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MySQL Tutorial - Using Group Functions in the ORDER BY Clause
(Continued from previous topic...)
Can Group Functions Be Used in the ORDER BY Clause?
If the query output is aggregated as groups, you can sort the groups by using
group functions in the ORDER BY clause. The following statement returns
how many links were created in each year in each tag. The group output
is sorted by the count in each group in descending order:
mysql> SELECT tag, YEAR(created), COUNT(*)
FROM fyi_links GROUP BY tag, YEAR(created)
ORDER BY COUNT(*) DESC;
| tag | YEAR(created) | COUNT(*) |
| DBA | 2006 | 2 |
| DEV | 2006 | 1 |
| SQA | 2006 | 1 |
| DBA | 2005 | 1 |
| DEV | 2004 | 1 |
| SQA | 2003 | 1 |
6 rows in set (0.00 sec)
- What Is a SELECT Query Statement?
- How To Create a Testing Table with Test Data?
- How To Select All Columns of All Rows from a Table?
- How To Select Some Columns from a Table?
- How To Select Some Rows from a Table?
- How To Add More Data to the Testing Table?
- How To Sort the Query Output?
- Can the Query Output Be Sorted by Multiple Columns?
- How To Sort Output in Descending Order?
- How To Use SELECT Statement to Count Number of Rows?
- Can SELECT Statements Be Used on Views?
- How To Filter Out Duplications in Returning Rows?
- What Are Group Functions?
- How To Use Group Functions in the SELECT Clause?
- Can Group Functions Be Mixed with Non-group Selection Fields?
- How To Divide Query Output into Groups?
- How To Apply Filtering Criteria at Group Level?
- How To Count Duplicated Values in a Column?
- Can Multiple Columns Be Used in GROUP BY?
- Can Group Functions Be Used in the ORDER BY Clause?