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                # SQL FIRST() 函數 ## FIRST() 函數 FIRST() 函數返回指定的字段中第一個記錄的值。 提示:可使用 ORDER BY 語句對記錄進行排序。 ### SQL FIRST() 語法 ``` SELECT FIRST(column_name) FROM table_name ``` ## SQL FIRST() 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" 列的第一個值。 我們使用如下 SQL 語句: ``` SELECT FIRST(OrderPrice) AS FirstOrderPrice FROM Orders ``` 結果集類似這樣: | FirstOrderPrice | | --- | | 1000 |
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