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Excel最强去重函数 UNIQUE,一篇彻底告别重复值烦恼

  • 2026-06-29 03:17:19
Excel最强去重函数 UNIQUE,一篇彻底告别重复值烦恼

日常处理Excel报表时,你一定遇到过这样的问题:客户名单重复、订单组合太多、想快速提取唯一值却只会用“删除重复项”——每次源数据更新又要重做一遍。今天分享的 UNIQUE 函数,能让你一键去重、动态刷新,效率提升10倍!

🚀 适用版本:Excel 2021 或 Microsoft 365(支持动态数组),老版本无法使用,建议升级。

一、UNIQUE 语法 · 三分钟入门

函数结构:=UNIQUE(array, [by_col], [exactly_once])
array(必需):要提取唯一值的单元格区域或数组。
by_col(可选):默认 FALSE 表示逐行比较(竖向数据);设置为 TRUE 则逐列比较(水平数据)。
exactly_once(可选):默认 FALSE 返回所有不重复值;TRUE 则只返回仅出现过一次的值。
⚡ 最迷人的特性:动态数组 —— 只需在一个单元格输入公式,结果会自动“溢出”到相邻区域,源数据改变时结果同步更新,一劳永逸!

二、实战案例(基于销售订单表)

我们有一张“客户购物记录表”,包含重复姓名、多笔订单。先来看基础数据:

场景1:提取单列唯一客户(去重名单)

=UNIQUE(A2:A7)
只需一个公式,所有不重复客户自动生成;如果原始表新增客户“孙七”,结果区域会自动扩充,超级智能

🔗 场景2:多列联合去重(姓名+商品唯一组合)

=UNIQUE(A2:B7)
此时“张三”购买笔记本和鼠标被认为是两种不同组合,全部保留,精准分析客户偏好。

场景3:仅出现一次的客户(新客识别)

=UNIQUE(A2:A7, FALSE, TRUE)
第三参数设为 TRUE,自动筛选出仅出现一次的数据,非常适合挖掘新用户或低频行为。

景4:水平数据去重(横向比较)

假设某行数据为:一月、二月、一月、三月(横向排列)。我们希望去除重复月份。
=UNIQUE(B1:E1, TRUE)
第二个参数改为 TRUE 即可处理横向标题或跨列数据。

三、组合技:让 UNIQUE 威力翻倍

🔥 UNIQUE + SORT:去重后自动排序

=SORT(UNIQUE(A2:A7))
先提取唯一客户,再按字母/拼音排序,生成一份规范名单。结果动态刷新,无需手动排序。

🧹 UNIQUE + FILTER:按条件筛选唯一值

=UNIQUE(FILTER(A2:A7, C2:C7="线上"))
仅保留购买渠道为“线上”的客户,再去重。最终得到:张三、王五、赵六。高效精准!
💡 小贴士:动态数组公式会占用一片连续区域,请确保右侧和下方没有其他数据,否则会报! 错误,清除阻挡即可。

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  1. CONNECT:[ UseTime:0.001012s ] mysql:host=127.0.0.1;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001525s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.101145s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.101340s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001552s ]
  6. SELECT * FROM `set` [ RunTime:0.052456s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.002012s ]
  8. SELECT * FROM `article` WHERE `id` = 529435 LIMIT 1 [ RunTime:0.081177s ]
  9. UPDATE `article` SET `lasttime` = 1783005509 WHERE `id` = 529435 [ RunTime:0.049636s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.045829s ]
  11. SELECT * FROM `article` WHERE `id` < 529435 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.022772s ]
  12. SELECT * FROM `article` WHERE `id` > 529435 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.026111s ]
  13. SELECT * FROM `article` WHERE `id` < 529435 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.013496s ]
  14. SELECT * FROM `article` WHERE `id` < 529435 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.006222s ]
  15. SELECT * FROM `article` WHERE `id` < 529435 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001224s ]
0.625903s