Tom Lane wrote:
OTOH we may be talking at cross-purposes --- on looking into gram.y I see that this syntax is transformed to a call of convert_using(), which may mean it has nothing to do with your changes.
No, I changed convert_using - http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/catalog/pg_conversion.c?r1=1.36&r2=1.37
We can revert that if necessary. It will open up a hole, though. Take your pick - spec compliance or validly coded data.
cheers andrew ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match