Learning MySQL By Example
1.9
DISTINCT Clause
DISTINCT Keyword
- The DISTINCT clause removes duplicate rows from a query.
- DISTINCT appears directly after the SELECT clause.
- You can specify multiple columns, which means that the combination of columns must be unique.
Table 7. DISTINCT Keyword
Keyword |
Description |
Order of Evaluation |
DISTINCT |
Eliminates duplicate rows |
1 |
Example:
SELECT DISTINCT continent, name
FROM country
ORDER BY continent;
Results:

CC BY-NC-ND International 4.0: This work is released under a CC BY-NC-ND International 4.0 license, which means that you are free to do with it as you please as long as you (1) properly attribute it, (2) do not use it for commercial gain, and (3) do not create derivative works.
End-of-Chapter Survey
: How would you rate the overall quality of this chapter?- Very Low Quality
- Low Quality
- Moderate Quality
- High Quality
- Very High Quality