Dataset pack
Customer phone columns
Customers with up to three phone numbers in separate columns.
Fictional data · UTF-8 CSV, every value quoted so padding and leading zeros survive; empty fields are missing values · free for personal and classroom practice · practise it in First available contact number.
customers 16 rows × 4 columns
Download customers.csv (Pro)Data dictionary
- id
- Unique customer ID.
- mobile
- Mobile number as typed.
- landline
- Landline as typed.
- work_phone
- Work number as typed.
Values are shown in quotes so leading and trailing spaces are visible. ∅ means the cell is missing. Exercises are also graded on hidden datasets that are never published.