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最近准备数据岗面试 刷了三个月的题 SQL 统计 case 都练了 结果昨天面试官问我一个业务问题 你怎么判断这个指标的下降是真的下降 我直接卡住了 脑子一片空白
是不是光刷题没用啊 有没有人懂这类业务问题怎么练 感觉自己白刷了
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