| # |
| # 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. |
| # |
| |
| """ |
| public classes of Spark SQL: |
| |
| - L{SQLContext} |
| Main entry point for SQL functionality. |
| - L{DataFrame} |
| A Resilient Distributed Dataset (RDD) with Schema information for the data contained. In |
| addition to normal RDD operations, DataFrames also support SQL. |
| - L{GroupedData} |
| - L{Column} |
| Column is a DataFrame with a single column. |
| - L{Row} |
| A Row of data returned by a Spark SQL query. |
| - L{HiveContext} |
| Main entry point for accessing data stored in Apache Hive.. |
| """ |
| |
| from pyspark.sql.context import SQLContext, HiveContext |
| from pyspark.sql.types import Row |
| from pyspark.sql.dataframe import DataFrame, GroupedData, Column, SchemaRDD |
| |
| __all__ = [ |
| 'SQLContext', 'HiveContext', 'DataFrame', 'GroupedData', 'Column', 'Row', |
| ] |