Strings, Dates & CASE in SQL: interview exercises

Strings, Dates & CASE in SQL: 5 test-checked interview exercises (Cut and reshape text), each beside a worked example, with tests as you go. Free.

1. Cut and reshape text
2. Bucket values with CASE
3. Days between two dates
4. Weekdays and weekends
5. Fold rows into a list

Each exercise pairs a worked example with a twin problem to solve in a real editor; the tests run the moment you do. Progress is saved in your browser, and in your account if you sign in.

More SQL topics

• Select & Filter
• Aggregation
• Joins
• Subqueries & CTEs
• Window Functions
• Modifying Data
• Schema Design

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