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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Is this a performance issue?
Actually this is not a performance issue bcos when Oracle fetches rows for a
select it does in with implicit cursor
which goes row by row not column by column. Even if we mention a single col
it fetches the whole row.
Gurus correct me I am wrong..
Kamesh.
-----Original Message-----
From: schanna [mailto:schanna_at_att.com]
Sent: Monday,July 24, 2000 9:07 PM
To: ORACLE-L
Cc: schanna
Subject: Is this a performance issue?
Gurus,
I'm wondering if it's a performance issue if i select all the columns from a table even if you don't require.
Let say I have a table which has about 50 columns in it and i need to get values for only 5-10 columns. So, instead of selecting only these columns I select *.
Any idea if that screws up my performance?
Santhosh Babu
-- Author: Channa, Santhosh, SITS INET: schanna_at_att.com Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).Received on Tue Jul 25 2000 - 03:09:36 CDT
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