David G. Johnston wrote:
>>>> In a production environment you don't want a user to change your table
>>>> statistics.
>>>>
>>>> They could just set default_statistics_target to something stupid,
>>>> run ANALYZE and wreck the statistics for everyone.
>>>> And then come back to the DBA and complain that things don't work.
>>> Setting default_statistics_target and running ANALYZE are two entirely different things.
>> Setting default_statistics_target affects the statistics computed by ANALYZE,
>> so I cannot follow you here.
> Just because I can run ANALYZE doesn't mean I should be able to update the statistic targets. While
> the features are related the permissions are not.
See http://www.postgresql.org/docs/current/static/planner-stats.html
"The amount of information stored in pg_statistic by ANALYZE, in particular the
maximum number of entries in the most_common_vals and histogram_bounds arrays
for each column, can be set on a column-by-column basis using the
ALTER TABLE SET STATISTICS command, or globally by setting the
default_statistics_target configuration variable."
Yours,
Laurenz Albe
