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What is the diffrence between IN and EXISTS.which one is
faster.
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Answer Posted / manoranjan sethy
Exist operator always faster then In operator.
because assume that we gave value like in(10) then what is does? it will search my entire table and wherever 10 is found it will return as output.
but in exist operator if 10 found then optimizer will stop the searching process that is how exist gives more performance.
ii) In operator all ways conduct pattern search process but exist conduction boolean state of search process.
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