--- /dev/null
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+## supported types: bool;int8;int16;int32;int64;uint8;uint16;uint32;uint64;float32;float64;string
+true;-1;-1;-1;-1;1;1;1;1;1.1;1.1;str-1
+false;-2;-2;-2;-2;2;2;2;2;2.2;2.2;str-2
+null;NULL;null;N/A;;null;null;null;null;null;null;null