Thank you Holger and David, the error was the missing clausule STORED
The timecreated data type is Int8
King regards
Mauricio Fernández
El mié, 3 sept 2025 a las 13:46, Holger Jakobs (<holger@jakobs.com>) escribió:
Am 03.09.25 um 17:50 schrieb Mauricio Fernandez: > Hi admins, greetings. > > I'm trying to add a timestamp column in an existent table. > > This query works fine: > > select timecreated, timezone('America/Santiago'::text, > to_timestamp(timecreated::double precision)) datecreated > from MDL_LOGSTORE_STANDARD_LOG; > > But, when I want to alter the table I get a syntax error > > alter table MDL_LOGSTORE_STANDARD_LOG > add column datecreated timestamp > generated always as ( timezone ('America/Santiago'::text, > to_timestamp(timecreated::double precision))); > > SQL Error [42601]: ERROR: syntax error at end of input > Position: 185 > > I would appreciate some tips > > Thanks in advanced > > kind regards > > Mauricio Fernández
Instead of
alter table MDL_LOGSTORE_STANDARD_LOG add column datecreated timestamp generated always as ( timezone ('America/Santiago'::text, to_timestamp(timecreated::double precision)));
I would suggest
ALTER TABLE MDL_LOGSTORE_STANDARD_LOG ADD COLUMN datecreated TIMESTAMP GENERATED ALWAYS AS (timecreated AT TIME ZONE 'America/Santiago') STORED;
You didn't tell us the data type of the column timecreated. It should be 'TIMESTAMPTZ DEFAULT current_timestamp' for it to work properly.
As of Version 18 you can leave out STORED, creating a virtual generated column.
