Which statement is wrong about Union clause?

 Posted by vishalneeraj-24503 on 11/25/2014 | Category: Sql Server Interview questions | Views: 2109 | Points: 40
Select from following answers:
  1. It is used to fetch only unique rows.
  2. It is used for joining multiple tables.
  3. All the tables will have to contain same number of columns.
  4. It is used for joining Columns.
  5. All Above

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