What are the basic rules to be followed when you are using SQL SET Operators? Posted in SQL Interview Questions by Chandrasekhar Raparthi On July 10, 2014. No comments Rules: Number of columns in all the result sets should be matched(same). Respective data types should be matched between all the result sets. Share this:GooglePinterestEmailTwitterLinkedInFacebook Tags:set operators,SQL Related Posts What is Index Scan and Index Seek? Any technical guy in this world can write code What is a Dirty page? Dirty page When we do any modification in the When do we use UDFs instead of Stored Procedures? Since there are more advantages of Stored procedures over Leave a Reply Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website Notify me of follow-up comments by email. Notify me of new posts by email.