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                ## 一、用法: `#{test.compute(sales+gifts)}` | 關鍵字 | 描述 | | --- | --- | | test | 數據集編碼 | | sales | 數據集字段(且該字段所在單元格被設置成動態屬性) | | gifts | 數據集字段(且該字段所在單元格被設置成動態屬性) | | + | 運算符,可以是加(+)減(-)乘(*)除(/) | ## 二、定義: 僅限于組合動態列分組中 用于動態屬性的計算 ## 三、需求: 在普通列表中,需要計算兩個單元格的和,通常使用SUM表達式,例如: ![](https://img.kancloud.cn/8b/b7/8bb7c5da105b718e77a36b4062f35f68_771x210.png) 或者: ![](https://img.kancloud.cn/b4/c3/b4c312d12350c12473e04367d3290744_760x141.png) 最終都能計算出求和的值: ![](https://img.kancloud.cn/1b/9b/1b9b178b39a2d8be2ef91dd687ae1431_769x401.png) **但是在組合動態列分組中建議使用組內小計特定的表達式`compute`**(語法見一) ## 四、示例 設計頁面: ![](https://img.kancloud.cn/8d/f4/8df4a597cc7cbcf4d96a2f0b8b47b4eb_701x196.png) 預覽效果: ![](https://img.kancloud.cn/9d/2c/9d2c4a80a511a6f6fc413dbc52d16ed4_1455x248.png) *橫向組內小計,只計算分組內的數據,并且支持多種運算符*
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