Extract employees between 2 Hire Dates VBA and SQL - sql

Question

I have designed a macro which should extract from a workbook database all employees who were hired between 2 Dates.
Unfortunatley I'm getting a error mesage when I run the query.
Error:
Data Type mismatch in criteria expression.
I don't know how to fix the issue.
My regional settings:
Short date: dd.MM.yyyy
Long date: dddd, d.MMMM.yyyy
First day of week: Monday
Here the code:
Public Sub HIREDATE()
Application.ScreenUpdating = False
Dim cnStr As String
Dim rs As ADODB.Recordset
Dim query As String
Dim fileName As String
Dim pom1 As String
Dim x As String, w, e, blad As String, opis As String
Set w = Application.FileDialog(msoFileDialogFilePicker)
With w
.AllowMultiSelect = False
If .Show = -1 Then
fileName = w.SelectedItems(1)
Else
Exit Sub
End If
End With
cnStr = "Provider=Microsoft.ACE.OLEDB.12.0;" & _
"Data Source=" & fileName & ";" & _
"Extended Properties=Excel 12.0"
On Error GoTo Anuluj
x = InputBox("Wprowadz dwie daty od do oddzielając je przecinkiem -- Przykład 01.01.2015,01.05.2015")
strg = ""
k = Split(x, ",")
e = Application.CountA(k)
For m = LBound(k) To UBound(k)
If e = 1 Then
strg = strg & " [DEU1$].[Last Start Date] = '" & k(m) & "';"
Exit For
ElseIf e = 2 And e Mod 2 = 0 Then
strg = " [DEU1$].[Last Start Date] BETWEEN '" & CDate(k(m)) & "' AND '" & CDate(k(m + 1)) & "';"
Exit For
End If
Next m
On Error GoTo opiszblad
Set rs = New ADODB.Recordset
query = "SELECT [Emplid], [First Name]+ ' ' +[Last Name] From [DEU1$] WHERE" & strg
rs.Open query, cnStr, adOpenUnspecified, adLockUnspecified
Cells.Clear
Dim cell As Range, i As Long
With Range("A3").CurrentRegion
.Select
For i = 0 To rs.Fields.Count - 1
.Cells(1, i + 1).Value = rs.Fields(i).Name
Next i
Range("A4").CopyFromRecordset rs
.Cells.Select
.EntireColumn.AutoFit
End With
rs.Close
Application.ScreenUpdating = True
Exit Sub
Anuluj:
Exit Sub
opiszblad:
e = Err.Number
blad = Err.Source
opis = Err.Description
opisbledu = MsgBox(e & " " & blad & " " & opis, vbInformation, "Błąd")
Exit Sub
End Sub

Answer 1

You need properly formatted string expressions for your dates and to validate the user input:
If e = 1 And IsDate(k(m)) Then
strg = strg & " [DEU1$].[Last Start Date] = #" & Format(DateValue(k(m)), "yyyy\/mm\/dd") & "#;"
Exit For
ElseIf e = 2 And e Mod 2 = 0 And IsDate(k(m + 1)) Then
strg = " [DEU1$].[Last Start Date] BETWEEN #" & Format(DateValue(k(m)), "yyyy\/mm\/dd") & "# AND #" & Format(DateValue(k(m + 1)), "yyyy\/mm\/dd") & "#;"
Exit For
End If