Just For My Daily Diary
Just For My Daily Diary
Introduction 介绍 Now that you know how to access and examine a dataset, you’re ready to write your first SQL query! As you’ll soon see, SQL queries will help you sort through a massive dataset, to retrieve only the information that you need. 现在您已经知道如何访问和检查数据集，您就可以编写您的第一个 SQL 查询了！ 您很快就会看到，SQL 查询将帮助您对海量数据集进行排序，以仅检索您需要的信息。 We’ll begin by using the keywords SELECT, […]
This notebook is an exercise in the SQL course. You can reference the tutorial at this link. Introduction 介绍 The first test of your new data exploration skills uses data describing crime in the city of Chicago. 对您的新数据探索技能的首次测试，使用描述芝加哥市犯罪的数据。 Before you get started, run the following cell. It sets up the automated feedback system to review […]
Introduction 介绍 Structured Query Language, or SQL, is the programming language used with databases, and it is an important skill for any data scientist. In this course, you’ll build your SQL skills using BigQuery, a web service that lets you apply SQL to huge datasets. 结构化查询语言（或 SQL）是用于数据库的编程语言，对于任何数据科学家来说都是一项重要技能。 在本课程中，您将使用 BigQuery 培养您的 SQL 技能，这是一项可让您将 SQL 应用于大型数据集的 Web […]