Doc: Update documentation for modifying postgres_fdw foreign tables.

Document that they can be modified using COPY as well.

Back-patch to v11 where commit 3d956d956 added support for COPY in
postgres_fdw.

diff --git a/doc/src/sgml/postgres-fdw.sgml b/doc/src/sgml/postgres-fdw.sgml
index 4de2bfc0621b110f7e4b50177efd36ff380ef76d..f9fa8bc779467e4a3d9fac1daf74b9ee296ef43f 100644 (file)
--- a/doc/src/sgml/postgres-fdw.sgml
+++ b/doc/src/sgml/postgres-fdw.sgml
@@ -63,9 +63,10 @@
  
   Now you need only SELECT from a foreign table to access
   the data stored in its underlying remote table.  You can also modify
-  the remote table using INSERT, UPDATE, or
-  DELETE.  (Of course, the remote user you have specified
-  in your user mapping must have privileges to do these things.)
+  the remote table using INSERT, UPDATE,
+  DELETE, or COPY.  (Of course, the
+  remote user you have specified in your user mapping must have privileges to
+  do these things.)