Directory structure:
└── ayushi-b-sql-for-data-analysis/
├── README.md
├── [Advanced] SQL Advanced Joins and Performance Tuning/
│ └── Lesson 7 - [Advancerd] SQL Advanced Joins and Performance Tuning.sql
├── [Advanced] SQL Window Functions/
│ └── Lesson 6 - [Advanced] SQL Window Functions.sql
├── Basic SQL/
│ └── Lesson 1 - Basic SQL.sql
├── SQL Aggregations/
│ └── Lesson 3 - SQL Aggregations.sql
├── SQL Data Cleaning/
│ └── Lesson 5 - SQL Data Cleaning.sql
├── SQL Joins/
│ ├── README.md
│ └── Lesson 2 - SQL Joins.sql
└── SQL Subqueries and Temporary Tables/
└── Lesson 4 - SQL Subqueries and Temporary Tables.sql