short sql question

Hi,

Am 18.06.2021 um 09:15 schrieb goldgraeber-werbetechnik@t-online.de:

Hi,

I just cannot see what is wrong with my query:

create table files (id int, name text, prev_name text, ....);
create table fnchanged (id int, name text);

update files f set prev_name = f.name, name = c.name from fnchanges c where f.id = c.id and c.name != f.name

your update statement works for me after changing

from fnchanges

  to

from fnchanged
(as written in your create statement) but I've gotERROR: relation "fnchanges" does not exist instead of a syntax error

--- gets syntax error at "from"

(Using PostgreSQL 10.4 on a NAS box)

Best regards
Wolfgang

kind regards
Georg