I'm confused about the correct syntax for updating an aliased table. I want to update triple from triple_updates
where the data is different and tried to use the following....
update triple old
set
old.obln = new.obln, old.ointv = new.ointv, old.otime = new.otime, old.oflt = new.oflt, old.ostr = new.ostr, old.oint = new.oint, old.oda = new.oda, old.uasid = new.uasid
from triple_update as new
where (old.s = new.s and
old.g = new.g) and
( old.obln <> new.obln or old.ointv <> new.ointv or old.otime <> new.otime or old.oflt <> new.oflt or old.ostr <> new.ostr or old.oint <> new.oint or old.oda <> new.oda or old.uasid <> new.uasid)
...but postgres complains about not having column "old" in the triple table. Putting an "as" between triple and old on the first line didn't make any difference. If
I leave out the old alias, it complains about the columns being ambiguous. How should the query above be changed to be syntactically correct?
Thanks,
Andy
