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再论Excel与数据处理

  • 2026-03-27 10:12:52
再论Excel与数据处理

Excel和数据处理》合集的写作暂告一个段落,合集中介绍了Excel常用操作和数据处理的方法和流程;相信这些内容可以帮助读者完成大部分数据处理和报表工作,本文将对Excel应用和数据处理应用做一些总结。

Excel最大的优势就是直观的界面和强大的函数库。Excel中以工作表、单元格等要素进行数据的录入、整理、计算、汇总等工作,对于数据处理工作者,特别是新手非常友好;对于某一领域的数据处理工作,Excel中则包含了众多功能的函数库,在“公式”选项卡>>“函数库”组中可以分类查看和选择这些函数,如下图所示。

##Excel函数库

使用Excel处理数据有一个显著的特点就是,单元格中的实际内容和显示的格式可能不一致,工作中如果不能明确区分它们之间的区别,就很有可能产生一些奇怪的问题。所以,在工作中要明确单元格的实际内容,在处理过程中尽可能使用原始数据和公式;最终呈现结果时再设置为所需要的格式。

虽然Excel的功能非常强大,但也有一些局限性,所以,在数据处理工作开展之前需要综合考虑,工作中是否完全使用Excel,或者如何使用Excel和其它工具配合使用。工作中能充分发挥工具的特点,并且能够灵活应用各种工具高效完成工作才是最终目的。

很多工作中,Excel都是数据处理工具箱中的重要一员。Excel格式的数据经常做为中介,在整个数据处理工作流程中即是数据载体,又是数据处理工具。比如,从某个系统中导出的数据可以使用Excel格式,然后又可以将标准化的Excel数据导入到系统中;而对于导出的Excel数据,又可以进行各种加工整理、计算汇总、制作报表和图表等。Excel数据还可以配合其它工具使用,如使用Word的邮件合并功能批量制作各种表单、卡函就是很典型的应用。

Excel中,使用宏和VBA编程可以极大扩展数据处理功能,并能够自动化完成很多复杂的数据处理工作。但需要注意的是,宏病毒是数据和计算机安全的严重威胁之一,所以,对于使用的VBA代码要格外注意,应确保其可靠性和安全性。

此外,《Excel和数据处理》合集中暂时没涉及的还有Power Query。那么,Power Query是什么?它有什么功能?相信官方的说明比较权威:

“Power Query是数据转换和数据准备引擎。Power Query附带用于从源获取数据的图形界面,以及用于应用转换的Power Query编辑器。由于引擎在许多产品和服务中都可用,因此存储数据的目标取决于使用Power Query的位置。使用Power Query,可以执行数据的提取、转换和加载(ETL)处理。”

##Power Query的角色(源自微软官方网站)

简单地说,Power Query是一种ETL(提取、转换、加载)工具。可以回想一下前面文章中介绍的CSV数据导入工作,在Excel 2021中就是通过Power Query实现的,首先会确定数据源(CSV文件)、然后对各列的数据类型和格式进行确认、最后将处理结果加载到Excel工作表中,这就是Power Query的基础应用。工作中,通过Power Query转换数据时还可以进行一系列整理、过滤和计算,如排序、筛选、修改列名、数据计算等一系列的操作。最重要的是,Power Query可以将ETL处理过程保存下来,如果经常需要从固定的数据源导入数据,而源数据又有固定的格式,则可以通过保存的ETL处理过程直接导入数据,从而省去了大量重复的手工整理工作。

关于Excel应用和数据处理工作,以后还会不定期发布一些应用技巧、工作方法和感悟。接下来的写作计划是关系型数据库和多种应用软件开发技术,如果Excel的性能和功能已经达不到数据处理工作的要求,相信接下来的内容可以提供帮助,大家可以继续关注,也可以转发给有需要的朋友们。感谢您的支持和鼓励!

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  1. CONNECT:[ UseTime:0.000420s ] mysql:host=127.0.0.1;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000633s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.013410s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000878s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000713s ]
  6. SELECT * FROM `set` [ RunTime:0.001774s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000752s ]
  8. SELECT * FROM `article` WHERE `id` = 466505 LIMIT 1 [ RunTime:0.004739s ]
  9. UPDATE `article` SET `lasttime` = 1775540684 WHERE `id` = 466505 [ RunTime:0.010070s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000315s ]
  11. SELECT * FROM `article` WHERE `id` < 466505 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.016796s ]
  12. SELECT * FROM `article` WHERE `id` > 466505 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001382s ]
  13. SELECT * FROM `article` WHERE `id` < 466505 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.013224s ]
  14. SELECT * FROM `article` WHERE `id` < 466505 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.006164s ]
  15. SELECT * FROM `article` WHERE `id` < 466505 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.007209s ]
0.147732s