它的语法形式是 offset (reference,rows,cols,height,width)，下面就以一个实例应用做解释 。以a1单元格作为参考系，向下移动2行，向右移动2列，我们可以直接找到引用的单元格是 c3，结果是6。 In that case, the sql offset will have to be calculated. Given that get_items does not seem to be a standard model method, it's probably calculated in there;
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An offset within an array or other data structure object is an integer indicating the distance (displacement) between the beginning of the object and a given element or point,.
