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From:Ian P. Christian Date:March 29 2009 9:13am
Subject:Re: IN vs. OR on performance
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2009/3/29 Oscar <ro4tub@stripped>:
> Hi all-
> I want to know what the difference between IN and OR is under the hood.
> select * from dummy_table where id in (2, 3, 4, 5, 6, 7);
> select * from dummy_table where id=2 or id=3 or id=4 or id=5 or id=6 or
> id=7;

I've have thought once the query is compiled, they are the same. What
might cause a difference in performance is doing  id > 2 and id <= 7.

Test it on a large dataset and let us know :)

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IN vs. OR on performanceOscar29 Mar
  • Re: IN vs. OR on performanceIan P. Christian29 Mar
    • RE: IN vs. OR on performanceMartin Gainty29 Mar
    • Re: IN vs. OR on performanceClaudio Nanni29 Mar
      • Re: IN vs. OR on performanceBaron Schwartz31 Mar