Random Autonumber Force Positive Only

Apr 1, 2007

I don't know if it's possible, but is there any way of forcing the random autonumber generator in tables to be a positive number only?

The autonumber as I've searched on the forum can be a positive or negative number and I'd like to use the random autonumber feature as a primary key for account numbers for my database, but not using the negative numbers as they will look like odd account numbers with the leading negative.

I could possibly remove the leading negative, but there's then the chance that you'll have duplicates.

Thank you!

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Random Autonumber

Jul 27, 2007

With Access 2003 I have a tbl_Orders with the field OrderID set as Autonumber>Long Integer>Random. This produces long strings of numbers both positive and minus. Is it possible to set a certain format such as #### and no less than 0 but no more than 9,999?

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May 30, 2014

I need to restrict the random autonumber feature to 10 digits and a positive number for a primary key. I work in the medical field, and HIPAA privacy regulations require the use of random ID numbers to identify records. Also, I need the numbers to be positive numbers because we will be using barcode scanning equipment and the possibility of truncating the negative identifier creates the possibility (admittedly remote) of having a duplicate PK barcodes. I understand that we cannot change the Access feature, but any VBA code to generate a truly random 10 digit positive number I can use as a PK?

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Nov 21, 2013

I have two tables linked to each other in one to many relationship. Instead of auto number, the date and shift (Text) is being used as the primary keys (Composite Primary Key). Here is the tables structures,

Payouts Table:
Date: Primary Key
Shift (Day or Night) : Primary Key

Bills Table:
Date: Primary Key
Shift (Day or Night): Primary Key
Autonumber: Primary Key

The tables Payouts and Bills has one to many relationship. One payout row can have many bills. The problem is that I want to start the Autonumber in bills table everyday from 1. As date and shift are different for every day so even if i start bills from 1 everyday, it wont make same primary key. I can do it manually but I want to make it automatically.

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Jul 2, 2005

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Jan 30, 2007

Hi.. I am a beginner using access and there is probably an easy solution for this which i dont know about!

I have made a query where i calculate the tax deductions for a payroll system. my problem is that different workers are to be taxed differently given maritial status and number of kids as well as net income.

I have managed to calculate everything with the kids and wifes but now i need to sort the table after how much they earn to deduct taxes. I have a "first stage NetPay field" now, where i can see the Gross pay minus allowances for wifes and kids.

Now, if that value(first stage netpay) is under 8840 no more deductions are to occur. If the value is between 8840 and 10000 i have to deduct 15% of the excess above 8840

If the value is between 10000 and 20000 i have to deduct a further 174+ 25% of excess over 10000

If the value is above 20000 i have to deduct 2674+ 31% of excess over 20000


So far what i have done is make a new coloumn, where i take "first stage netpay field" and subtract 8840. If the value is negative i thought i could show only the positive values by enterin >0 in the criteria field for the query, this however will make no posts show up..

(I tried entering Abs() in the Field coloumn where i made the expression, and this worked. )


So my question is: is there a function like Abs() i could use that would convert negative values into 0?

Or do any of you guys have a better idea of how to solve this?




Hope someone can help me...


Takstein

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Jan 10, 2005

I have a calculated field which sums the quantity field for all transactions by the part#, lot# and location. (A part number could be in several different locations and lots and are treated sperately - if they are in the same location with the same lot number they are summed).

To add quantity the user enters the data using a form. To issue (subtract) the user uses a minus number (eg -20). The calculated field sums all these and outputs the current total.

How can I make sure this is always positive.

Ie. When the user does an issue the qty they specify will be less than or equal to the current total according to the sum calculation.

Thank you for any help

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I have a field on my report that contains positive and negative numbers. I'm trying to find a way to Sum the column twice for two different fields (one for positive sum and the other negative) To make this easy let me give a small example with explanation of the issue I am having. 14 rows of data containing positive and negative numbers in a field called [Rooms]:

1) -1
2) 1
3) 1
4) 1
5) 1
6) 1
7) 1
8) 1
9) 1
10) 5
11) 1
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13) 1
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The positive numbers represent confirmations, the negative numbers represent cancellations. I need 2 fields to separate these. The first field's control source is Sum([Rooms]). No problem there. Access does the math and comes up with "8" confirmations which is correct. Then in the second (Cancellation field) I try something like Sum([Rooms]<0) to get the negative numbers which should add up to -7 (-1+-1+-5), but instead I get -3 because it's not summing the values, it's really returning the number of rows that has a negative number. Is there any way this can be done at the ControlSource Property of a report field? Or if I could do a "Where" clause in a ControlSource I could acheive it another way, but I don't that is possible. Is this just something I'm missing with the way I'm stucturing the ControlSource or is it not possible. Or alternatively, is there a way to separate it in the query and have a separate query field for positive and negative going into the report. I can do one or the other in the query but I can't seem to do both without showing values of each type in both query fields.

Thanks for your help!

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Aug 14, 2014

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This will return a negative quanity iE -200

what I then would do is copy that to a purchase order but remove the negative sign can this can the formula be changed in anyway to give the positive number .

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Nov 5, 2014

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I have a couple of textboxes which take their values from a function. The function is designed to return a long integer value which should always be greater than or equal to zero (the function counts the number of outstanding e-mails in a given Outlook folder, hence it should always be zero or higher)

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so in my table I have

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I would like to go one step further and indicate this negative value in red is possible in my FORM.

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I am looking for a way to force a one-to-many relationship between two tables. I am connecting the primary key in table1 to a field (foreign key) in table 2. But it keeps going to one-to-one.
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Jun 13, 2007

I have a query in Access 2000 that I can't get to force a certain value in empty rows for a particular field column - maybe someone here can see why?

The SQL for the query is as follows (give or take some)...:

TRANSFORM Count([Testing DB].[DB_ID]) AS [CountOfDB_ID]
SELECT [Testing DB].State, [Location].[North], Count([Testing DB].[DB_ID]) AS [Total Of DB_ID]
FROM [Testing DB] LEFT JOIN [Location] ON [Testing DB].[Address] = [Location].Address
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ORDER BY [Testing DB].State, [Location].[Size]
PIVOT Format([Date],"mmm-yyyy");

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Am I perhaps going about this incorrectly? Maybe I should have used some form of iif(is null) instead.:confused: Any help is, as always, much appreciated.

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Being an amateur at Access, I've only recently realized that you can force column headings for crosstab queries, by typing those headings into the properties of the field selected as the column. But can you do the same for ROWS?

My data concerns patients of a specific type and the times of day they show up at our A&E (ER). I've grouped these by hour and now I want to crosstab them by day of week. But if there aren't any between say 3am and 5am, those hours don't show in the query, which is screwing up a pre-formatted report I have.

I've found some assistance on other threads.....
http://www.access-programmers.co.uk/forums/showthread.php?t=92471
http://www.access-programmers.co.uk/forums/showthread.php?t=83820
.....but to be honest I didn't really follow it.

Is there an easy solution? If not, it's not a huge problem and I can "fudge" it once a month, offensive as that must sound to you professional types!

Thanks as always.

Pat

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:confused:

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