What is the difference between a JOIN and a UNION in SQL?

  • JOIN combines rows from two or more tables based on a related column
  • JOIN is used for vertical merging
  • UNION combines the results of two or more SELECT statements
  • UNION is used for horizontal merging
In SQL, a JOIN combines rows from two or more tables based on a related column, while a UNION combines the results of two or more SELECT statements. JOIN operates vertically by merging rows, while UNION operates horizontally by combining result sets.
Add your answer
Loading...

Leave a comment

Your email address will not be published. Required fields are marked *