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                # SQL MAX() 函數 ## MAX() 函數 MAX 函數返回一列中的最大值。NULL 值不包括在計算中。 ### SQL MAX() 語法 ``` SELECT MAX(column_name) FROM table_name ``` 注釋:MIN 和 MAX 也可用于文本列,以獲得按字母順序排列的最高或最低值。 ## SQL MAX() 實例 我們擁有下面這個 "Orders" 表: | O_Id | OrderDate | OrderPrice | Customer | | --- | --- | --- | --- | | 1 | 2008/12/29 | 1000 | Bush | | 2 | 2008/11/23 | 1600 | Carter | | 3 | 2008/10/05 | 700 | Bush | | 4 | 2008/09/28 | 300 | Bush | | 5 | 2008/08/06 | 2000 | Adams | | 6 | 2008/07/21 | 100 | Carter | 現在,我們希望查找 "OrderPrice" 列的最大值。 我們使用如下 SQL 語句: ``` SELECT MAX(OrderPrice) AS LargestOrderPrice FROM Orders ``` 結果集類似這樣: | LargestOrderPrice | | --- | | 2000 |
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