Re: BUG #5372: insert into fails with integer expression type char error

"Gray Watson" <gray.pg@mailnull.com> writes:
> I have 2 tables which have the same schema (as far as I can see) but when I
> try to do the following in psql:

> INSERT INTO old_log SELECT * FROM log WHERE time < '2010-02-01';

> I get the error:

> ERROR: column "port" is of type integer but expression is of type character

That's just bizarre.  The only thought that comes to mind is that the
error is in a trigger or rule attached to old_log, but you aren't
showing any such thing in your psql \d output.

If you pg_dump the tables and restore into another database, can you
still replicate the misbehavior?  In any case it might be helpful to
look at "pg_dump -s -t table" output for these two tables.

Another thing that might be relevant is whether you've ever dropped
any columns in either table?

            regards, tom lane