本課程是 Learn SQL Basics for Data Science 專項課程專項課程的一部分

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Sadie St. Lawrence

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Learn SQL Basics for Data Science 專項課程加州大学戴维斯分校

課程信息

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As data collection has increased exponentially, so has the need for people skilled at using and interacting with data; to be able to think critically, and provide insights to make better decisions and optimize their businesses. This is a data scientist, “part mathematician, part computer scientist, and part trend spotter” (SAS Institute, Inc.). According to Glassdoor, being a data scientist is the best job in America; with a median base salary of $110,000 and thousands of job openings at a time. The skills necessary to be a good data scientist include being able to retrieve and work with data, and to do that you need to be well versed in SQL, the standard language for communicating with database systems.
This course is designed to give you a primer in the fundamentals of SQL and working with data so that you can begin analyzing it for data science purposes. You will begin to ask the right questions and come up with good answers to deliver valuable insights for your organization. This course starts with the basics and assumes you do not have any knowledge or skills in SQL. It will build on that foundation and gradually have you write both simple and complex queries to help you select data from tables.  You'll start to work with different types of data like strings and numbers and discuss methods to filter and pare down your results. 

You will create new tables and be able to move data into them. You will learn common operators and how to combine the data. You will use case statements and concepts like data governance and profiling. You will discuss topics on data, and practice using real-world programming assignments. You will interpret the structure, meaning, and relationships in source data and use SQL as a professional to shape your data for targeted analysis purposes. 

Although we do not have any specific prerequisites or software requirements to take this course, a simple text editor is recommended for the final project. So what are you waiting for? This is your first step in landing a job in the best occupation in the US and soon the world!

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第 1 門課程（共 4 門）

Learn SQL Basics for Data Science 專項課程

初級

完成時間大約為14 小時

英語（English）

對員工進行熱門技能培訓能否為您的公司帶來益處？

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您將學到的內容有

Identify a subset of data needed from a column or set of columns and write a SQL query to limit to those results.
Use SQL commands to filter, sort, and summarize data.
Create an analysis table from multiple queries using the UNION operator.
Manipulate strings, dates, & numeric data using functions to integrate data from different sources into fields with the correct format for analysis.

您將獲得的技能

Data Science
Data Analysis
Sqlite
SQL

可靈活調整截止日期

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可分享的證書

完成後獲得證書

100% 在線

立即開始，按照自己的計劃學習。

第 1 門課程（共 4 門）

Learn SQL Basics for Data Science 專項課程

初級

完成時間大約為14 小時

英語（English）

對員工進行熱門技能培訓能否為您的公司帶來益處？

體驗 Coursera 企業版

授課教師

授課教師評分

4.66/5 （4,015 個評分）

Sadie St. Lawrence

Founder and CEO Women in Data (WID)

Continuing and Professional Education

496,224 個學生

3 門課程

提供方

加州大学戴维斯分校

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內容評分91%（47,977 個評分）

週

週 1

完成時間為 4 小時

Getting Started and Selecting & Retrieving Data with SQL

In this module, you will be able to define SQL and discuss how SQL differs from other computer languages. You will be able to compare and contrast the roles of a database administrator and a data scientist, and explain the differences between one-to-one, one-to-many, and many-to-many relationships with databases. You will be able to use the SELECT statement and talk about some basic syntax rules. You will be able to add comments in your code and synthesize its importance.

完成時間為 4 小時

11 個視頻（總計 52 分鐘）, 2 個閱讀材料, 4 個測驗

11 個視頻

Course Introduction4分鐘

Module Introduction1分鐘

What is SQL Anyway?7分鐘

Data Models, Part 1: Thinking About Your Data5分鐘

Data Models, Part 2: The Evolution of Data Models3分鐘

Data Models, Part 3: Relational vs. Transactional Models5分鐘

Retrieving Data with a SELECT Statement4分鐘

Creating Tables7分鐘

Creating Temporary Tables4分鐘

Adding Comments to SQL5分鐘

Summary1分鐘

2 個閱讀材料

SQL Overview15分鐘

Data Modeling and ER Diagrams35分鐘

4 個練習

Let's Practice!30分鐘

Practice Simple Select Queries30分鐘

Module 1 Quiz30分鐘

Module 1 Coding Questions10分鐘

週

週 2

完成時間為 3 小時

Filtering, Sorting, and Calculating Data with SQL

In this module, you will be able to use several more new clauses and operators including WHERE, BETWEEN, IN, OR, NOT, LIKE, ORDER BY, and GROUP BY. You will be able to use the wildcard function to search for more specific or parts of records, including their advantages and disadvantages, and how best to use them. You will be able to discuss how to use basic math operators, as well as aggregate functions like AVERAGE, COUNT, MAX, MIN, and others to begin analyzing our data.

完成時間為 3 小時

9 個視頻（總計 49 分鐘）, 1 個閱讀材料, 3 個測驗

9 個視頻

Module Introduction1分鐘

Basics of Filtering with SQL8分鐘

Advanced Filtering: IN, OR, and NOT7分鐘

Using Wildcards in SQL6分鐘

Sorting with ORDER BY4分鐘

Math Operations4分鐘

Aggregate Functions6分鐘

Grouping Data with SQL5分鐘

Putting it All Together3分鐘

1 個閱讀材料

SQL for Various Data Science Languages25分鐘

3 個練習

Module 2 Practice Quiz30分鐘

Module 2 Quiz30分鐘

Module 2 Coding Assignment45分鐘

週

週 3

完成時間為 3 小時

Subqueries and Joins in SQL

In this module, you will be able to discuss subqueries, including their advantages and disadvantages, and when to use them. You will be able to recall the concept of a key field and discuss how these help us link data together with JOINs. You will be able to identify and define several types of JOINs, including the Cartesian join, an inner join, left and right joins, full outer joins, and a self join. You will be able to use aliases and pre-qualifiers to make your SQL code cleaner and efficient.

完成時間為 3 小時

10 個視頻（總計 56 分鐘）, 2 個閱讀材料, 3 個測驗

10 個視頻

Module Introduction1分鐘

Using Subqueries6分鐘

Subquery Best Practices and Considerations5分鐘

Joining Tables: An Introduction5分鐘

Cartesian (Cross) Joins4分鐘

Inner Joins8分鐘

Aliases and Self Joins6分鐘

Advanced Joins: Left, Right, and Full Outer Joins7分鐘

Unions5分鐘

Summary5分鐘

2 個閱讀材料

SQL and Python10分鐘

Union and Union All10分鐘

3 個練習

Practice Quiz - Writing Queries30分鐘

Module 3 Quiz30分鐘

Module 3 Coding Assignment45分鐘

週

週 4

完成時間為 4 小時

Modifying and Analyzing Data with SQL

In this module, you will be able to discuss how to modify strings by concatenating, trimming, changing the case, and using the substring function. You will be able to discuss the date and time strings specifically. You will be able to use case statements and finish this module by discussing data governance and profiling. You will also be able to apply fundamental principles when using SQL for data science. You'll be able to use tips and tricks to apply SQL in a data science context.

完成時間為 4 小時

10 個視頻（總計 53 分鐘）, 3 個閱讀材料, 3 個測驗

10 個視頻

Module Introduction1分鐘

Working with Text Strings7分鐘

Working with Date and Time Strings5分鐘

Date and Time Strings Examples5分鐘

Case Statements7分鐘

Views6分鐘

Data Governance and Profiling5分鐘

Using SQL for Data Science, Part 15分鐘

Using SQL for Data Science, Part 26分鐘

Course Summary2分鐘

3 個閱讀材料

Additional SQL Resources to Explore15分鐘

Welcome to Peer Review Assignments!10分鐘

Yelp Dataset SQL Lookup5分鐘

2 個練習

Module 4 Quiz30分鐘

Module 4 Coding Questions35分鐘

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來自SQL FOR DATA SCIENCE的熱門評論

由 JG 提供2021年8月22日

I thought this course was great! Great introduction to Relational Databases and SQLite. Highly reccomend for anyone new to SQL, Databases, or someone looking to get started with a data science career.

由 NC 提供2020年10月18日

I really liked the course, I learned too much. The explanation is clear, appropriate activities and very good traceability. I really enjoyed it, I will definitely apply what I learned in my career.

由 P 提供2020年9月12日

This is amazing course . Once you join this it gives complete information about SQL basics.To improve knowledge of creating databases it is very important course.I am glad to become part of these.

由 DA 提供2021年6月21日

Thank you for the material that was presented well and clearly. I got to know better how to use SQL for data science. Hopefully, by learning this, I can implement it in the future as a Data Analyst.

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關於 Learn SQL Basics for Data Science 專項課程

This Specialization is intended for a learner with no previous coding experience seeking to develop SQL query fluency. Through four progressively more difficult SQL projects with data science applications, you will cover topics such as SQL basics, data wrangling, SQL analysis, AB testing, distributed computing using Apache Spark, Delta Lake and more. These topics will prepare you to apply SQL creatively to analyze and explore data; demonstrate efficiency in writing queries; create data analysis datasets; conduct feature engineering, use SQL with other data analysis and machine learning toolsets; and use SQL with unstructured data sets.

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