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From chenerlu <...@git.apache.org>
Subject [GitHub] carbondata pull request #877: [CARBONDATA-951] create table ddl can specify ...
Date Thu, 11 May 2017 08:02:28 GMT
Github user chenerlu commented on a diff in the pull request:

    https://github.com/apache/carbondata/pull/877#discussion_r115926761
  
    --- Diff: examples/spark/src/main/scala/org/apache/carbondata/examples/CarbonBitMapFilterQueryExample.scala
---
    @@ -0,0 +1,153 @@
    +/*
    + * 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 org.apache.carbondata.core.constants.CarbonCommonConstants
    +import org.apache.carbondata.core.util.CarbonProperties
    +import org.apache.carbondata.examples.util.ExampleUtils
    +
    +object CarbonBitMapFilterQueryExample {
    +  def main(args: Array[String]) {
    +    val cc = ExampleUtils.createCarbonContext("CarbonExample")
    +    val testData = ExampleUtils.currentPath + "/src/main/resources/data.csv"
    +
    +    // Specify timestamp format based on raw data
    +    CarbonProperties.getInstance()
    +      .addProperty(CarbonCommonConstants.CARBON_TIMESTAMP_FORMAT, "yyyy/MM/dd")
    +    cc.sql("""
    +           SELECT date
    +           FROM t3
    +           limit 100
    +           """).show(1)
    +
    +    var start = System.currentTimeMillis()
    +    for (index <- 1 to 1) {
    +      cc.sql("""
    +           SELECT country, serialname, phonetype, salary, name, id
    +           FROM t3
    +           WHERE country <> 'china'
    +           """).show(10)
    +    }
    +    print("country <> 'china': " + (System.currentTimeMillis() - start))
    --- End diff --
    
    You can add cost time or something else, or will be thought as records number by others.


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