite the above query as:
SELECT product, LOG(sales) / LOG(10) as log_sales
This will give us the same result as before.