Thanks, but I actually wanted to do it from C code. But anyway I think I found the answer: use the symbolic constants in catalog/pg_type.h, such as INT4OID.
On Mon, Oct 19, 2015 at 6:44 PM, Melvin Davidson <melvin6925@xxxxxxxxx> wrote:
SELECT typname
FROM pg_type
WHERE oid = Oid_x;--On Mon, Oct 19, 2015 at 2:36 PM, Ken Been <kbbeen@xxxxxxxxx> wrote:Thanks.I'm working on a foreign data wrapper and I want to switch based on the column type. Specifically, if the column type in the external table is the same as in the (locally defined) foreign table then I can get some speedup for some types.Through the ForeignScanState object I can get TupleDesc and AttInMetadata opjects, and through there I can get the Oid of the column type, but now I'm stumped. How can I programmatically check whether Oid X refers to type int4, or whatever?Melvin Davidson
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