Github user chenerlu commented on a diff in the pull request:

    https://github.com/apache/carbondata/pull/1042#discussion_r122656172
  
    --- Diff: 
examples/spark/src/main/scala/org/apache/carbondata/examples/CarbonShowPartitionInfo.scala
 ---
    @@ -0,0 +1,114 @@
    +/*
    + * 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.
    + */
    +
    +package org.apache.carbondata.examples
    +
    +import scala.collection.mutable.LinkedHashMap
    +
    +import org.apache.carbondata.core.constants.CarbonCommonConstants
    +import org.apache.carbondata.core.util.CarbonProperties
    +import org.apache.carbondata.examples.util.ExampleUtils
    +
    +object CarbonShowPartitionInfo {
    +  def main(args: Array[String]) {
    +
    +    CarbonShowPartitionInfo.extracted("t3", args)
    +  }
    +  def extracted(tableName: String, args: Array[String]): Unit = {
    +    val cc = ExampleUtils.createCarbonContext("CarbonShowPartitionInfo")
    +    val testData = ExampleUtils.currentPath + 
"/src/main/resources/data.csv"
    +
    +    // range partition
    +    cc.sql("DROP TABLE IF EXISTS t1")
    +
    +    cc.sql("""
    +                | CREATE TABLE IF NOT EXISTS t1
    +                | (
    +                | vin String,
    +                | phonenumber Int,
    +                | country String,
    +                | area String
    +                | )
    +                | PARTITIONED BY (logdate Timestamp)
    +                | STORED BY 'carbondata'
    +                | TBLPROPERTIES('PARTITION_TYPE'='RANGE',
    +                | 'RANGE_INFO'='20140101, 2015/01/01 ,2016-01-01')
    +              """.stripMargin)
    +    cc.sql(s"""
    +      SHOW PARTITIONS t1
    +             """).show()
    +
    +    cc.sql("""
    +                | CREATE TABLE IF NOT EXISTS t3
    +                | (
    +                | logdate Timestamp,
    +                | phonenumber Int,
    +                | country String,
    +                | area String
    +                | )
    +                | PARTITIONED BY (vin String)
    +                | STORED BY 'carbondata'
    +                | 
TBLPROPERTIES('PARTITION_TYPE'='HASH','NUM_PARTITIONS'='5')
    +                """.stripMargin)
    +    cc.sql(s"""
    +      SHOW PARTITIONS t3
    +             """).show()
    +    // list partition
    +    cc.sql("DROP TABLE IF EXISTS t5")
    +
    +    cc.sql("""
    +       | CREATE TABLE IF NOT EXISTS t5
    +       | (
    +       | vin String,
    +       | logdate Timestamp,
    +       | phonenumber Int,
    +       | area String
    +       |)
    +       | PARTITIONED BY (country string)
    +       | STORED BY 'carbondata'
    +       | TBLPROPERTIES('PARTITION_TYPE'='LIST',
    +       | 'LIST_INFO'='(China,United States),UK ,japan,(Canada,Russia), 
South Korea ')
    +       """.stripMargin)
    +    cc.sql(s"""
    +      SHOW PARTITIONS t5
    +             """).show()
    +
    +    cc.sql(s"DROP TABLE IF EXISTS partitionDB.$tableName")
    +    cc.sql(s"DROP DATABASE IF EXISTS partitionDB")
    +    cc.sql(s"CREATE DATABASE partitionDB")
    +    cc.sql(s"""
    +                | CREATE TABLE IF NOT EXISTS partitionDB.$tableName
    +                | (
    +                | logdate Timestamp,
    +                | phonenumber Int,
    +                | country String,
    +                | area String
    +                | )
    +                | PARTITIONED BY (vin String)
    +                | STORED BY 'carbondata'
    +                | 
TBLPROPERTIES('PARTITION_TYPE'='HASH','NUM_PARTITIONS'='5')
    +                """.stripMargin)
    +    cc.sql(s"""
    +      SHOW PARTITIONS partitionDB.$tableName
    +             """).show()
    +
    +    cc.sql(s"""
    +      SHOW PARTITIONS $tableName
    +             """).show()
    +
    --- End diff --
    
    Suggest do some clear work, such as drop created tables and database.


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