asked on

next field in database

i loop through entries in a database with a while loop
but can i assign a variable to be the next or previous date value?

currentdate = Recordset1.Fields.Item("udate").Value

ie database is

date number
24/04/01 9
23/04/01 5
22/04/01 2
21/04/01 7

and i am at
22/04/01 2

i want to be able to access the
23/04/01 5
and maybe the
21/04/01 7
if possible

thanks

Nitin Sontakke

Sorry, i didn't get the question.

If you order your resultset, you can always go back and forth as you wish anyway.

If you are saying that record may or may not exist, don't loop thru record set at all. Instead loop thru the dates and in your loop write as follows:

dateIndex = formatDateTime("March 31, 2001"
'Assume you are on first record of rs here...
For intIndex = 1 to 30
newDate = dateAdd("d", intIndex, dateIndex)
If Not Recordset1.EoF Then
If Recordset1.Fields.Item("udate").Value = newDate Then
'Date found in recordset...
Recordset1.MoveNext
Else
'...
End If
Else
'---
End If
Next

Michel Sakr

rs.movenext
NextVar = Recordset1("udate")
rs.moveprevious
rs.moveprevious
PreviousVar = Recordset1("udate")
rs.movenext
'proceed as usual

Michel Sakr

Recordset1.movenext
NextVar = Recordset1("udate")
Recordset1.moveprevious
Recordset1.moveprevious
PreviousVar = Recordset1("udate")
Recordset1.movenext
'proceed as usual

Michel Sakr

you can set a check if the recordset reached BOF or EOF in the code

yeggstry

with the standard cursor, that only goes down the table, you can use objRS.MoveNext.

In order to move back through the recordset, you must make sure that the recordset is set to a scrollable cursor. Then you can use:

objRS.MoveFirst
objRS.MoveLast
objRS.MoveNext
objRS.MovePrevious
objRS.Move

yeggstry

The scrollable cursor can be adOpenKeyset

mammouth

(You can use getrows)

set Rs=dataconn.open("select...from...where...")
ArrayResult=Rs.GetRows
Rs.Close
SET Rs=Nothing

ArrayResult will contain all value of your select in a arrow example

Select var1, var2 from table

if table containt

var1 var2
---- ----
a 5
b 7
c 2

ArrayResult(0,0)=a
ArrayResult(0,1)=5
ArrayResult(1,0)=b
...
ArrayResult(2,2)=2

The second number is the field and first is line number of your result

You can use getrows with many field, many rows and any type of field (number, string...)

it's faster and you never get lost connection to database because you close it after the .getrows

amoran

ASKER

Silvers5 your solution looks good but i get this error

ADODB.Recordset error '800a0c93'
Operation is not allowed in this context.

/logs-break-old.asp, line 247

when i put in the code

Recordset1.movenext
nextdate = Recordset1("udate")
'nextdate = Recordset1.Fields.Item("udate").Value
Recordset1.moveprevious

i tried the commented line too

thanks

Nitin Sontakke

Please post the code with which you are opening the recordset. It is at that time that you have to specify that you want to traverse the recordset back and forth.

The default is forward only.

amoran

ASKER

<%@LANGUAGE="VBSCRIPT"%> <%
set Recordset1 = Server.CreateObject("ADODB.Recordset")
Recordset1.ActiveConnection = "dsn=authentik-new;"
Recordset1.Source = "SELECT * FROM userlog ORDER BY id DESC"
Recordset1.CursorType = 0
Recordset1.CursorLocation = 2
Recordset1.LockType = 3
Recordset1.Open
Recordset1_numRows = 0
%><%
Dim Repeat1__numRows
Repeat1__numRows = 2000
Dim Repeat1__index
Repeat1__index = 0
Recordset1_numRows = Recordset1_numRows + Repeat1__numRows
%> <%
' *** Recordset Stats, Move To Record, and Go To Record: declare stats variables

' set the record count
Recordset1_total = Recordset1.RecordCount

' set the number of rows displayed on this page
If (Recordset1_numRows < 0) Then
Recordset1_numRows = Recordset1_total
Elseif (Recordset1_numRows = 0) Then
Recordset1_numRows = 1
End If

' set the first and last displayed record
Recordset1_first = 1
Recordset1_last = Recordset1_first + Recordset1_numRows - 1

' if we have the correct record count, check the other stats
If (Recordset1_total <> -1) Then
If (Recordset1_first > Recordset1_total) Then Recordset1_first = Recordset1_total
If (Recordset1_last > Recordset1_total) Then Recordset1_last = Recordset1_total
If (Recordset1_numRows > Recordset1_total) Then Recordset1_numRows = Recordset1_total
End If
%> <%
' *** Move To Record and Go To Record: declare variables

Set MM_rs = Recordset1
MM_rsCount = Recordset1_total
MM_size = Recordset1_numRows
MM_uniqueCol = ""
MM_paramName = ""
MM_offset = 0
MM_atTotal = false
MM_paramIsDefined = false
If (MM_paramName <> "") Then
MM_paramIsDefined = (Request.QueryString(MM_paramName) <> "")
End If
%> <%
' *** Move To Record: handle 'index' or 'offset' parameter

if (Not MM_paramIsDefined And MM_rsCount <> 0) then

' use index parameter if defined, otherwise use offset parameter
r = Request.QueryString("index")
If r = "" Then r = Request.QueryString("offset")
If r <> "" Then MM_offset = Int(r)

' if we have a record count, check if we are past the end of the recordset
If (MM_rsCount <> -1) Then
If (MM_offset >= MM_rsCount Or MM_offset = -1) Then ' past end or move last
If ((MM_rsCount Mod MM_size) > 0) Then ' last page not a full repeat region
MM_offset = MM_rsCount - (MM_rsCount Mod MM_size)
Else
MM_offset = MM_rsCount - MM_size
End If
End If
End If

' move the cursor to the selected record
i = 0
While ((Not MM_rs.EOF) And (i < MM_offset Or MM_offset = -1))
MM_rs.MoveNext
i = i + 1
Wend
If (MM_rs.EOF) Then MM_offset = i ' set MM_offset to the last possible record

End If
%> <%
' *** Move To Record: if we dont know the record count, check the display range

If (MM_rsCount = -1) Then

' walk to the end of the display range for this page
i = MM_offset
While (Not MM_rs.EOF And (MM_size < 0 Or i < MM_offset + MM_size))
MM_rs.MoveNext
i = i + 1
Wend

' if we walked off the end of the recordset, set MM_rsCount and MM_size
If (MM_rs.EOF) Then
MM_rsCount = i
If (MM_size < 0 Or MM_size > MM_rsCount) Then MM_size = MM_rsCount
End If

' if we walked off the end, set the offset based on page size
If (MM_rs.EOF And Not MM_paramIsDefined) Then
If (MM_offset > MM_rsCount - MM_size Or MM_offset = -1) Then
If ((MM_rsCount Mod MM_size) > 0) Then
MM_offset = MM_rsCount - (MM_rsCount Mod MM_size)
Else
MM_offset = MM_rsCount - MM_size
End If
End If
End If

' reset the cursor to the beginning
If (MM_rs.CursorType > 0) Then
MM_rs.MoveFirst
Else
MM_rs.Requery
End If

' move the cursor to the selected record
i = 0
While (Not MM_rs.EOF And i < MM_offset)
MM_rs.MoveNext
i = i + 1
Wend
End If
%> <%
' *** Move To Record: update recordset stats

' set the first and last displayed record
Recordset1_first = MM_offset + 1
Recordset1_last = MM_offset + MM_size
If (MM_rsCount <> -1) Then
If (Recordset1_first > MM_rsCount) Then Recordset1_first = MM_rsCount
If (Recordset1_last > MM_rsCount) Then Recordset1_last = MM_rsCount
End If

' set the boolean used by hide region to check if we are on the last record
MM_atTotal = (MM_rsCount <> -1 And MM_offset + MM_size >= MM_rsCount)
%> <%
' *** Go To Record and Move To Record: create strings for maintaining URL and Form parameters

' create the list of parameters which should not be maintained
MM_removeList = "&index="
If (MM_paramName <> "") Then MM_removeList = MM_removeList & "&" & MM_paramName & "="
MM_keepURL="":MM_keepForm="":MM_keepBoth="":MM_keepNone=""

' add the URL parameters to the MM_keepURL string
For Each Item In Request.QueryString
NextItem = "&" & Item & "="
If (InStr(1,MM_removeList,NextItem,1) = 0) Then
MM_keepURL = MM_keepURL & NextItem & Server.URLencode(Request.QueryString(Item))
End If
Next

' add the Form variables to the MM_keepForm string
For Each Item In Request.Form
NextItem = "&" & Item & "="
If (InStr(1,MM_removeList,NextItem,1) = 0) Then
MM_keepForm = MM_keepForm & NextItem & Server.URLencode(Request.Form(Item))
End If
Next

' create the Form + URL string and remove the intial '&' from each of the strings
MM_keepBoth = MM_keepURL & MM_keepForm
if (MM_keepBoth <> "") Then MM_keepBoth = Right(MM_keepBoth, Len(MM_keepBoth) - 1)
if (MM_keepURL <> "") Then MM_keepURL = Right(MM_keepURL, Len(MM_keepURL) - 1)
if (MM_keepForm <> "") Then MM_keepForm = Right(MM_keepForm, Len(MM_keepForm) - 1)

' a utility function used for adding additional parameters to these strings
Function MM_joinChar(firstItem)
If (firstItem <> "") Then
MM_joinChar = "&"
Else
MM_joinChar = ""
End If
End Function
%> <%
' *** Move To Record: set the strings for the first, last, next, and previous links

MM_keepMove = MM_keepBoth
MM_moveParam = "index"

' if the page has a repeated region, remove 'offset' from the maintained parameters
If (MM_size > 0) Then
MM_moveParam = "offset"
If (MM_keepMove <> "") Then
params = Split(MM_keepMove, "&")
MM_keepMove = ""
For i = 0 To UBound(params)
nextItem = Left(params(i), InStr(params(i),"=") - 1)
If (StrComp(nextItem,MM_moveParam,1) <> 0) Then
MM_keepMove = MM_keepMove & "&" & params(i)
End If
Next
If (MM_keepMove <> "") Then
MM_keepMove = Right(MM_keepMove, Len(MM_keepMove) - 1)
End If
End If
End If

' set the strings for the move to links
If (MM_keepMove <> "") Then MM_keepMove = MM_keepMove & "&"
urlStr = Request.ServerVariables("URL") & "?" & MM_keepMove & MM_moveParam & "="
MM_moveFirst = urlStr & "0"
MM_moveLast = urlStr & "-1"
MM_moveNext = urlStr & Cstr(MM_offset + MM_size)
prev = MM_offset - MM_size
If (prev < 0) Then prev = 0
MM_movePrev = urlStr & Cstr(prev)
%>
<html>
<head>
<title>Untitled Document</title>

etc................

ASKER CERTIFIED SOLUTION

Michel Sakr

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amoran

ASKER

im not too familiar with the code for connecting to the DB
can you tell me in more detail what to do?
thanks!

Nitin Sontakke

Try changing following line from,

Recordset1.CursorType = 0

To,

Recordset1.CursorType = 1

amoran

ASKER

now when i do

Recordset1.movenext
nextdate = Recordset1("udate")
Recordset1.moveprevious

it just assigns nextdate to the same value as curudate (the current date before the movenext)

Nitin Sontakke

As i can make out from your posted code is that it is been generated by a software. Software generated codes are often very difficult to intercept with as you need to understand WHAT they are doing and more importantly WHY.

It is particularly difficult to introduce the custom code in generated one.

We need few lines around your posted code. Also, while dealing with recordsets, you have to ALWAYS keep of track of EoF and BoF, etc.

Also, tell us all variable declared by u and their intended contents.

Moondancer

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