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EXCEL|Power Query的高级应用4-条件判断

  • 2026-05-13 21:34:57
EXCEL|Power Query的高级应用4-条件判断
背景介绍:判断下图左表的销售案例,在右表显示的结果为:如果连续4个尺码都有销售,结果就显示为【齐码销售】,否则结果为【断码销售】。
在这个案例中,我们用到了之前没有接触到的功能区的一个功能:【转换】-【信息】-【符号】。下面咱们来通过分步执行来看下实现效果。
1)将左表导入到查询编辑器,命名为【判断齐码】。操作如下图所示。
2)选中尺码所在的所有列,单击功能区【转换】-【信息】-【符号】,操作如下图所示。此步骤用于判断每个数字的正负性质。如果是正数,则返回1;如果是负数,则返回-1.这样会让所有数字变成1和0.
3)在上一步的结果上再次选中尺码所在的所有列,然后添加一个合并列,操作如下图所示。
4)结果如下图所示。这一步是为了下一步的条件判断做准备的。
5)添加一列条件列,命名为【判断】,条件设置如下图所示:
6)结果如下图所示,就直接显示结果了。
我们打开高级编辑器看下里面的代码:
这个里面主要用到2个函数:Number.Sign和Text.From. 虽然这个案例中,我们不需要修改函数就能直接出结果了。但是这2个函数咱们还是来简单了解下。
函数:=Number.Sign
语法:=Number.Sign(number)
说明:如果number是正数,则返回1;如果是负数,则返回-1;如果是0,则返回0
函数:=Text.From
语法:=Text.From(value,culture)
说明:返回value的文本表示形式;第二个参数culture是国际地区识别码,“zh-CN”表示中文地区,“en-US”表示英文地区
另外,开头部分右边的表格里的底色设置我只是想起个提醒的作用。这个底色设置的功能,Power Query 编辑器里的格式设置是临时的,关闭后再打开就会消失,无法保存,所以更推荐上载后在源Excel表格里通过条件格式来设置。
今天的内容挺简单的。学到现在,凡是不用手动改公式的,都已经是非常友好的操作了。这个里面用到的【符号】的功能,有点类似True or False的判断,是今天这个案例的关键步骤。希望大家在工作中有机会用到的时候,都能第一时间想起来吧。

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  1. CONNECT:[ UseTime:0.000520s ] mysql:host=127.0.0.1;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000796s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000313s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000335s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000489s ]
  6. SELECT * FROM `set` [ RunTime:0.000192s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000600s ]
  8. SELECT * FROM `article` WHERE `id` = 511165 LIMIT 1 [ RunTime:0.000399s ]
  9. UPDATE `article` SET `lasttime` = 1778876908 WHERE `id` = 511165 [ RunTime:0.001881s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000232s ]
  11. SELECT * FROM `article` WHERE `id` < 511165 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000413s ]
  12. SELECT * FROM `article` WHERE `id` > 511165 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000909s ]
  13. SELECT * FROM `article` WHERE `id` < 511165 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000705s ]
  14. SELECT * FROM `article` WHERE `id` < 511165 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000912s ]
  15. SELECT * FROM `article` WHERE `id` < 511165 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001049s ]
0.075932s