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I have two columns in my table named as "start date" and "end date". I need difference of two tables and result as "completion time" in hh:mm:ss. Please help

  • Please visit here and updated your question : http://stackoverflow.com/help/how-to-ask – sagi Feb 14 '16 at 14:43
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    What DBMS? Update issue and tag with appropriate DBMS, as solution depends on DBMS type and what column types you're using. – DBug Feb 14 '16 at 14:44

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Possible duplicate of several questions. Listed a couple below,

SQL time difference between two dates result in hh:mm:ss

Calculate business hours between two dates

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