In SQL, aggregate functions perform a calculation on a set of values and return a single value. They are often used with the
GROUP BY clause of the
Note: Except for
COUNT(*), aggregate functions ignore all
List all the years and their number of movies, but only the years with more than 5 movies:
SELECT year,COUNT(*)FROM moviesGROUP BY yearHAVING COUNT(*) > 5;
- Returns the average value in a column.
- Returns the number of rows that match the specified criteria.
- Returns the largest value in a column.
- Returns the smallest value in a column.
- Returns the sum of all the value in that column.
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