diff -u ruby-interbase-0.07/interbase.c ruby-interbase/interbase.c
--- ruby-interbase-0.07/interbase.c	Thu Nov  4 04:01:52 2004
+++ ruby-interbase/interbase.c	Tue Apr 19 18:15:48 2005
@@ -194,6 +194,7 @@
 static VALUE ibcurs_close _((VALUE));
 static VALUE ibcurs_drop _((VALUE));
 static VALUE ibcurs_execute _((int, VALUE*, VALUE));
+static VALUE ibcurs_rows_affected _((VALUE));
 
 static void curs_mark();
 static void curs_free();
@@ -876,7 +877,7 @@
 			return curs;
    		}
 	}
-	return Qnil;
+	return ibcurs_rows_affected(curs);
 }
 
 static VALUE
@@ -1690,6 +1691,70 @@
 	return INT2NUM(STATEMENT_DML);
 }
 
+static long
+curs_rows_affected(curs)
+	struct IBcurs *curs;
+
+{
+	int insertCount = 0;
+	int updateCount = 0;
+	int deleteCount = 0;
+	int selectCount = 0;
+	int l			= 0;
+	int count		= 0;
+	char *ptr;
+	char count_type;
+	char strBuffer[64] = "";
+	char itemsReq[] = { isc_info_sql_records };
+
+	(void) isc_dsql_sql_info(isc_status, &curs->stmt, 1, itemsReq, sizeof(strBuffer), strBuffer);
+	ib_error_check();
+
+	if (strBuffer[0] != isc_info_sql_records) {
+		return -1;
+	}
+
+	for (ptr = strBuffer + 3; *ptr != isc_info_end; )
+	{
+		count_type = *ptr++;
+		l = isc_vax_integer (ptr, 2);
+		ptr += 2;
+		count = isc_vax_integer (ptr, (short)l);
+		ptr += l;
+		switch (count_type)   {
+
+			case isc_info_req_update_count:
+				updateCount = count;
+				break;
+	
+			case isc_info_req_delete_count:
+				deleteCount = count;
+				break;
+
+			case isc_info_req_select_count:
+				selectCount = count;
+				break;
+
+			case isc_info_req_insert_count:
+				insertCount = count;
+				break;
+		}
+	}
+
+	return insertCount + updateCount + deleteCount;
+}
+
+static VALUE
+ibcurs_rows_affected(self)
+	VALUE self;
+{
+	struct IBcurs *curs;
+
+	Data_Get_Struct(self, struct IBcurs, curs);
+
+	return INT2NUM(curs_rows_affected(curs));
+}
+
 static VALUE
 ibcurs_fetch(self)
 	VALUE self;
@@ -1827,6 +1892,7 @@
 
 	rb_cIBcursor = rb_define_class_under(rb_mInterBase, "Cursor", rb_cData);
 	rb_define_method(rb_cIBcursor, "execute", ibcurs_execute, -1);
+	rb_define_method(rb_cIBcursor, "rows_affected", ibcurs_rows_affected, 0);
 	rb_define_method(rb_cIBcursor, "description", ibcurs_description, 0);
 	rb_define_method(rb_cIBcursor, "fetch", ibcurs_fetch, 0);
 	rb_define_method(rb_cIBcursor, "fetchall", ibcurs_fetchall, 0);