COUNTIF函数两种使用情况：一是查看缺失数据；二是计算重复次数_哔哩哔哩_bilibili

Name: COUNTIF%E5%87%BD%E6%95%B0%E4%B8%A4%E7%A7%8D%E4%BD%BF%E7%94%A8%E6%83%85%E5%86%B5%EF%BC%9A%E4%B8%80%E6%98%AF%E6%9F%A5%E7%9C%8B%E7%BC%BA%E5%A4%B1%E6%95%B0%E6%8D%AE%EF%BC%9B%E4%BA%8C%E6%98%AF%E8%AE%A1%E7%AE%97%E9%87%8D%E5%A4%8D%E6%AC%A1%E6%95%B0
Uploaded: 2025-08-02T01:36:54.892Z