Re: Schema with OID 0 does not exist in pg_dump

Lukasz Brodziak <lukasz(dot)brodziak(at)gmail(dot)com> writes:
> Ok, I've found the rows theyh were placed in pg_operator table. After
> deletion I get the following error in pg_dump:
> pg_dump: Error message from server: ERROR: operator is not unique: smallint
> <> integer
> LINE 1: ...d = relowner) AS rolname, relchecks, (reltriggers <> 0) AS r...
> ^
> HINT: Could not choose a best candidate operator. You may need to add
> explicit type casts.

Kinda looks like you deleted some rows you shouldn't have ... the above
is about what I'd expect to happen if you'd removed the int2 <> int4
operator. Do you know what you removed, exactly? You might try
comparing the contents of pg_operator with another, non-broken database,
and putting back whatever's missing.

regards, tom lane