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                # 去重 --- > ``distinct(true)`` 方法用于去除重復數據,但必須配合 ``field()`` 使用,這樣才可以定位到某一個字段 ``` this.Db('source').distinct(true).field('target_cell_type').select() ``` 最終的SQL語句為 ``` SELECT DISTINCT `target_cell_type` FROM `source` ```
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