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 do you used to write in the Stored procedure header ? Stored procedure header plays a crucial role in providing the What is the difference between ASCII() and CHAR() functions? ASCII() vs CHAR(): ASCII() and CHAR() functions work with What is the difference between REPLACE() and STUFF() functions? REPLACE() It is used to replace all the occurrences of Leave a Reply Cancel reply Your email address will not be published.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.