The operate returns the initial and final title of the specified BusinessEntityID along with the Call type for that human being. The CASE expression inside the SET assertion decides the value to Screen for your column ContactType based on the existence of your BusinessEntityID column in the Employee, Seller, or https://findsomeonetotakemycasest75441.thezenweb.com/the-2-minute-rule-for-hbr-case-studies-74000231