What is the purpose of the 'abs' function in Databricks SQL and Databricks Runtime 10.4 LTS and above?
The 'abs' function in Databricks SQL and Databricks Runtime 10.4 LTS and above is used to get the absolute value of a numeric or interval expression. It returns a numeric or interval of the same type as the input expression, but with a positive sign. For integral numeric types, an ARITHMETIC_OVERFLOW error may occur if there is an overflow. The 'abs' function is similar to the 'sign' and 'signum' functions, but it returns the absolute value instead of the sign.