Finding Missing Numbers In A Sequence

Feb 1, 2005

Hello, I have no idea what to search for to see if someone else has already asked this question. I've tried several things with no luck. So here goes...

I work in a library. We deal with thousands of journal subscriptions--we cancel our subscriptions and order new journals all of the time. Every paper journal we have is assigned a unique number, called a ZP number. When we throw out a journal, that ZP number can be assigned to a new journal.

I would like to find the earliest missing number in the sequence without having to check manually. Is there a way I can do a query or something to find missing numbers in the sequence? The ZP numbers start with 1 and go up to 9999.

So, I have two fields: Title and ZP#.

How can I do this?

This is a cloned table, used solely for assigning ZP#'s, so it can be altered in any way--including adding records with blank titles for each missing number.

Thanks,
Siena

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Finding Numbers Missing In Sequence

May 8, 2007

Hi

I've searched the forum and only found one thread which covers this but doesn't help me.

I have a table with peoples individual information in it.

Every person has a unique ID number.

I want to find the missing ID numbers when I delete a person so I can keep the numbers in sequence.

I am not using autonumber. The reason for this is coloured wristbands. Each wristband has a unique number and they are broken into 4 colours. each colour has a number range 1 - 300, 301 - 600, 601 - 900, 901 - 1200. Each person in the table has to have an ID number matching a wristband. The people are also broken into 4 colour categories. This means that not every range is filled before i need to start using the next range.

Hope that makes sense.

Snab

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For instance:

TYPE ID TEXT
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First I want to thank everyone who sent me a response to my original problem. Unfortunately I still have not been able to get the results that I need. So for those new individuals who may have missed my original thread I will try again:

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Jul 16, 2014

I need to create a very simple database that would just store records and produce a couple of reports. I have three tables: one with the roster , one has records of the inventory items people from the roster receive and another one contains types of inventory we have. Everything is very simple except for one part. Every time we make a record of an inventory item given to someone, it requires not only employee id and inventory type from the existing tables. It needs us to enter a serial number of an item. This serial number contains a letter and a number.

Looks something like this - M100. Many people receive a consecutive set of inventory items. For example, from M100 to M150. There is no way to have a separate table with all serial numbers because they constantly change. That is why we need to have two text boxes that would allow us to input a range of serial numbers or just one number. Then the program should separate numbers from letters, evaluate the range, create new records of numbers and then put new numbers and a letter back together into one field in the table where we have all inventory records.

I found the following code online that allows me to find numbers within a range, but it only works for numbers.

Dim varRange As Variant
Dim lngLow As Long
Dim lngHigh As Long
Dim lngCounter As Long
DoCmd.Hourglass True

[code]...

I then found a piece of code that is supposed to separate numbers from letters, but I can't find a way to make it work.

Public Function FindNum(strName As String) As String
Dim strTemp As String
Dim i As Integer
For i = 1 To Len(strName)
strTemp = Mid(strName, i, 1)
If (Asc(strTemp) < 91 And Asc(strTemp) > 64) Or (Asc(strTemp) < 128 And Asc(strTemp) > 96) Then
FindNum = Right$(strName, Len(strName) - i)
End If
Next i
End Function

how to alter the code to make it work for my specific situation.

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Jan 1, 2006

I think this would be done though a query but i am not sure, any help or examples would be useful on this on.

Question:

Is there a way of getting access to find missing numbers. for example if some one enters 0 - 5 then access will pull the following numbers 1,2,3 & 4.

I am not sure if this is possible so any help would be good.

Alastair

P.S. HAPPY NEW YEAR TO ALL.

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Jan 2, 2008

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Record 1 |draw#|Date|#1|#2|#3|#4|#5|
Record 2 |draw#|Date|#1|#2|#3|#4|#5|
Record 3 |draw#|Date|#1|#2|#3|#4|#5|
Record 4 |draw#|Date|#1|#2|#3|#4|#5|
Record 5 |draw#|Date|#1|#2|#3|#4|#5|
Record 6 |draw#|Date|#1|#2|#3|#4|#5|
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Feb 25, 2014

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Dec 12, 2012

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2
3
4
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6
7

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5
6
7

How can I make it fill up the missing "4"?

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May 5, 2013

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The reason for this query is to tell the user of this database that a specific case number has yet to be entered and needs to be. The case numbers are unique and will never be referenced more than once.

My table name is "MainDataTbl" and the field i'm trying to find the missing case numbers is titled "CaseNumber".

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Oct 7, 2005

Hi all

This is an ongoing problem I have had for 4 weeks now.

I have made a a system thats acts like a clock In/clock out Out system.

the structure is somthing like this
ID
Username
tblDailyLog
TimeIn
MorningBreakOut
MorningBreakOut
LunchOut
LunchIn
AfternoonOut
AfternoonIn
TimeOut

All fields apart from ID (autonumber) and username (String*255) are Date field (there are a few others like DateOfTimesheet etc but they arnt important here)

When a user arrives in the morning they make a record which they use for the day

They then have a form with a whole bunch of buttons which simply updates the correct field. For example they click the "Sign in for the Day" button and it updates the correct field with the current time.

Everything was going fine until people noticed that every now and again a sign in time dissapeared.

I have hacked myself to death trying to solve this problem but still the updates go Astray.


Now each time a time is updated the process goes somthing like this


1. the user opens their timesheet for the day (the RS is SNAPSHOT and no locks)

2. User Hits a sign in/out button
3. The record source is changed to "" and all buttons hidden (to ensure the record isnt locked and to make sure you dont do two things at once)
3. The table is updated with the new time (using some dynamic SQL)
4. The table is repeatadly checked using a DO loop to make sure the the correct time went in.
5. when the returned time value of the field matches the varaible used to update it, the form is returned to normal and the user carries on his/her merry way (if it never matches the screen should crash but this never happens).
6. A New record is added to another table called "tblbugfixinglog" which records which field was updated and when. This is so that I have two records in two different ways (figured if one went astray I could pull it back off the other)
7. Another new record is added to yet another table called tblSQLRecord, which simply logs all .RUNSQL statements that are executed.


I thought that the two extra tables (and the check that the record had been updated) would help me track down where the records are going missing, but this isnt the case.

Now it appears that some records arnt being added to tblBugFixingLog and to tblSQLRecord either and some of these tables are getting quite a few #ERROR's in them..

None of the tables are related to any other and i've no idea how #ERROR lines are appearing in a table that has 1 function... to recieve new records ... no editing, no viewing, no deleting.

Does anyone have any idea how these updates/inserts can go missing or create #ERRORs.
I've built plenty of Databases in my time and have never come across this.
__________________________________________________ ______________

This is the function I use to add a record to tblBugfixingLog and tblSQLRecord


Private Sub AddBugLog(ByVal TimesheetNumber As Long, ByVal FieldUpdating As String, ByVal NewFieldValue)
Dim TempSQL As String
TempSQL = "INSERT INTO tblBugFixingLog (TimeAndDateOfEntrySERVER,TimeAndDateOfEntryPC,Fie ldUpdated,NewEntry,UserID,TimesheetNumber,Computer AssetNo) VALUES (" & _
"#" & Format(ServerGetTime(Environ$("LOGONSERVER"))) & "#," & _
"#" & Now & "#," & _
"'" & FieldUpdating & "'," & _
"'" & NewFieldValue & "'," & _
"'" & GetNTUser & "'," & _
"'" & TimesheetNumber & "'," & _
"'" & fOSMachineName & "')"
' MsgBox TempSQL
DoCmd.RunSQL "INSERT INTO tblSQLRecord (Username,DateAndTime,Screen,TheSQL) VALUES('" & LoginInfo.sUsername & "','" & CStr(Now) & "','Add Bug Log function','" & CleanData(TempSQL) & "')", False
'CleanData is a function that removes ' and " from the SQL string so i can easily add the SQL string into the table
DoCmd.RunSQL TempSQL, False
End Sub

Public Function CleanData(ByVal DataToClean As String)
Dim TempData As String
Dim i As Integer
TempData = ""
For i = 1 To Len(DataToClean)
Select Case Mid(DataToClean, i, 1)
Case "'"
TempData = TempData & "`"
Case """"
TempData = TempData & "`"
Case Else
TempData = TempData & Mid(DataToClean, i, 1)
End Select
Next i
CleanData = TempData
End Function


__________________________________________________ ____


I have no idea how this can create #ERROR lines in the table when it is just added to and nothing else.

Does anyone have any clue to what may be happening here.

(Oh yeah and no matter how hard I try, I can't replicate the problem.... works for me every time no matter how harse I am to it!)

Please save what little hair I have left and give me some hope

Cheers
Homer

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