为什么在Excel中使用CONCATENATE vs＆？

我注意到，"EXEC MySproc," & "arg, " & "arg2"这与=CONCATENATE("EXEC MySproc,", "arg,", "arg2") 包括使用评估功能，功能etecetera的能力基本相同。使用=CONCATENATE()vs 的用例是什么&？

适用于喜欢打字的人。做事之类的听众可能是=Sum((A1*A2)-A3)而不是=(A1*A2)-A3。（是的，这些人存在，我不知道他们为什么这样做）

它还提供了绝佳的机会来使用VBA创建您的第一个用户定义函数，以创建比Concatenate（）更有用的功能。

Excel 2016（带有Office 365订阅）具有一个称为TextJoin（）的新函数，该函数以分隔符和范围作为参数，并且比将＆符号和分隔符作为文本字符串键入要快得多。现在，这很有用。

可能是因为他们正在使用“插入功能”按钮。

当我用左手进餐并且只是在做一些低级的配方时，或者当我使用触摸设备而又不想打扰在触摸屏上的符号，字母和数字之间切换时，有时会这样做。

它仅具有历史和兼容性原因。以前的Excel版本不支持一种格式，其他电子表格工具（例如Google Docs，Apple Numbers或Open Office）不支持另一种格式。

选择您喜欢的任何一个。

请注意，根据您的保存格式，Excel需要CONCATENATE()比保存更多的空间&。

我认为，有选择地使用串联和“＆”号可以产生更清晰的公式。

地址详细信息的这种组合，使用的混合形式CONCATENATE，&对我来说似乎更清晰：

=CONCATENATE(StreetNumber," ",StreetName," ",StreetType) & CHAR(10) & CONCATENATE(CityName," ",StateCode," ",ZipCode) & CHAR(10) & CountryName

比独家使用&：

=StreetNumber & " " & StreetName & " " & StreetType & CHAR(10) & CityName & " " & StateCode & " " & ZipCode & CHAR(10) & CountryName

并独家使用CONCATENATE

=CONCATENATE(StreetNumber," ",StreetName," ",StreetType,CHAR(10),CityName," ",StateCode," ",ZipCode,CHAR(10),CountryName)

再说一次，我认为像UDF这样的BuildAddress解决方案将是一个更好的解决方案（并且可以更好地处理国际化领域中地址格式的微妙之处，尽管我尚未实现）。

Public Function BuildAddress(ByVal StreetNumber As String, ByVal StreetName As String, _
    ByVal StreetType As String, ByVal CityName As String, ByVal StateCode As String, _
    ByVal ZipCode As String, ByVal CountryName As String) As String


    BuildAddress = StreetNumber & " " & StreetName & " " & StreetType & vbCrLf & _
                   CityName & " " & StateCode & " " & ZipCode & vbCrLf & _
                   CountryName

End Function

但是也许还有另一个示例，其中包括& 在字符串文字中的使用，可以更好地说明难以读取强制自己专门使用运算符的公式的困难：

=A1&"A2&A3&A4"&A5

最好写成：

=CONCATENATE(A1,"A2&A3&A4",A5)

但是性能才是最重要的，并且取决于要连接的参数的数量以及每个参数的长度，该CONCATENATE函数的性能似乎比连接运算符高4到6倍。串联255个参数10,000次。我不建议使用长度大于32的参数字符串，否则您可能会用完内存/崩溃Excel。

这是一个粗略的计时机制：

Option Explicit

Const ConcatenationOperatorFormula As String = _
  "=$A$1&$A$2&$A$3&$A$4&$A$5&$A$6&$A$7&$A$8&$A$9&$A$10&$A$11&$A$12&$A$13&$A$14&$A$15&$A$16&$A$17&$A$18&$A$19&$A$20&$A$21&$A$22&$A$23&$A$24&$A$25&$A$26&$A$27&$A$28&$A$29&$A$30&$A$31&$A$32&$A$33&$A$34&$A$35&$A$36&$A$37&$A$38&$A$39&$A$40&$A$41&$A$42&$A$43&$A$44&$A$45&$A$46&$A$47&$A$48&$A$49&$A$50&$A$51&$A$52&$A$53&$A$54&$A$55&$A$56&$A$57&$A$58&$A$59&$A$60&$A$61&$A$62&$A$63&$A$64&$A$65&$A$66&$A$67&$A$68&$A$69&$A$70&$A$71&$A$72&$A$73&$A$74&$A$75&$A$76&$A$77&$A$78&$A$79&$A$80&$A$81&$A$82&$A$83&$A$84&$A$85&$A$86&$A$87&$A$88&$A$89&$A$90&$A$91&$A$92&$A$93&$A$94&$A$95&$A$96&$A$97&$A$98&$A$99&$A$100&" & _
  "$A$101&$A$102&$A$103&$A$104&$A$105&$A$106&$A$107&$A$108&$A$109&$A$110&$A$111&$A$112&$A$113&$A$114&$A$115&$A$116&$A$117&$A$118&$A$119&$A$120&$A$121&$A$122&$A$123&$A$124&$A$125&$A$126&$A$127&$A$128&$A$129&$A$130&$A$131&$A$132&$A$133&$A$134&$A$135&$A$136&$A$137&$A$138&$A$139&$A$140&$A$141&$A$142&$A$143&$A$144&$A$145&$A$146&$A$147&$A$148&$A$149&$A$150&$A$151&$A$152&$A$153&$A$154&$A$155&$A$156&$A$157&$A$158&$A$159&$A$160&$A$161&$A$162&$A$163&$A$164&$A$165&$A$166&$A$167&$A$168&$A$169&$A$170&$A$171&$A$172&$A$173&$A$174&$A$175&$A$176&$A$177&$A$178&$A$179&$A$180&$A$181&$A$182&$A$183&$A$184&$A$185&$A$186&$A$187&$A$188&$A$189&$A$190&$A$191&$A$192&$A$193&$A$194&$A$195&$A$196&$A$197&$A$198&$A$199&$A$200&" & _
  "$A$201&$A$202&$A$203&$A$204&$A$205&$A$206&$A$207&$A$208&$A$209&$A$210&$A$211&$A$212&$A$213&$A$214&$A$215&$A$216&$A$217&$A$218&$A$219&$A$220&$A$221&$A$222&$A$223&$A$224&$A$225&$A$226&$A$227&$A$228&$A$229&$A$230&$A$231&$A$232&$A$233&$A$234&$A$235&$A$236&$A$237&$A$238&$A$239&$A$240&$A$241&$A$242&$A$243&$A$244&$A$245&$A$246&$A$247&$A$248&$A$249&$A$250&$A$251&$A$252&$A$253&$A$254&$A$255"

Const ConcatenateFunctionFormula As String = _
  "=CONCATENATE($A$1,$A$2,$A$3,$A$4,$A$5,$A$6,$A$7,$A$8,$A$9,$A$10,$A$11,$A$12,$A$13,$A$14,$A$15,$A$16,$A$17,$A$18,$A$19,$A$20,$A$21,$A$22,$A$23,$A$24,$A$25,$A$26,$A$27,$A$28,$A$29,$A$30,$A$31,$A$32,$A$33,$A$34,$A$35,$A$36,$A$37,$A$38,$A$39,$A$40,$A$41,$A$42,$A$43,$A$44,$A$45,$A$46,$A$47,$A$48,$A$49,$A$50,$A$51,$A$52,$A$53,$A$54,$A$55,$A$56,$A$57,$A$58,$A$59,$A$60,$A$61,$A$62,$A$63,$A$64,$A$65,$A$66,$A$67,$A$68,$A$69,$A$70,$A$71,$A$72,$A$73,$A$74,$A$75,$A$76,$A$77,$A$78,$A$79,$A$80,$A$81,$A$82,$A$83,$A$84,$A$85,$A$86,$A$87,$A$88,$A$89,$A$90,$A$91,$A$92,$A$93,$A$94,$A$95,$A$96,$A$97,$A$98,$A$99,$A$100," & _
  "$A$101,$A$102,$A$103,$A$104,$A$105,$A$106,$A$107,$A$108,$A$109,$A$110,$A$111,$A$112,$A$113,$A$114,$A$115,$A$116,$A$117,$A$118,$A$119,$A$120,$A$121,$A$122,$A$123,$A$124,$A$125,$A$126,$A$127,$A$128,$A$129,$A$130,$A$131,$A$132,$A$133,$A$134,$A$135,$A$136,$A$137,$A$138,$A$139,$A$140,$A$141,$A$142,$A$143,$A$144,$A$145,$A$146,$A$147,$A$148,$A$149,$A$150,$A$151,$A$152,$A$153,$A$154,$A$155,$A$156,$A$157,$A$158,$A$159,$A$160,$A$161,$A$162,$A$163,$A$164,$A$165,$A$166,$A$167,$A$168,$A$169,$A$170,$A$171,$A$172,$A$173,$A$174,$A$175,$A$176,$A$177,$A$178,$A$179,$A$180,$A$181,$A$182,$A$183,$A$184,$A$185,$A$186,$A$187,$A$188,$A$189,$A$190,$A$191,$A$192,$A$193,$A$194,$A$195,$A$196,$A$197,$A$198,$A$199,$A$200," & _
  "$A$201,$A$202,$A$203,$A$204,$A$205,$A$206,$A$207,$A$208,$A$209,$A$210,$A$211,$A$212,$A$213,$A$214,$A$215,$A$216,$A$217,$A$218,$A$219,$A$220,$A$221,$A$222,$A$223,$A$224,$A$225,$A$226,$A$227,$A$228,$A$229,$A$230,$A$231,$A$232,$A$233,$A$234,$A$235,$A$236,$A$237,$A$238,$A$239,$A$240,$A$241,$A$242,$A$243,$A$244,$A$245,$A$246,$A$247,$A$248,$A$249,$A$250,$A$251,$A$252,$A$253,$A$254,$A$255)"

Const ARGUMENT_STRING_LENGTH As Long = 1

Sub test2()

  Dim start As Single

  'Disable app events to exclude UI/calculation artefacts
  Application.ScreenUpdating = False
  Application.EnableEvents = False
  Application.Calculation = xlCalculationManual

  Dim inputs As Range
  Set inputs = Range("A1:A255")

  Dim operatorRange As Range
  Set operatorRange = Range("B1:B10000")

  Dim functionRange As Range
  Set functionRange = Range("C1:C10000")

  'Reset the range values/formulas
  inputs.Value2 = ""
  operatorRange.Formula = ConcatenationOperatorFormula
  functionRange.Formula = ConcatenateFunctionFormula

  'Change the inputs to invalidate the calculation results
  inputs.Value2 = String(ARGUMENT_STRING_LENGTH, "B")

  'Time the calculation of operator formulas
  start = Timer
  operatorRange.Calculate
  Debug.Print "Operator Calculation", ARGUMENT_STRING_LENGTH, FormatNumber(Timer - start, 8)

  'Time the calculation of function formulas
  start = Timer
  functionRange.Calculate
  Debug.Print "Function Calculation", ARGUMENT_STRING_LENGTH, FormatNumber(Timer - start, 8)

  'Reset the range values to empty
  inputs.Value2 = ""
  operatorRange.Value2 = vbNullString
  functionRange.Value2 = vbNullString

  'Restore App defaults
  Application.ScreenUpdating = True
  Application.EnableEvents = True
  Application.Calculation = xlCalculationAutomatic

End Sub

然后根据参数字符串的长度得出结果：

Method                 String Length   Seconds
---------------------  --------------  -----------
Function Calculation   1               0.06640625
Operator Calculation   1               0.21484380
Function Calculation   10              0.09765625
Operator Calculation   10              0.47265630
Function Calculation   32              0.17578130
Operator Calculation   32              1.17968800

但是后来，我们甚至都没有讨论过房间里的大象。您正在使用串联构建SQL命令。不要那样做 您正在执行一个接受参数的存储过程。除非您已经清理了输入内容（我猜您还没有），否则使用串联构建SQL字符串将要求进行SQL注入攻击。您最好公开一个称为JohnnyDropTables... 的UDF 。

这是语义领域的差异。串联是电子表格功能的名称。与号是从Visual Basic借用的串联运算符。从未开放使用VBA的人们会发现，该功能比VBA语法更易于使用。这与保存热键，图标和菜单选项的原因相同，这使得软件更易于使用。

我都用。

对于我可能需要进行视觉检查的长列表，逗号比“＆”符号占用更少的眼睛空间。

阅读用逗号分隔的单元格列表要比用＆符号分隔的单元格更容易阅读，尤其是因为一个＆符号看起来（一天15小时后）太像$。

这为CONCATENATE提供了有意义的作用。

但是-同意-没有速度优势，也没有任何功能差异。

一种特殊的用例是=CONCATENATE(A1:A10)比短很多=A1&A2&A3&A4&A4&A6&A7&A8&A9&A10。它显然也更正确（事实上，示例&版本有故意的错误）。

我首先尝试了此方法，但是我使用的是德语的Office Excel。 TEXTKETTE的行为与我描述的相同，但文档显示它是一个新功能，并且将VERKETTEN其替换（将与等效于德语CONCATENATE）。

我没有在这里看到真正的答案，但确实有一些见识。（对于以后可能会查询此答案的任何人）

“连接”是一个较旧的遗留函数，其功能与“＆”相同，后来又添加了“＆”以确保编程语言的一致性。但是，“ Concatenate”已被“ Concat”替换为支持范围，因此您可以组合A1：A10而不需要任何自定义脚本。“＆”仍然不允许范围，仅采用与“连接”功能相同的方式获取第一个单元格。因此，如果组合了一个范围，则“ Concat”将为之前两种编码方式不同的样式带来额外的功能更改。在使用非范围必需的组合字符串（如您希望将其键入）时，基本上使“ Concatenate”和“＆”成为首选项。

https://support.office.com/zh-cn/article/concat-function-9b1a9a3f-94ff-41af-9736-694cbd6b4ca2

Microsoft说RTFM使用&。

顺便说一句，使用SUM运算符时，您将获得不同的答案。