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Can we create more then one primary key in a table

 
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msnreddy

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Joined: 09 Jun 2004
Posts: 4
Location: Bangalore

PostPosted: Fri Jun 11, 2004 5:58 pm    Post subject: Can we create more then one primary key in a table
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Can anybody clarify my doubt? Can we create more then one primary key in a table? if create is there any limit? [/url]
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imvs

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Joined: 12 May 2004
Posts: 33

PostPosted: Fri Jun 11, 2004 7:11 pm    Post subject:
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msnreddy
A table cannot have more than one primary key , however
1) a primary key can have more than one column(max of 64 columns)
2) Another way to allow only unique values in a column is to create a table using the UNIQUE clause of the
CREATE TABLE or ALTER TABLE statement.
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khamarutheen

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Joined: 23 Aug 2005
Posts: 680
Location: NJ

PostPosted: Thu Nov 03, 2005 2:41 pm    Post subject: primary key
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hi frnd,
u cannot have more than one primary key in a single table. since that is the key value where v r going to refer the particular record.
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