sql – 数据透视表中的文本值？

我有一个表(在MysqL中)有3列：

Location    Category     supplier

   A        Computers    Company X
   A        Printers     Company Y
   B        Computers    Company X
   B        Printers     Company Y
   B        Software     Company Y
   C        Computers    Company Y
   C        Software     Company Z

现在我需要制作一个包含上述信息的矩阵,如下所示：

Computers      Printers       Software

A      Company X      Company Y
B      Company X      Company Y      Company Y
C      Company Y                     Company Z

最终我需要在Excel中使用它.

实际上我有不同数量的类别,所以在MysqL中使用每列的连接进行操作并不是一个好选择.我可以在PHP中编写一个函数,但我想知道是否有更优雅的解决方案.

我在Excel中查看了一个数据透视表,但它们似乎更适合数字作为值.但也许我忽视了一些事情,因为我自己从不使用Excel.

有任何想法吗？

解决方法

我遇到了与数据透视表相同的问题…完美的摘要,但不适用于文本矩阵.

我刚刚“解除了”我使用过的一些代码示例.这里我有A-D列中的数据,并在F列周围构建矩阵(在同一张纸中).

检查一下这是否有帮助.

我仍然无法让代码看起来正确,所以请注意很多代码在代码窗口之前启动.

代码示例1：

'Fill in the values

Sheets("TempFile").Select

ListRow = 1

MisMatchCounter = 0

Do Until Cells(ListRow,1).Value = ""

    ' Get table entry from third column of list.

    TableEntry = Cells(ListRow,3).Value

    On Error Resume Next

    If Err.Number > 0 Then MsgBox Err.Number

    ' Get position of product name within range of row titles.

    If TableEntry <> "" Then

        TableRow = Application.Match(Cells(ListRow,1),Range("F3:" & MYLastRowAddress),0) ' 2 rows less than reality

        ' Get position of product size within range of column titles.

        TableColumn = Application.Match(Cells(ListRow,2),Range("G2:" & MYLastColAddress),0)

        Set CellToFill = Range("F2").Offset(TableRow,TableColumn)

        ' If there's already an entry in the cell,separate it from the new entry with a comma and space.

        If Err.Number = 0 Then

            If CellToFill.Value <> "" Then

                CellToFill.Value = CellToFill.Value & ","

                CellToFill.Value = CellToFill.Value & TableEntry

            Else

                CellToFill.Value = TableEntry

            End If

        Else

            MisMatchCounter = MisMatchCounter + 1

            Sheets("Errors").Cells(MisMatchCounter,1).Value = ListRow

            Sheets("Errors").Cells(MisMatchCounter,2).Value = Cells(ListRow,1)

            Sheets("Errors").Cells(MisMatchCounter,3).Value = Cells(ListRow,2)

            Sheets("Errors").Cells(MisMatchCounter,4).Value = Cells(ListRow,3)

            Sheets("Errors").Cells(MisMatchCounter,5).Value = Cells(ListRow,4)

        End If

    End If

    On Error GoTo 0

    ListRow = ListRow + 1

Loop

代码示例2：

Sub CreateManualMatrix()

    Dim TableRow,TableColumn As Integer

    Dim TableEntry As String

    Dim CellToFill As Range

    'Sheet is called Lijst

    'Column A is names for top row

    'Column B is names for left column

    'Column C is value for Matrix



    'Matrix Top Row starts at H1

    'Matrix Left Column starts at G2



    MatrixLastColAddress = Range("H1").End(xlToRight).Address

    MatrixLastRow = Range("G65536").End(xlUp).Row

    LijstReadColumn = 3

    LijstCurrentRow = 2 'make 1 if no header is used

    Do Until Sheets("Lijst").Cells(LijstCurrentRow,1).Value = ""

        ' Get table entry from third column of list.

        TableEntry = Sheets("Lijst").Cells(LijstCurrentRow,LijstReadColumn).Value

        ' Get position of Employee name within Matrix.

        TableColumn = Application.Match(Sheets("Lijst").Cells(LijstCurrentRow,Range("H1:" & MatrixLastColAddress),0)

        ' Get position of Qualification Name within Matrix titles.

        TableRow = Application.Match(Sheets("Lijst").Cells(LijstCurrentRow,Range("G2:G" & MatrixLastRow),0)

        Set CellToFill = Range("G1").Offset(TableRow,separate it from the new entry with a comma and space.

        If CellToFill.Value <> "" Then CellToFill.Value = CellToFill.Value & ","

        ' Add the new entry to the cell.

        CellToFill.Value = CellToFill.Value & TableEntry

        LijstCurrentRow = LijstCurrentRow + 1

    Loop

End Sub

原文地址：https://www.jb51.cc/mssql/82945.html