Topic: SQL*Plus and PL/SQL >> Exists vs in
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| pammi |
Posted: May 27, 2008 07:12:27 AM |
Total Post: 21
Joined: Feb, 2008
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| Please let me know how in operator works better than exists in sub queries |
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 Murtuja |
| Posted: May 27, 2008 07:36:47 AM |  |
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Total Post: 857
Joined: Jan, 2006
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Hi,
http://jenniferlinca.wordpress.com/2008/02/22/which-one-is-faster-in-or-exists-when-should-i-use-in-and-exists/
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| seema |
| Posted: Sep 02, 2008 05:48:58 AM | |
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Total Post: 70
Joined: Jan, 2008
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IN - That will return all possible records and scan whole table.
Exists - That will return first match record and that will not scan whole table .that is faster then IN.
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