sorting operators in pg_dump

diff --git i/src/bin/pg_dump/pg_dump.c w/src/bin/pg_dump/pg_dump.c
index 89a8a23..486cf64 100644
--- i/src/bin/pg_dump/pg_dump.c
+++ w/src/bin/pg_dump/pg_dump.c
@@ -3137,6 +3137,7 @@ getOperators(int *numOprs)
 	int			i_oprname;
 	int			i_oprnamespace;
 	int			i_rolname;
+	int			i_oprkind;
 	int			i_oprcode;
 
 	/*
@@ -3152,6 +3153,7 @@ getOperators(int *numOprs)
 		appendPQExpBuffer(query, "SELECT tableoid, oid, oprname, "
 						  "oprnamespace, "
 						  "(%s oprowner) AS rolname, "
+						  "oprkind, "
 						  "oprcode::oid AS oprcode "
 						  "FROM pg_operator",
 						  username_subquery);
@@ -3161,6 +3163,7 @@ getOperators(int *numOprs)
 		appendPQExpBuffer(query, "SELECT tableoid, oid, oprname, "
 						  "0::oid AS oprnamespace, "
 						  "(%s oprowner) AS rolname, "
+						  "oprkind, "
 						  "oprcode::oid AS oprcode "
 						  "FROM pg_operator",
 						  username_subquery);
@@ -3172,6 +3175,7 @@ getOperators(int *numOprs)
 						  "oid, oprname, "
 						  "0::oid AS oprnamespace, "
 						  "(%s oprowner) AS rolname, "
+						  "oprkind, "
 						  "oprcode::oid AS oprcode "
 						  "FROM pg_operator",
 						  username_subquery);
@@ -3190,6 +3194,7 @@ getOperators(int *numOprs)
 	i_oprname = PQfnumber(res, "oprname");
 	i_oprnamespace = PQfnumber(res, "oprnamespace");
 	i_rolname = PQfnumber(res, "rolname");
+	i_oprkind = PQfnumber(res, "oprkind");
 	i_oprcode = PQfnumber(res, "oprcode");
 
 	for (i = 0; i < ntups; i++)
@@ -3202,6 +3207,7 @@ getOperators(int *numOprs)
 		oprinfo[i].dobj.namespace = findNamespace(atooid(PQgetvalue(res, i, i_oprnamespace)),
 												  oprinfo[i].dobj.catId.oid);
 		oprinfo[i].rolname = pg_strdup(PQgetvalue(res, i, i_rolname));
+		oprinfo[i].oprkind = (PQgetvalue(res, i, i_oprkind))[0];
 		oprinfo[i].oprcode = atooid(PQgetvalue(res, i, i_oprcode));
 
 		/* Decide whether we want to dump it */
diff --git i/src/bin/pg_dump/pg_dump.h w/src/bin/pg_dump/pg_dump.h
index 3bfeb31..1c6dd26 100644
--- i/src/bin/pg_dump/pg_dump.h
+++ w/src/bin/pg_dump/pg_dump.h
@@ -204,6 +204,7 @@ typedef struct _oprInfo
 {
 	DumpableObject dobj;
 	char	   *rolname;
+	char		oprkind;
 	Oid			oprcode;
 } OprInfo;
 
diff --git i/src/bin/pg_dump/pg_dump_sort.c w/src/bin/pg_dump/pg_dump_sort.c
index 368208d..64f38ff 100644
--- i/src/bin/pg_dump/pg_dump_sort.c
+++ w/src/bin/pg_dump/pg_dump_sort.c
@@ -178,6 +178,16 @@ DOTypeNameCompare(const void *p1, const void *p2)
 		if (cmpval != 0)
 			return cmpval;
 	}
+	else if (obj1->objType == DO_OPERATOR)
+	{
+		OprInfo	*oobj1 = *(OprInfo * const *) p1;
+		OprInfo *oobj2 = *(OprInfo * const *) p2;
+
+		/* oprkind is 'l', 'r', or 'b'; this sorts prefix, postfix, infix */
+		cmpval = (oobj2->oprkind - oobj1->oprkind);
+		if (cmpval != 0)
+			return cmpval;
+	}
 
 	/* Usually shouldn't get here, but if we do, sort by OID */
 	return oidcmp(obj1->catId.oid, obj2->catId.oid);