Исходный код вики Группировка с выбором 1 наибольшего в каждой группе | GROUP BY
Версия 7.5 от Alexandr Fokin на 2023/12/16 14:01
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| author | version | line-number | content |
|---|---|---|---|
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7.1 | 1 | |
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4.1 | 2 | {{code language="sql"}} |
| 3 | SELECT | ||
| 4 | t1.GroupItem, | ||
| 5 | t1.SortProperty | ||
| 6 | FROM | ||
| 7 | dbo.Table1 t1 | ||
| 8 | JOIN ( | ||
| 9 | SELECT | ||
| 10 | t1.GroupItem, | ||
| 11 | max(t1.SortProperty) AS MaxSortValue | ||
| 12 | FROM | ||
| 13 | dbo.Table1 t1 | ||
| 14 | GROUP BY | ||
| 15 | t1.GroupItem | ||
| 16 | ) AS dt ON t1.GroupItem = dt.GroupItem | ||
| |
5.1 | 17 | --AND t1.SortProperty = dt.MaxSortValue |
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4.1 | 18 | {{/code}} |