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Which two of the following query will produce same result

 
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Jeevanand
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Joined: 26 Dec 2006
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Location: Coimbatore

PostPosted: Thu Apr 12, 2007 5:14 pm    Post subject: Which two of the following query will produce same result
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Consider that student table having

stud no
1
2
3
3

Which two of the following query will produce same result

1--- select * from stud
union
select * from stud

2----select Distinct from stud

3----select * from stud

4----select * from stud
union all
select * from stud
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Prajesh_v_p

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Joined: 24 May 2006
Posts: 133
Location: India

PostPosted: Thu Apr 12, 2007 5:25 pm    Post subject:
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I think 1 and 2.. as union removes duplicates..
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priyamnavada

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PostPosted: Tue May 15, 2007 7:02 pm    Post subject:
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Query 1 and 2 gives the same result
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