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:

distinct.png

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