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select 1 from tablename

596159Mar 13 2008 — edited Mar 13 2008

Hi All

I searched in the Oracle documents what (select 1 from tablename)and (select * from tablename where 1=0) meant and I could not find an answer. Can some one explain what Oracle does internally
use .Thanks in advance!!!

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user593156

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Added on Mar 13 2008

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