Re: Add min and max execute statement time in pg_stat_statement - Mailing list pgsql-hackers

From Andrew Dunstan
Subject Re: Add min and max execute statement time in pg_stat_statement
Date
Msg-id 54BFD4B9.9050707@dunslane.net
Whole thread Raw
In response to Re: Add min and max execute statement time in pg_stat_statement  (Arne Scheffer <scheffa@uni-muenster.de>)
Responses Re: Add min and max execute statement time in pg_stat_statement
Re: Add min and max execute statement time in pg_stat_statement
List pgsql-hackers
On 01/21/2015 11:21 AM, Arne Scheffer wrote:
>
>
>
> Why is it a bad thing to call the column "stddev_samp" analog to the
> aggregate function or make a note in the documentation, that the 
> sample stddev is used to compute the solution?


I think you are making a mountain out of a molehill, frankly. These 
stats are not intended as anything other than a pretty indication of the 
shape, to see if they are significantly influenced by outliers. For any 
significantly large sample size the difference will be negligible.

But I will add a note to the documentation, that seems reasonable.

cheers

andrew




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