Is there an array equivalent to vlookup in vba? - arrays

My vba code for a bunch of large ranges uses worksheetfunction.vlookup to find needed values. Ranges can be upwards of 25,000 cells, however, so this takes forever. Is there an equivalent function for arrays?
I've seen lots of SO answers that seem to address returning true/false in there is an exact string match. I need the string's location.

How about this ...
Function MyVLook(Arg As Range, Target As Range, ColIdx As Integer) As Range
Dim Idx As Integer
If Arg = "" Then
Set MyVLook = [ParamNothing]
Else
For Idx = 1 To Target.Rows.Count
If Target(Idx, 1) = Arg Then
If ColIdx < 0 Then
Set MyVLook = Target(Idx, 1).Offset(0, ColIdx)
Else
Set MyVLook = Target(Idx, ColIdx)
End If
Exit For
End If
Next Idx
End If
End Function
[ParamNothing] is a single cell range in a worksheet containing some application-specific text; otherwise this works almost like a normal VLOOKUP ... you can specify negative column offsets though (something I often miss in regular VLOOKUP), and I didn't built in a flag for range searches.

If you're only looking for the first occurrence try this:
Public Sub FindInRange()
Dim sValueToFind As String
Dim rRangeToSearch As Range
Dim rFoundRange As Range
sValueToFind = "The value I'm searching for"
With ThisWorkbook.Worksheets("Sheet1")
Set rRangeToSearch = .Range("A1:A1193")
Set rFoundRange = rRangeToSearch.Find( _
What:=sValueToFind, _
After:=rRangeToSearch.Cells(1, 1), _
LookIn:=xlValues, _
LookAt:=xlWhole, _
SearchDirection:=xlNext, _
MatchCase:=False)
If Not rFoundRange Is Nothing Then
MsgBox sValueToFind & " found in cell " & rFoundRange.Address & _
" and the value two cells to the right is " & rFoundRange.Offset(, 2), vbInformation + vbOKOnly
Else
MsgBox sValueToFind & " not found.", vbInformation + vbOKOnly
End If
End With
End Sub
This will find an exact match due to LookAt:=xlWhole and will not match the case due to MatchCase:=False. If you want to find the last occurrence use SearchDirection:=xlPrevious.
This mimics using Ctrl + F on the worksheet.
For more info on VBA FIND see: https://msdn.microsoft.com/en-us/library/office/ff839746.aspx

Related

How do I extract the last name from each cell in a name column and assign it to name array?

I think i've got a good start, but I'm having a tough time taking this to the finish line. Could someone help me out?
I have a name column(G) in my spreadsheet. I want to pull the only the last name out of each cell and assign it to an array called name_array.
I know that my If function is working because if I set each name_cell to the LastName variable it substitutes only the lastname in each cell of the column, but I cannot figure out how to assign that to the array.
Here is my code thus far. Can someone please help me out and point out what I'm missing?
Sub create_namear()
Dim name_array() As Variant
Dim name_range As Range
Dim name_cell As Range
Dim n As Long
Set name_range = ActiveSheet.Range("G2:G" & Range("G" & Rows.Count).End(xlUp).Row)
ReDim name_array(name_range.Cells.Count)
For Each name_cell In name_range.Cells
Dim Lastname As String
If InStr(name_cell, " ") > 0 Then
Lastname = Split(name_cell, " ")(1)
End If
name_array(n) = lastname.value
n = n + 1
Next name_cell
Debug.Print name_array(1)
End Sub
Name Column
Here is another way to achieve what you want without looping. I have commented the code so you should not have a problem understanding it.
BASIC LOGIC
To get the part after SPACE, you can use the formula =IFERROR(MID(G2,SEARCH(" ",G2,1),LEN(G2)-SEARCH(" ",G2,1)+1),"")
Now applying the formula in the entire range and getting the value using INDEX(FORMULA). You can find the explanation of this method in Convert an entire range to uppercase without looping through all the cells
CODE
Option Explicit
Sub Sample()
Dim ws As Worksheet
Dim rng As Range
Dim lRow As Long, i As Long
Dim FinalAr As Variant
'~~> Set this to the relevant sheet
Set ws = Sheet1
With ws
'~~> Find last row in col G
lRow = .Range("G" & .Rows.Count).End(xlUp).Row
'~~> Set your range
Set rng = .Range("G2:G" & lRow)
'~~> Get all the last names from the range and store them
'~~> in an array in 1 go!
FinalAr = Evaluate("index(IFERROR(MID(" & _
rng.Address & _
",SEARCH("" ""," & _
rng.Address & _
",1),LEN(" & _
rng.Address & _
")-SEARCH("" ""," & _
rng.Address & _
",1)+1),""""),)")
End With
'~~> Check the output
For i = LBound(FinalAr) To UBound(FinalAr)
Debug.Print ">"; FinalAr(i, 1)
Next i
End Sub
IN ACTION
ALTERNATIVE METHODS
Use Text To columns and then store the output in an array
Use Flash Fill to get the last names and then store the output in an array. One drawback of this method is that the names which do not have last name, it will show first name instead of a blank.
Sub create_namear()
Dim name_array() As Variant
Dim name_range As Range
Dim name_cell As Range
Dim n As Long
Set name_range = ActiveSheet.Range("G2:G" & Range("G" & Rows.Count).End(xlUp).Row)
ReDim name_array(0 to name_range.Cells.Count-1) '### 0-based array...
For Each name_cell In name_range.Cells
If InStr(name_cell, " ") > 0 Then
name_array(n) = Split(name_cell, " ")(1) 'simplify...
End If
n = n + 1
Next name_cell
Debug.Print name_array(1)
End Sub
Solution using Filter() (values with missing lastnames are excluded):
Sub ExtractLastNames()
Dim arr, name_array, i
arr = WorksheetFunction.Transpose(Range("G2:G" & Cells(Rows.Count, "G").End(xlUp).Row)) 'first, get the horizontal one-dimentional array from cells
name_array = Filter(arr, " ", True) 'second, filter out one-word and empty elements
For i = LBound(name_array) To UBound(name_array)
name_array(i) = Split(name_array(i))(1) 'third, replace name_array values with extracted lastnames
Next
Range("H2").Resize(UBound(name_array) + 1) = WorksheetFunction.Transpose(name_array) ' output
End Sub
Last Names to Array
The following will consider the substring after the last occurring space as the last name.
Option Explicit
Sub create_namear()
Dim ws As Worksheet: Set ws = ActiveSheet
Dim nRange As Range
Set nRange = ws.Range("G2:G" & ws.Range("G" & ws.Rows.Count).End(xlUp).Row)
Dim rCount As Long: rCount = nRange.Rows.Count
Dim nArray() As String: ReDim nArray(0 To rCount - 1)
Dim nCell As Range
Dim n As Long
Dim nmLen As Long
Dim LastSpacePosition As Long
Dim nmString As String
Dim LastName As String
For Each nCell In nRange.Cells
nmString = CStr(nCell.Value)
If InStr(1, nmString, " ") > 0 Then
LastSpacePosition = InStrRev(nCell.Value, " ")
nmLen = Len(nmString)
If LastSpacePosition < nmLen Then
LastName = Right(nmString, nmLen - LastSpacePosition)
nArray(n) = LastName
n = n + 1
End If
End If
Next nCell
If n = 0 Then Exit Sub
If n < rCount Then
ReDim Preserve nArray(0 To n - 1)
End If
Debug.Print "[" & LBound(nArray) & "," & UBound(nArray) & "]" _
& vbLf & Join(nArray, vbLf)
End Sub
Extension on Siddharth' s formula evaluation
These additions to Siddharth's valid code can be helpful, if there are less than 2 data rows in order to avoid
an unwanted evaluation of the title row 1:1 (in case of no data at all, see section 1.b) - This can be prevented by correcting a resulting row number lRow of only 1 to the actual data row start of 2.
Error 9 Subscript out of range (in case of a single element; see section 3.b) - Note that this requires to transform a 1-dim result to a 2-dim results array by means of a adequately dimensioned tmp array.
Furthermore I simplified the formula building to avoid repeated rng.Address insertions just to show another way of doing it (see section 2.).
Sub GetLastName()
'0. Set this to the relevant sheet
Dim ws As Worksheet: Set ws = Sheet1
With ws
'1. Define data range
'1. a) Find last row in col G
Dim lRow As Long
lRow = .Range("G" & .Rows.count).End(xlUp).Row
'1. b) Provide for empty data set ' << Added to avoid title row evaluation
If lRow = 1 Then lRow = 2
'1. c) Set your range
Dim rng As Range: Set rng = .Range("G2:G" & lRow)
'2. Define formula string parts ' << Modified for better readibility
Dim FormulaParts()
FormulaParts = Array("INDEX(IFERROR(MID(", _
",SEARCH("" "",", _
",1),LEN(", _
")-SEARCH("" "",", _
",1)+1),""""),)")
'3. Assign last names to 2-dim array results
'3. a) Get all the last names from the range and store them
Dim results
results = Evaluate(Join(FormulaParts, rng.Address))
End With
'3.b) Provide for single results '<< Added to avoid Error 9 Subscript o/Rng
If UBound(results) = 1 Then '<< Force single element into 2-dim array
Dim tmp(1 To 1, 1 To 1)
tmp(1, 1) = results(1)
results = tmp
End If
'h) Display in VB Editor's immediate window
Dim i As Long
For i = LBound(results) To UBound(results)
Debug.Print ">"; results(i, 1)
Next i
'i) Write last names to target '<< Added to demonstrate writing back
ws.Range("H2").Resize(UBound(results), 1) = results
End Sub

Increment different counters depending on array index value

I have a vast list of data in a worksheet (called MainDump). I have a procedure set up to assess this list and return certain values using the following setup:
Dim ws1 As Worksheet
Set ws1 = Worksheets("DashBoard")
Dim ws2 As Worksheet
Set ws2 = Worksheets("MainDump")
Dim cntr As Long
On Error GoTo ErrorHandler 'Got A lot of divide by zero errors if searchstring wasn't found
With Application.WorksheetFunction
ws1.Range("O4").Value = .CountIf(ws2.Range("E:E"), "*" & "CEOD" & "*")
ws1.Range("L4").Value = .CountIfs(ws2.Range("E:E"), "*" & "CEOD" & "*", ws2.Range("A:A"), "Yes") / ws1.Range("O4").Value
ws1.Range("M4").Value = .CountIfs(ws2.Range("E:E"), "*" & "CEOD" & "*", ws2.Range("B:B"), "Yes") / ws1.Range("O4").Value
ws1.Range("N4").Value = .CountIfs(ws2.Range("E:E"), "*" & "CEOD" & "*", ws2.Range("C:C"), "SA Present, WBDA Present") / ws1.Range("O4").Value
End With
cntr = cntr + 1
'^This proces is then copied and thus repeated a total of 76 times, as I want to check
'for 76 different values in ws2.Range("E:E"), resulting in a massive code
ErrorHandler:
If Err.Number = 6 Then
If ws1.Range("O" & cntr).Value = 0 Then
ws1.Range("L" & cntr).Value = "div. by zero"
ws1.Range("M" & cntr).Value = "div. by zero"
ws1.Range("N" & cntr).Value = "div. by zero"
End If
End If
Resume Next
I wrote this when I was a lot less experienced in VBA. Needless to say this code takes a lot of time to complete (Maindump counts about 98000 rows).
So I wanted to try do this work via an array.
My approach would be to define a counter for each string I want to check in the array indexes and then looping through the array and increment the corresponding counters when a string is found in the Array. My question is if there is a way to write that loop in the following form:
Dim LastRow1 As long
Dim DataArray() As Variant
Dim SearchString1, SearchString2, .... SearchString76 As String
Dim SearchString1Cntr, SearchString2Cntr, .... SearchString76Cntr As long
With ws2
LastRow1 = .Cells.Find(What:="*", After:=.Range("A1"), LookAt:=xlPart, LookIn:=xlFormulas, _
SearchOrder:=xlByRows, SearchDirection:=xlPrevious, MatchCase:=False).Row 'Gets the total row amount in the sheet
DataArray = .Range("A3:E" & LastRow1) 'puts selected range in Array
End With
For LastRow1 = Lbound(DataArray, 1) to Ubound(DataArray, 1)
'Start a For Each loop to check for all 76 strings
If Instr(1, DataArray(LastRow1, 5), SearchString > 0 Then 'SearchString is found so then
SearchStringCntr1 = SearchStringcntr1 + 1
'Where SearchStrinCntr1 is the counter related to the string checked for in the loop,
'so it switches when the SearchString changes
End If
'Next SearchString to check
Next LastRow1
So I want to try and use a flexible If statement in a For Next loop which checks the Array index for each SearchString and then increments the corresponding SearchStringCntr if the SearchString is found in the index, before looping to the next index. Is this possible? I would like to prevent making 76 different If/ElseIf statements for each SearchString + StringCntr and then use a counter to loop through them every time the code loops through the For LastRow1 / Next LastRow1 loop. Would love to hear your input.
Maybe this will help (might need some adjustments).
Create named range "Strings" somewhere in your workbook where you'll store all your strings that you're looking for
Option Explicit
Sub StringsCompare()
Dim LastRow1 As Long
Dim DataArray() As Variant, StringArray() As Variant
Dim Ws2 As Worksheet
Dim CompareStringsNo As Long, StringCounter As Long
Dim i As Long, j As Long
Dim aCell As Range
Dim SourceStr As String, SearchStr As String
Set Ws2 = ThisWorkbook.Sheets("Sheet1")
StringCounter = 1
With Ws2
'fill array with your strings to compare
CompareStringsNo = .Range("Strings").Rows.Count
ReDim StringArray(1 To CompareStringsNo, 1 To 2)
For Each aCell In .Range("Strings")
StringArray(StringCounter, 1) = aCell.Value
StringCounter = StringCounter + 1
Next aCell
'fill data array
LastRow1 = .Cells.Find(What:="*", After:=.Range("A1"), LookAt:=xlPart, LookIn:=xlFormulas, _
SearchOrder:=xlByRows, SearchDirection:=xlPrevious, MatchCase:=False).Row 'Gets the total row amount in the sheet
DataArray = .Range("A1:E" & LastRow1)
End With
'search data array
For i = LBound(DataArray, 1) To UBound(DataArray, 1)
SourceStr = DataArray(i, 5)
'search array with your strings
For j = LBound(StringArray) To UBound(StringArray)
SearchStr = StringArray(j, 1)
If InStr(1, SourceStr, SearchStr) > 0 Then
'if match is found increase counter in array
StringArray(j, 2) = StringArray(j, 2) + 1
'you can add exit for here if you want only first match
End If
Next j
Next i
For i = LBound(StringArray) To UBound(StringArray)
Debug.Print StringArray(i, 1) & " - " & StringArray(i, 2)
Next i
End Sub
I think the main task is being over-complicated.
To check how many times a string occurs within an array you could use a function like this:
Function OccurWithinArray(theArray As Variant, stringToCount As String) As Long
Dim strArr As String
strArr = Join(theArray, " ")
OccurWithinArray = (Len(strArr) - Len(Replace(strArr, stringToCount, _
vbNullString, , , vbTextCompare))) / Len(stringToCount)
End Function
...and a demonstration:
Sub Demo()
Dim test(1 To 3) As String
test(1) = "I work at the Dog Pound."
test(2) = "I eat dogfish regularly."
test(3) = "Steroidogenesis is a thing."
Debug.Print OccurWithinArray(test, "dog")
End Sub
How it works:
Join joins all the elements of the array into one big string.
Len returns the length of the text.
Replace temporarily replaces the removes all occurrences of the search term.
Len returns the "modified" length of the text.
The difference between the two Len's, divided by the length of the string being searched for, is the number aof occurrences of the string within the entire array.
This returns 3 since the search is case-insensitive.
To make the search case-sensitive, remove the word vbTextCompare (in which case this example would return 2.)

Dynamic Sheets(Array())

I want to select a array of sheets using the Sheets(Array()) method.
The sheets I want to select are named in the cells of my workheet Printlist.
The sheetnames are listed form column D to K.
Not all cells are filled so if I use the folowing function it errors on the rows with blank cells. How can I avoid this error:
This is what the sheet looks like:
And this is the code
Sub PDF_maken()
Dim ws As Worksheet
Dim LR As Long
Dim r As Range
Dim Mypath As String
Dim strarray As String
Set ws = ActiveWorkbook.Worksheets("Printlijst")
LR = ws.Cells(Rows.Count, 1).End(xlUp).Row
For Each r In ws.Range("B20:B20").Cells
If Not IsEmpty("B" & r.Row) Then
Mypath = ws.Range("B" & r.Row).Text
colCheck = 4
Do Until Cells(r.Row, colCheck) = ""
strarray = strarray & IIf(colCheck > 4, ",") & """" & Cells(r.Row, colCheck).Value & """"
colCheck = colCheck + 1
Loop
ActiveWorkbook.Sheets(strarray).Select
ActiveWorkbook.SelectedSheets.ExportAsFixedFormat _
Type:=xlTypePDF, _
Filename:=Mypath & ws.Range("C" & r.Row).Text & ".pdf", _
Quality:=xlQualityStandard, IncludeDocProperties:=True, _
IgnorePrintAreas:=False, OpenAfterPublish:=False
End If
Next r
End Sub
You can use a regular array rather than the Array() function to create the array. Then you can loop through the cells that contains sheet names and only add them if they're not blank. Here's an example.
Sub PDF_maken()
Dim ws As Worksheet
Dim lLastRow As Long
Dim rMap As Range
Dim sPath As String
Dim aSheets() As String
Dim lShCnt As Long
Dim rSh As Range
Set ws = ActiveWorkbook.Worksheets("Printlist")
lLastRow = ws.Cells(ws.Rows.Count, 1).End(xlUp).Row
For Each rMap In ws.Range("B2:B" & lLastRow).Cells
'Make sure there's a path
If Not IsEmpty(rMap.Value) Then
sPath = ws.Range("B" & rMap.Row).Text
're-dimension an array to hold all the sheet names
ReDim aSheets(1 To Application.WorksheetFunction.CountA(rMap.Offset(, 2).Resize(1, 8)))
'reset the counter
lShCnt = 0
'loop through all the cells that might have a sheet name
'and add them to the array
For Each rSh In rMap.Offset(, 2).Resize(1, 8).Cells
If Not IsEmpty(rSh.Value) Then
lShCnt = lShCnt + 1
aSheets(lShCnt) = rSh.Text
End If
Next rSh
ActiveWorkbook.Sheets(aSheets).Select
ActiveSheet.ExportAsFixedFormat xlTypePDF, sPath & rMap.Offset(0, 1).Text & ".pdf"
End If
Next rMap
ws.Select
End Sub
If you get Error 9: Subscript Out of Range there are three things to check:
The first one is that you spelled a sheet name wrong. Make sure there are no spaces or other funny business that makes it look like you have a good sheet name and you don't.
Next, make sure you qualify all of your references back to the workbook level. Depending on where your code is, unqualified references can point to different places. Don't ever use Sheets(). Always use ThisWorkbook.Sheets() or some other workbook reference. That will make sure you're not trying to access a sheet in a workbook that you didn't intend to.
Finally, you can get that error if you pass numbers to Sheets because your sheet names are numbers. Or rather they look like numbers, but they're really text. sheets(array(1234,4567)).select is different than sheets(array("1234","4567")).select. You have to pass strings to Sheets or you'll get that error. Kind of. You can pass numbers, but it will Select the sheets based on their index numbers rather than their names. That's why you have to be extra careful when your sheet names look like numbers.
Do a similar loop,
something like
colCheck=4
do until cells(r.row,colCheck)=""
strArray=strarray & iif(colCheck>4,",","") & cells(r.row,colCheck).value
colCheck=colCheck+1
loop
then you'll get something like a,b,c I've not tested this, so may need some tweaking. I'll revisit in a moment.

Returning Entire Array As String

I have an array that is populated if a formula produces an "X" in a cell that is part of a range:
Private Sub Worksheet_Change(ByVal Target As Range)
Dim Fault(10) As Boolean
For i = 1 To 10
If Range("A" & i).Value = "X" Then
Fault(i) = True
End If
Next i
MsgBox Fault 'VBA Errors Here With "Type Mismatch"
End Sub
My question is, is it possible to return an entire array as a string. So in the above example, I want the message box to return "0000000000" if there were no faults. If there was a fault in the 7th array, then it would return "0000001000".
My aim is to check that the string is always equal to "0000000000" in order to proceed. However, if there's a better way of checking if the entire array is false then that would be much easier.
Try this:
Sub JoinArray()
Dim Fault(9) As String, arrString As String
For i = 1 To 10
If Range("A" & i) = "X" Then
Fault(i - 1) = 1
Else
Fault(i - 1) = 0
End If
Next i
arrString = Join(Fault(), "")
If InStr(arrString, "1") Then
MsgBox "Fault Found"
Else
MsgBox "No faults found"
End If
End Sub
Notes:
Typically an array is zero indexed so Fault(9) allows for 10 slots e.g. Range("A1:A10")
The "" argument of Join means there are no space in the output i.e. 0011000000
Alternative method without using an array
Sub FindFaults()
Dim rng As Range, cl As Range, faultLocations As String
Set rng = Range("A1:A1000")
faultLocations = "Faults found in the following cell(s):" & vbCrLf & vbCrLf
If WorksheetFunction.CountIf(rng, "X") = 0 Then
MsgBox "No Fault Found"
Else
For Each cl In rng
If cl = "X" Then
faultLocations = faultLocations + "Cell: " & cl.Address & vbCrLf
End If
Next cl
End If
MsgBox faultLocations
End Sub

random function not working properly

I am having trouble with an asp page that contains a random function to display a random number of random records. The way I have the code now, as shown below, nothing appears on the page even though there are several records that match the criteria.
Out of 500 records I have in my database, about 70 match the criteria, but form some reason, they never seem to fall within the plist variable, to be used in the query.
When I change the max number to a lower number, say 10, I get an error message that the EOF has been found or no more records are available. Using debugging code, I couldnt find anything out of the ordinary, just the fact that from all the 100 records input into the plist, none of them match the records from the main criteria.
I am posting the entire code here. Maybe someone can catch what may be causing to not work properly.
Sub GetRandomDomains
dim conn, maxrecords, count, webname
dim randomrs, sql
'If (conn.State = adStateClosed) Then
OpenDB conn
'End If
count=0
maxrecords=100
KeywordColumnGetRandomKeywords conn, maxrecords, sql
If sql="" then
conn.close
set conn=nothing
Response.Write(" NOT AVAILABLE")
exit sub
end if
set randomrs=conn.execute(sql)
Response.Write("<ul id='catnav'>")
do While Not randomrs.EOF and count<maxrecords
If isnull(randomrs("sitename")) Then
webname=randomrs("domain")
Else
webname=randomrs("sitename")
End if
Response.Write "<li> " & webname &"</li>"
count=count+1
randomrs.movenext
loop
Response.Write("</ul>")
CloseSet randomrs
CloseDB conn
end sub
Sub KeywordColumnGetRandomKeywords (conn,maxrecords,sql)
dim i, id, index, plist, rs, sqlstr, sortstr
plist=""
Set rs=Server.CreateObject("ADODB.Recordset")
sqlstr="SELECT domainid FROM domains"
sqlstr=sqlstr
Debugwrite sqlstr, "sqlstr for random domains"
rs.Open sqlstr,conn,3,3
If rs.eof then
CloseSet rs
Response.Write(" EMPTY")
sql=""
exit sub
end if
Debugwrite rs("domainid"), "rs for random domains"
Dim arrData ' Array to Store Data
Dim arrSequence ' Array to Hold Random Sequence
Dim iArrayLooper ' Integer for Looping
Dim iarraysize ' Size of Data Array
If xdbasetype="Local" Then
iarraysize=cint(rs.recordcount)
else
iarraysize=cint(GetRecordcount (conn))
end if
Debugwrite GetRecordcount(conn), "getrecordcount for random domains array"
Debugwrite(IsArray(iarraysize)), "random domains count array"
'if (cint(GetRecordcount(conn)))= 0 or isnull(cint(GetRecordcount(conn))) then
'Exit Sub
'End if
redim arrdata(cint(iarraysize))
for i = 0 to iarraysize-1
arrData(i)=rs(0)
rs.movenext
next
rs.close
Set rs = Nothing
If iarraysize<maxrecords then
maxrecords=iarraysize
end if
' Get an array of numbers 0 to array size randomly sequenced.
arrSequence = Resequencearray(iArraySize)
for i = 0 to maxrecords-1
index=arrsequence(i)
id=arrdata(index)
if plist<>"" then
plist=plist & ","
end if
plist=plist & id
Next
sql="select domainid, domain, sitename,sitematch,altmatch from domains"
sql = sql & " WHERE restricted=0 and(sitematch like '%" & xsitematch & "%' or altmatch like '%" & xaltmatch & "%')"
sql = sql & " and domainid In (" & plist & ") "
Debugwrite sql, "first sql for random domains"
end sub
Function ResequenceArray(iArraySize)
Dim arrTemp()
Dim I
Dim iLowerBound, iUpperBound
Dim iRndNumber
Dim iTemp
' Set array size
ReDim arrTemp(iArraySize - 1)
Randomize
iLowerBound = LBound(arrTemp)
iUpperBound = UBound(arrTemp)
For I = iLowerBound To iUpperBound
arrTemp(I) = I
Next
' Loop through the array once, swapping each value
' with another in a random location within the array.
For I = iLowerBound to iUpperBound
iRndNumber = Int(Rnd * (iUpperBound - iLowerBound + 1))
' Swap Ith element with iRndNumberth element
iTemp = arrTemp(I)
arrTemp(I) = arrTemp(iRndNumber)
arrTemp(iRndNumber) = iTemp
Next 'I
' Return our array
ResequenceArray = arrTemp
End Function
'***********************************************************************
' get record count for mysql
'************************************************************************
Function GetrecordCount(conn)
dim sqlstr, rs, rcount
sqlstr="select count(domainid) FROM domains WHERE restricted=0 and (domaingroup='" & xdomaingroup & "' or altmatch like '%" & xaltmatch & "%')"
Debugwrite sqlstr, "sqlstr for random domains"
set rs=conn.execute(sqlstr)
if rs.eof then
rcount=0
else
rcount=rs(0)
end if
CloseSet rs
Getrecordcount=cint(rcount)
Debugwrite rcount, "getrecordcount for random domains"
End function
Okay. There may be a far more simple way of approaching this. Here's a piece of code that gets the data as an array - far simpler and we have much more control over what's in it...
'Constants relating to the following routines...
const C_NO_DATA = "NO_DATA" 'Used when no data is returned to a consuming routine
const C_ERROR = "ERROR" 'Used when an error is generated
'GetDataSet
' Returns a table of data based on the supplied SQL statement and connection string.
'Parameters:
' sqlString (string) - The SQL string to be sent.
' connString (string) - The database connection string.
'Usage:
' dataSet = GetDataSet(sqlString, connString)
'Description:
' This function generates a table of information in a 2 dimensional array. The first dimension represents the columns
' and the second the rows. If an error occurs while the routine is executing the array and the base index (0,0) is set
' to C_ERROR, (0,1) to the VBScript error index, and (0,2) to the VBScript error description.
function GetDataSet(sqlString, connString)
'Initialise...
dim returnVal, rsData
on error resume next
'Define and open the recordset object...
set rsData = Server.CreateObject("ADODB.RecordSet")
rsData.Open sqlString, connString, 0, 1, 1
'Initialise an empty value for the containing array...
redim returnVal(0,0)
returnVal(0,0) = C_NO_DATA
'Deal with any errors...
if not rsData.EOF and not rsData.BOF then
'Store the data...
returnVal = rsData.GetRows()
'Tidy up...
rsData.close
set rsData = nothing
select case err.number
case 3021 'No data returned
'Do nothing as the initial value will still exist (C_NO_DATA)
case 0 'No error
'Do nothing as data has been returned
case else
redim returnVal(4,0)
returnVal(0,0) = C_ERROR
returnVal(1,0) = err.number
returnVal(2,0) = err.description
returnVal(3,0) = sqlString
returnVal(4,0) = connString
end select
end if
on error goto 0
'Return the array...
GetDataSet = returnVal
end function
Okay, so we read the data we're after into an array. Note that I don't know where your xaltmatch and xsitematch variables come from so you'll need to supply these at some point...
Dim ds, sql
sql = _
"SELECT " & _
"domainid, " & _
"domain, " & _
"sitename, " & _
"sitematch, " & _
"altmatch " & _
"FROM " & _
"domains " & _
"WHERE " & _
"restricted=0 AND " & _
"(sitematch LIKE '%" & xsitematch & "%' OR " & _
"altmatch LIKE'%" & xaltmatch & "%') AND " & _
"domainid IN (" & plist & ") "
ds = GetDataSet(sql, conn)
The ds variable now contains an array of elements pulled from the database. All we need to do now is loop through the required number of times...
dim row, rows, used, randoms, col, cols, rc, cc
rows = UBound(ds, 2) 'Get the upper bound of the second array dimension
cols = UBound(ds, 1) 'Get the number of columns for writing to the page
randoms = 70 'Total number of randoms we need
used = ","
for rc = 1 to randoms
'Just in case we don't want to repeat the same row...
do
row = int(rnd(1)*rows) 'Zero based - we don't need to add 1
until instr(used, "," & row & ",")) = 0
'Add our random row to the list...
used = used & row & ","
'Write our output to the page...
response.write("<table>")
for cc = 0 to cols
response.write("<tr>")
response.write("<td>")
response.write(ds(cc, row))
response.write("</td>")
response.write("</tr>")
next 'cc
response.write("</table>")
next 'rc
The GetDataSet code is part of my stock functions, so I know that works, but I will hold my hand up and say that I haven't tested the rest of it.
Have a bash with this one, Luis, and let me know how you get on.

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