| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Andreas Joseph Krogh <andreas(at)visena(dot)com> |
| Cc: | pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: ERROR: attribute number 6 exceeds number of columns 5 |
| Date: | 2019-11-26 15:49:11 |
| Message-ID: | 6352.1574783351@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Andreas Joseph Krogh <andreas(at)visena(dot)com> writes:
> Run the attached script and you'll get:
> psql -f error.sql -d test
> psql:error.sql:37: ERROR: attribute number 6 exceeds number of columns 5
Hmm, interesting. IMO, that *should* have thrown an error, but of
course not that one. The ADD COLUMN operations are all processed
in parallel, so it's not okay for one of them to have a GENERATED
expression that refers to another one of the new columns. But you
should have gotten a "no such column" type of error, not a run-time
cross-check failure.
regards, tom lane
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