Dataset pack
Mixed two- and three-letter country codes
Customer countries captured as ISO alpha-2 or alpha-3 codes, plus a reference table.
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 Two code systems in one column.
customers 18 rows × 2 columns
Download customers.csv (Pro)Data dictionary
- id
- Unique customer ID.
- country
- Country code as typed.
iso 10 rows × 2 columns
Download iso.csv (Pro)Data dictionary
- code
- Accepted code (alpha-2 or alpha-3).
- alpha2
- Its alpha-2 equivalent.
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.