SQL Queries Online Course

Certainly! Here's an overview of a sales overview course tailored for SQL:

1. **Introduction to SQL and Relational Databases**
- Understanding SQL and its importance in data management
- Overview of relational databases
- Introduction to key SQL concepts: tables, rows, columns, and relationships

2. **Setting Up the Environment**
- Installing and configuring a SQL database management system (DBMS)
- Creating a database for sales data
- Exploring SQL development environments (e.g., SQL Server Management Studio, MySQL Workbench)

3. **Data Definition Language (DDL) Basics**
- Creating tables to store sales data
- Defining data types and constraints
- Understanding primary keys and foreign keys

4. **Data Manipulation Language (DML) Basics**
- Inserting sales data into tables
- Updating existing data
- Deleting unnecessary data

5. **Querying Data with SELECT**
- Retrieving sales data from tables using the SELECT statement
- Filtering data with the WHERE clause
- Sorting results with the ORDER BY clause

6. **Aggregating Data with Functions**
- Using aggregate functions (e.g., SUM, AVG, COUNT) to analyze sales data
- Grouping data with the GROUP BY clause
- Filtering grouped data with the HAVING clause

7. **Joins and Relationships**
- Understanding relationships between tables (one-to-many, many-to-many)
- Performing inner joins, left joins, and right joins to combine data from multiple tables
- Handling null values in joins

8. **Subqueries and Derived Tables**
- Writing subqueries to solve complex problems
- Creating derived tables to simplify queries
- Understanding correlated subqueries

9. **Advanced SQL Techniques**
- Using window functions to perform calculations over partitions of data
- Employing common table expressions (CTEs) for recursive queries and query simplification
- Utilizing stored procedures and user-defined functions for automation and reusability

10. **Optimizing Query Performance**
- Identifying and resolving performance bottlenecks
- Indexing strategies for improving query execution
- Query optimization techniques (e.g., query rewriting, avoiding unnecessary joins)

11. **Data Visualization and Reporting**
- Integrating SQL with reporting tools (e.g., Tableau, Power BI)
- Writing SQL queries for generating reports and dashboards
- Creating views for simplifying reporting tasks

12. **Data Security and Maintenance**
- Implementing access controls to protect sensitive sales data
- Performing database backups and restores
- Monitoring and optimizing database performance over time

This course provides a comprehensive understanding of SQL for managing, querying, and analyzing sales data efficiently and effectively. Each topic is designed to build upon the previous one, equipping learners with the necessary skills to work with SQL in a sales context.

• Section 1 03:58

  • 1: sql 101 - 1 - Unzipping the sample files 01:06
  • 2: sql 101 -2 - Creating the sample data base 02:52

• Section 2 29:50

  • 3: sql 101 - 3 - Basic Select Statements 08:51
  • 4: sql 101 - 5 - Using the where statement to filter the query 20:59

• Section 3 38:25

  • 5: sql 101 - 6 - Creating subtotals using the Group By statement 09:09
  • 6: sql 101 - 5 - Using the where statement to filter the query 20:59
  • 7: sql 101 - 7 - Introduction to using the Join statement to create queries from mo 08:17

1. **Lesson 1 - Unzipping the Sample Files**
- Introduction to sample files
- Understanding file compression formats
- Unzipping sample files for database creation

2. **Lesson 2 - Creating the Sample Database**
- Setting up a SQL environment
- Creating a new database
- Importing data into SQL tables

3. **Lesson 3 - Basic SELECT Statements**
- Syntax and usage of SELECT statement
- Retrieving data from tables
- Displaying specific columns

4. **Lesson 4 - Sorting the Query with the ORDER BY Statement**
- Sorting retrieved data
- Understanding ascending and descending order
- Applying ORDER BY statement in queries

5. **Lesson 5 - Using the WHERE Statements to Filter the Query**
- Filtering data based on conditions
- Using logical operators in the WHERE clause
- Filtering with comparison operators

6. **Lesson 6 - Creating Subtotals Using the GROUP BY Statements**
- Introduction to GROUP BY clause
- Grouping data for aggregation
- Calculating subtotals with aggregate functions

7. **Lesson 7 - Introduction to Using JOIN Statement**
- Understanding SQL joins
- Different types of joins (e.g., INNER JOIN, LEFT JOIN, RIGHT JOIN)
- Joining tables to retrieve related data

Each lesson builds upon the previous one, providing a comprehensive understanding of SQL fundamentals for managing and querying sales data effectively.

No prior knowledge or experience required

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Reed Courses Certificate of Completion

Digital certificate - Included