4cac07be30
Analyze a table even when it's empty. The result should be like this: mysql> show column stats nation; +-------------+-------+------+----------+-----------+---------------+------+------+--------+--------------+---------+-------------+---------------------+ | column_name | count | ndv | num_null | data_size | avg_size_byte | min | max | method | type | trigger | query_times | updated_time | +-------------+-------+------+----------+-----------+---------------+------+------+--------+--------------+---------+-------------+---------------------+ | n_comment | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | N/A | N/A | FULL | FUNDAMENTALS | MANUAL | 0 | 2023-12-06 19:22:09 | | n_nationkey | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | N/A | N/A | FULL | FUNDAMENTALS | MANUAL | 0 | 2023-12-06 19:22:09 | | n_regionkey | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | N/A | N/A | FULL | FUNDAMENTALS | MANUAL | 0 | 2023-12-06 19:22:09 | | n_name | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | N/A | N/A | FULL | FUNDAMENTALS | MANUAL | 0 | 2023-12-06 19:22:09 | +-------------+-------+------+----------+-----------+---------------+------+------+--------+--------------+---------+----
# 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. # fe-common This module is used to store some common classes of other modules. # spark-dpp This module is Spark DPP program, used for Spark Load function. Depends: fe-common # fe-core This module is the main process module of FE. Depends: fe-common, spark-dpp