SQL for Data Scientists

Categories : Data Analytics Course Online

This Course Includes:

Get a hands-on experience in SQL with Seven Learning’s course SQL for Data Scientists, which is designed to be a learning resource for anyone who wants to become a data analyst or data scientist. It teaches the ability to pull data from databases to build their own datasets without having to rely on others in the organisation to query the source system and transform it into flat files / spreadsheets for them.

Lessons 1: Introduction

  • Who This Course Is For?
  • Why You Should Learn SQL if You Want to Be a Data Scientist?
  • Conventions

Lessons 2: Data Sources

  • Data Sources
  • Tools for Connecting to Data Sources and Editing SQL
  • Relational Databases
  • Dimensional Data Warehouses
  • Asking Questions About the Data Source
  • Introduction to the Farmer's Market Database

Lessons 3: The SELECT Statement

  • The SELECT Statement
  • The Fundamental Syntax Structure of a SELECT Query
  • Selecting Columns and Limiting the Number of Rows Returned
  • The ORDER BY Clause: Sorting Results
  • Introduction to Simple Inline Calculations
  • More Inline Calculation Examples: Rounding
  • More Inline Calculation Examples: Concatenating Strings
  • Evaluating Query Output
  • SELECT Statement Summary

Lessons 4: The WHERE Clause

  • The WHERE Clause
  • Filtering SELECT Statement Results
  • Filtering on Multiple Conditions
  • Multi-Column Conditional Filtering
  • More Ways to Filter
  • Filtering Using Subqueries

Lessons 5: CASE Statements

  • CASE Statement Syntax
  • Creating Binary Flags Using CASE
  • Grouping or Binning Continuous Values Using CASE
  • Categorical Encoding Using CASE
  • CASE Statement Summary

Lessons 6: SQL JOINs

  • Database Relationships and SQL JOINs
  • A Common Pitfall when Filtering Joined Data
  • JOINs with More than Two Tables

Lessons 7: Aggregating Results for Analysis

  • GROUP BY Syntax
  • Displaying Group Summaries
  • Performing Calculations Inside Aggregate Functions
  • MIN and MAX
  • COUNT and COUNT DISTINCT
  • Average
  • Filtering with HAVING
  • CASE Statements Inside Aggregate Functions

Lessons 8: Window Functions and Subqueries

  • ROW NUMBER
  • RANK and DENSE RANK
  • NTILE
  • Aggregate Window Functions
  • LAG and LEAD

Lessons 9: Date and Time Functions

  • Setting datetime Field Values
  • EXTRACT and DATE_PART
  • DATE_ADD and DATE_SUB
  • DATEDIFF
  • TIMESTAMPDIFF
  • Date Functions in Aggregate Summaries and Window Functions

Lessons 10: Exploratory Data Analysis with SQL

  • Demonstrating Exploratory Data Analysis with SQL
  • Exploring the Products Table
  • Exploring Possible Column Values
  • Exploring Changes Over Time
  • Exploring Multiple Tables Simultaneously
  • Exploring Inventory vs. Sales

Lessons 11: Building SQL Datasets for Analytical Reporting

  • Thinking Through Analytical Dataset Requirements
  • Using Custom Analytical Datasets in SQL: CTEs and Views
  • Taking SQL Reporting Further

Lessons 12: More Advanced Query Structures

  • UNIONs
  • Self-Join to Determine To-Date Maximum
  • Counting New vs. Returning Customers by Week

Lessons 13: Creating Machine Learning Datasets Using SQL

  • Datasets for Time Series Models
  • Datasets for Binary Classification
  • Taking Things to the Next Level

Lessons 14: Analytical Dataset Development Examples

  • What Factors Correlate with Fresh Produce Sales?
  • How Do Sales Vary by Customer Zip Code, Market Distance and Demographic Data?
  • How Does Product Price Distribution Affect Market Sales?

Lessons 15: Storing and Modifying Data

  • Storing SQL Datasets as Tables and Views
  • Adding a Timestamp Column
  • Inserting Rows and Updating Values in Database Tables
  • Using SQL Inside Scripts
  • In Closing

Hands-on LAB Activities

The SELECT Statement

  • Retrieving Data from Employee Department
  • Listing Materials
  • Analysing Total amount Paid By Customers'
  • Concatenating the First and Last Names

The WHERE Clause

  • Getting Details of Employees Residing in the US
  • Retrieving details of Sellers Whose Name Starts with Kick
  • Checking the Functionality of TRIM() Function
  • Retrieving Data of Employees Lived in the US and Canada
  • Analysing the Man Power in a Company

CASE Statements

  • Grading Employees Punctuality
  • Checking the Availability of Items Used in Production

SQL JOINs

  • Getting Detailed View for Analysing Population
  • Updating Post Office Databases
  • Getting Employees History

Aggregating Results for Analysis

  • Using the GROUP BY Keyword
  • Getting the Sum of Number of Items
  • Adding Unit Price
  • Retrieving the Minimum and Maximum Price of the Commodity
  • Retrieving Unique Places
  • Analysing the Items on the Basis of Price Category

Window Functions and Subqueries

  • Finding the Most Populated Territory
  • Analysing the Demography of Most Populated Territory
  • Retrieving Pay Frequency
  • Correcting the Entries of Database

Exploratory Data Analysis with SQL

  • Analysing Country Codes

Building SQL Datasets for Analytical Reporting

  • Creating a Personalized Alias of a Query
  • Creating a View

More Advanced Query Structures

  • Analysing Gender Ratio Inside a Company
  • Finding Overlap Records

Creating Machine Learning Datasets Using SQL

  • Retrieving Full Names

Analytical Dataset Development Examples

  • Finding Last Names

Storing and Modifying Data

  • Using the DROP Command
  • Updating a Record

Exam FAQs

FAQ's are not Available for this course.

Summary

Standard:

SQL - Data Scientists

Lessons:

15+ Lessons

Delivery Method:

Online

Language:

English

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