"Gaetano Mendola" <[EMAIL PROTECTED]> writes:
> I'm trying to create an index on a timestamptz field just extracting the
> date:
> # create index idx_user_logs_login_time_date on user_logs (
> date(login_time) );
> ERROR: DefineIndex: index function must be marked IMMUTABLE
> why date is not marked immutable ?
Because the conversion depends on your timezone setting.
regards, tom lane
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