Databases
🗄️ Introduction to SQL
Query relational databases: SELECT, filtering with WHERE, and sorting with ORDER BY.
What you'll learn
- Query columns from a table with
SELECT ... FROM - Filter rows with
WHEREusing comparison and logical operators (AND,OR) - Sort results with
ORDER BYin ascending (ASC) and descending (DESC) order
Lessons
Relational databases and SQLTables, rows, columns, and the SQL language. Filter rows with WHEREKeep only the rows that meet a condition. Sort with ORDER BYSort the results ascending or descending.Practice this module in the app
DevPath is a hands-on course: you read the theory here; in the app you put it into practice with exercises that really run, offline.
Start free in the app →