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SQL - JOIN using UNION ?? UNION using JOIN ?? with example!

873477Jul 5 2011 — edited Oct 29 2013
I was asked this question during one of my interviews. Can you do JOIN using UNION keyword? Can you do UNION using JOIN keyword?

That is -
1. I should get same output as JOIN without using JOIN keyword, but using UNION Keyword?
2. I should get same output as UNION without using UNION keyword, but using JOIN Keyword?

Can you give me an example of how to do this if possible?
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Locked on Nov 26 2013
Added on Jul 5 2011
#database, #pl-sql, #query, #sql, #sql-developer
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