Top 10 rides and attractions at Tennessee's Dollywood. PIGEON FORGE, TENN. - Set against the Great Smoky Mountains, Dollywood is surrounded by a green canopy of hardwood trees and colorful blankets of flowers that envelop every ride and attraction in the Tennessee wilderness.
Listed below are some differences to help distinguish between the two: 1  The WHERE clause specifies the criteria which individual records must meet to be selcted by a query. It can be used without the GROUP BY clause. The HAVING clause cannot be used without the GROUP BY clause.  The WHERE clause selects rows before grouping.
As I said this is very popular question and you can't afford not to prepare it. Always remember key difference between WHERE and HAVING clause in SQL, if WHERE and HAVING clause is used together, first WHERE clause is applied to filter rows and only after grouping HAVING clause is applied.