Learn the essential Structured Query Language (SQL) skills needed for data science tasks. This course provides a solid foundation in querying relational databases to retrieve, filter, aggregate, and join data for analysis.
Prerequisites No prior knowledge required.
Level:
Database Concepts
Understand basic relational database concepts like tables, columns, rows, and primary keys.
Data Retrieval
Write SQL queries using the SELECT statement to retrieve specific data from database tables.
Data Filtering and Sorting
Filter data using the WHERE clause and sort results using the ORDER BY clause.
Data Aggregation
Perform basic calculations on data using aggregate functions like COUNT, SUM, AVG, MIN, and MAX.
Combining Data
Combine data from multiple tables using the INNER JOIN clause.
Basic Data Manipulation (Optional)
Understand the concepts behind inserting, updating, and deleting data (though focus is on querying).
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