RE: Sql Performance

From: Christopher Spence <cspence_at_FuelSpot.com>
Date: Tue, 29 May 2001 11:56:44 -0700
Message-ID: <F001.003125D0.20010529111059@fatcity.com>

No, but Query one is better, it will allow you to adapt to changes. If someone adds a column to your table and you select *, all of a sudden all your applications break as there are more columns than originally inticipated. You can program to prevent this, but naming all the columns is #1 self documenting, 2# safer.

"Walking on water and developing software from a specification are easy if both are frozen."

Christopher R. Spence
Oracle DBA
Fuelspot

-----Original Message-----
Sent: Friday, May 25, 2001 5:01 PM
To: Multiple recipients of list ORACLE-L

Gurus,

Will there be any performance gain by going for query1 instead of query2.

Query1:
select col1,col2, col3,..col2n from tab;

Query2:

select * from tab;

Thanks,
SIva
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Author: Valiveru, Siva
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Author: Christopher Spence
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