SQL tutorials for beginners/ Oracle Database tutorials. - SQL UNION and UNION ALL: Everything You Need to Know

How to Combine SQL Query Results: UNION vs UNION ALL [SQL Interview Edition] Learn how to combine the results of two or more SQL query results into one using the UNION and UNION ALL SQL set operators. This video tutorial will show you how to use these operators to create a single result set that contains all of the data from the original tables, either with or without duplicates. The UNION operator combines the results of two or more SELECT statements and removes any duplicate rows. The UNION ALL operator also combines the results of two or more SELECT statements, but it does not remove any duplicate rows. Whatsapp Channel - https://whatsapp.com/channel/0029Va8xCKqATRSqp4wAvo3n ------------------------------------------------------------------------- ►►►Social Media – Where I sort of Live https://www.instagram.com/RebellionRider/ https://www.facebook.com/TheRebellionRider/ https://twitter.com/RebellionRider https://www.linkedin.com/in/mannbhardwaj/ ------------------------------------------------------------------------- ►►►Books I refer to PL/SQL https://amzn.to/2QE1jX0 Performance Tuning https://amzn.to/2sgiAw4 1z0-071 Exam https://amzn.to/2sgfeJw Python Programming https://amzn.to/305UEbh ------------------------------------------------------------------------- ►►►Camera Gears ► Video Gears That We Use For Creating Our YouTube Video https://www.amazon.in/shop/manishsharma?listId=DU9UM0XL97KM&ref=idea_share_inf ► Work From Home Essential Tech That We Use Daily https://www.amazon.in/shop/manishsharma?listId=XAZ18JLLSNB5&ref=idea_share_inf AFFILIATE DISCLOSURE: Some of the links used in the description will direct you to Amazon.in. As an Amazon Associate, I earn from qualifying purchases at no additional cost to you. #RebellionRider