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Is there any way to extract the names of columns from an excel sheet without actually loading the sheet into the RAM?


By : jaya
Date : October 14 2020, 02:21 PM
Any of those help I'm working on a R Project and I wanna check if there is any way to extract the column names without loading the entire excel sheet to the RAM.
code :
library(xlsx)

out<- read.xlsx(file.xlsx, sheetIndex = 1,startRow = 1, endRow = 2, header= T) 


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Excel VBA Match First & Last Names from sheet 1 to sheet 2 and delete all matches on sheet 1


By : traxonja
Date : March 29 2020, 07:55 AM
To fix this issue Putting the politics of the site's intentions aside for a minute, see if this can get you started on applying some VBA for yourself.
code :
Sub ClearSelection_and_DeDupe()
    Dim r As Long, v As Variant, ws3 As Worksheet

    Application.ScreenUpdating = False
    Application.EnableEvents = False

    With Sheets("ADULT Sign On Sheet")
        For r = 6 To 330 Step 36
            .Cells(r, 5).Resize(31, 2).ClearContents
        Next r
    End With

    On Error GoTo fìn
    Set ws3 = Sheets("Sheet 3")
    With Sheets("Sheet 2")
        r = Application.Max(.Cells(Rows.Count, 5).End(xlUp).row, .Cells(Rows.Count, 6).End(xlUp).row)
        v = InputBox(prompt:="How many rows to look at?", Default:=r)
        For r = Application.Sum(v) To 2 Step -1
            If CBool(Application.CountIfs(ws3.Columns(2), .Cells(r, 5).Value, ws3.Columns(3), .Cells(r, 6).Value)) Then _
                .Rows(r).EntireRow.Delete
        Next r
    End With
fìn:
    Set ws3 = Nothing
    Application.EnableEvents = True
    Application.ScreenUpdating = True
End Sub
Sheets("ADULT Sign On Sheet").Range("E6:F36,E42:F72,E78:F108,E114:F144,E150:F180,E186:F216,E222:F252,E258:F288,E294:F324,E330:F360").ClearContents

Excel - sheet names equal to cell (but the cells giving name to the sheets are all in the same sheet)


By : Bilel Harrabi
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , You could make it event triggered.
1) Place the below code in the worksheet object for the "Names" tab.
code :
Private Sub Worksheet_Change(ByVal Target As Range)

    Dim sheetName As String
    Dim sheetCodeName As String

    If Target.Column = "2" Then
        sheetName = Target.value
        sheetCodeName = Target.Offset(0, -1).value

        For Each Sheet In ActiveWorkbook.Worksheets
            If Sheet.CodeName = sheetCodeName Then

                On Error GoTo INVALIDCOLUMNNAME:
                Sheet.name = sheetName
                On Error GoTo 0

            End If

        Next Sheet

    End If

Exit Sub

INVALIDCOLUMNNAME:
msgbox "Invalid Column Name"

End Sub

How to consolidate data of Specific columns from multiple sheet to one sheet using excel macro when the required columns


By : nguyen duy khuong
Date : March 29 2020, 07:55 AM
will help you This does as I interpreted your question. This should provide you a starting point if your requirements are a little different.
Attach the following code to your button ...
code :
Option Explicit

Sub consolidate()
    Dim myInSht As Worksheet
    Dim myOutSht As Worksheet
    Dim aRow As Range
    Dim aCol As Range
    Dim myInCol As Range
    Dim myOutCol As Range
    Dim cell As Range
    Dim iLoop As Long, jLoop As Long

    jLoop = 2

' loop through the worksheets
    For Each myInSht In ActiveWorkbook.Worksheets
' pick only the worksheets of interest
        If myInSht.Name = "PrjA" Or myInSht.Name = "PrjB" Or myInSht.Name = "PrjC" Then
' find the columns of interest in the worksheet
            For Each aCol In myInSht.UsedRange.Columns
                Set myOutCol = Nothing
                If aCol.Cells(1, 1).Value = "Defect id" Then Set myOutCol = Sheets("Consolidated").Range("A:A")
                If aCol.Cells(1, 1).Value = "Defect summary" Then Set myOutCol = Sheets("Consolidated").Range("B:B")
                If aCol.Cells(1, 1).Value = "severity" Then Set myOutCol = Sheets("Consolidated").Range("C:C")
                If aCol.Cells(1, 1).Value = "priority" Then Set myOutCol = Sheets("Consolidated").Range("D:D")
                If aCol.Cells(1, 1).Value = "status" Then Set myOutCol = Sheets("Consolidated").Range("E:E")

                If Not myOutCol Is Nothing Then
' don't move the top line, it contains the headers - no data
                    Set myInCol = aCol
                    Set myInCol = myInCol.Offset(1, 0).Resize(myInCol.Rows.Count - 1, myInCol.Columns.Count)
' transfer data from the project tab to the consolidated tab
                    iLoop = jLoop
                    For Each aRow In myInCol.Rows
                        myOutCol.Cells(iLoop, 1).Value = aRow.Cells(1, 1).Value
                        iLoop = iLoop + 1
                    Next aRow
                End If
            Next aCol
        End If
        If iLoop > jLoop Then jLoop = iLoop
    Next myInSht
End Sub

Reading each sheet of excel workbook in separate dataframes and rename the columns by prefixing the sheet names before t


By : Yarden Baron
Date : March 29 2020, 07:55 AM
To fix the issue you can do You were almost there. What you need to do is to rename the columns in your loop and to use assign to create the variable in the global environment
code :
library(readxl)

datasets <- readxl_example("datasets.xlsx")

read_allsheets_from_excel <- function(filename) {
   sheets <- excel_sheets(filename)
   setNames(lapply(sheets, function(.) {
      tbl <- read_excel(filename, sheet = .)
      names(tbl) <- paste(., names(tbl), sep = "_")
      tbl
   }), sheets)
}

# read now
allSheets <- read_allsheets_from_excel(datasets)

lapply(names(allSheets), function(nam) 
    assign(nam, allSheets[[nam]], envir = .GlobalEnv))
ls()
# [1] "allSheets"                 "chickwts"                 
# [3] "datasets"                  "iris"                     
# [5] "mtcars"                    "quakes"                   
# [7] "read_allsheets_from_excel"

Can I use an SQL statement to extract data from sheet A + sheet B and dump in in sheet C using only Excel


By : Poornima Ragavi
Date : March 29 2020, 07:55 AM
wish helps you Here's the simplest of queries against Excel which may get you started:
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