免费一看一级欧美-免费一区二区三区免费视频-免费伊人-免费影片-99精品网-99精品小视频

        1、培訓過程中，如有部分內容理解不透或消化不好，可免費在以后培訓班中重聽；
        2、培訓結束后,授課老師留給學員聯系方式,保障培訓效果,免費提供課后技術支持。
        3、培訓合格學員可享受免費推薦就業機會。

Introduction

Overview of Data Access Approaches (Hive, databases, etc.)

Overview of Spark Features and Architecture

Installing and Configuring Spark

Understanding Dataframes in Spark

Defining Tables and Importing Datasets

Querying Data Frames using SQL

Carrying out Aggregations, JOINs and Nested Queries

Uploading and Accessing Data

Querying Different Types of Data

JSON, Parquet, etc.
Querying Data Lakes with SQL

Troubleshooting

Summary and Conclusion