Tom Lane <tgl@sss.pgh.pa.us> writes:
> Hannes Eder <Hannes@HannesEder.net> writes:
> > in parse_expr.c:typecast_expression: return immediate on NULL
> input, i.e. do not lookup target type Oid as it is not required.
>
> I think the existing ordering is intentional, to detect and error
> out if the given typename is bogus.

Ups, yes, you are right. typecast_expression calls typenameTypeId and
this calls typenameType, which will ereport an error if the typename
cannot be found.

-Hannes


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