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; 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。
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