From d3d53f955cf6ad755ba3682577e0f6fa10106438 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Tue, 4 Apr 2023 13:33:18 -0400
Subject: Add a way to get the current function's OID in pl/pgsql.

Invent "GET DIAGNOSTICS oid_variable = PG_ROUTINE_OID".
This is useful for avoiding the maintenance nuisances that come
with embedding a function's name in its body, as one might do
for logging purposes for example.  Typically users would cast the
result to regproc or regprocedure to get something human-readable,
but we won't pre-judge whether that's appropriate.

Pavel Stehule, reviewed by Kirk Wolak and myself

Discussion: https://postgr.es/m/CAFj8pRA4zMd5pY-B89Gm64bDLRt-L+akOd34aD1j4PEstHHSVQ@mail.gmail.com
---
 doc/src/sgml/plpgsql.sgml | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'doc/src')

diff --git a/doc/src/sgml/plpgsql.sgml b/doc/src/sgml/plpgsql.sgml
index 7c8a49fe435..f55e901c7e5 100644
--- a/doc/src/sgml/plpgsql.sgml
+++ b/doc/src/sgml/plpgsql.sgml
@@ -1639,6 +1639,11 @@ GET DIAGNOSTICS integer_var = ROW_COUNT;
          <entry>line(s) of text describing the current call stack
           (see <xref linkend="plpgsql-call-stack"/>)</entry>
         </row>
+        <row>
+         <entry><literal>PG_ROUTINE_OID</literal></entry>
+         <entry><type>oid</type></entry>
+         <entry>OID of the current function</entry>
+        </row>
        </tbody>
       </tgroup>
      </table>
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