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Message Posted: Thu, 23 Apr 2015 @ 20:43:43 GMT

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Subj:   Re: Subtracting two TIMESTAMP
From:   Prescott, Kyle

Overflow message depends on how the source timestamps are defined. I don't believe you can simply cast the timestamps or interval results to a lesser precision than the definition of the source definitions.

With DBQL Log table: Starttime, FirstStepTime, FirstRespTime are all defined as TIMESTAMP(2). So...as you manipulate them you will need to at least keep a precision of "2" for the sub-seconds.

     firststeptime - starttime hour (4) to second(2) as ParseTime,
     firstresptime - firststeptime hour(4) to second(2) as QueryExecTime,
     firstresptime - starttime hour(4) to second(2) as QueryTotalTime

Kyle Prescott
DBA Manager
Chattanooga, TN

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