Hi Laurenz - Based on Tom's email earlier, I realized it was my function that was causing the issue. I am trying to figure out where the problem is
Here is my function:
column definition is as below:
completed_date_time timestamptz GENERATED ALWAYS AS
(task_completed_date(info->>'dd', info->>'qq', info->>'dp', info->>'ej', info->>'dq', info->>'ek') ) stored
-- 'info' is a jsonb column in the same table
------------------------------------------
-- task_completed_date() is defined as 'immutable', but calls another function:
;create or replace FUNCTION task_completed_date(completed_date_string text, completed_time_string text default null,
check_in_date_string text default null, check_in_time_string text default null,
check_out_date_string text default null, check_out_time_string text default null)
RETURNS timestamptz as
$$
begin
if check_out_date_string is not null and length(check_out_date_string)> 0 then
return
date_convert_date_time_string_to_timestamptz(check_out_date_string, check_out_time_string);
else
return date_convert_date_time_string_to_timestamptz(completed_date_string, completed_time_string);
end if;
exception when others then
return null;
END ;
$$
LANGUAGE plpgsql immutable;
-----------------------------------------------------------
-- function date_convert_date_time_string_to_timestamptz is also defined as 'immutable':
create or replace FUNCTION date_convert_date_time_string_to_timestamptz(VARIADIC params text[])
RETURNS timestamptz as
$$
begin
return array_to_string($1 , ' ')::timestamptz ;
exception when others then
return null;
END ;
$$
LANGUAGE plpgsql immutable;
-----------------------------------------------------------------
On Wed, 2021-01-20 at 17:32 -0800, Santosh Udupi wrote:
> My Postgres 12 database tables have generated columns. I use pg_dump to backup
> the database but when I restore using pg_restore, the generated columns are empty.
> How do I trigger creating the data in the generated columns?
Does the expression that generates the computed column uses an
expression containing a function that is marked IMMUTABLE, but
isn't really?
Yours,
Laurenz Albe
--
Cybertec | https://www.cybertec-postgresql.com