Variant Data Type Acc97 And 2000
Feb 6, 2006
This is a follow up to a problem I had with a Subreport which I have now solved but would like additional information on the differences between 97 and 2000.
basically I ghad a subreport that worked in97 but gave Invalid Argument in 2000.
It appears that the linking field was too long and this caused the Invalid Argument.
The fileds were a concatonation of two fields. One Number and One Text Field. Yes they were a bit long in certain circumstances but for fairly good reasons. I believe these would be generated as Type Variant.
Does anybody know the differences in teh Variant Type between 97 and 2000. I have tried searching teh Help in 2000 but unable to find any info or indeed the correct phrase to search on.
len
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Jul 1, 2007
Hi,
I am getting this error 'You tried to assign the Null value to a variable that is not a Variant data type. (Error 3162)' I know why I am getting the error, I found out that Form and Subform should be implemented only with one-to-many relationships where the Subform is the many end. However, I have the opposite of that for a reason.
Is this bad practice? Is there anyway around it or to fix the error please?
Any help will be very much appreciated,
B
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Jan 19, 2014
I have an Access 2010 database where we have a SQL Linked Table with a column that is nVARCHAR(20) Not Null data type. We have created a form for data entry. Currently when the user tries to erase a value or choose not to define a value we get the following error.
"You tried to assign the Null value to a variable that is not a Variant data type."
This field should accept a blank value "" as the user may not want to set the value. We do not have control over the DB schema, so how can I work around this issue in access?
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Mar 27, 2006
If I have a report in MS Access 2000 generated based on the criteria selected of a project with work order "9999" with the labor costs, materials costs and the Totals of each crew1, crew2,... and I would like to have those expenditures populated in corresponding cel in Excel for each crew, HOW would I do it?
To think it out loud, could I create a button on a form, so when I select the criteria for the work order, and when I click the button, it should refresh/update the Exel file with the new data...?? How do I write VBA code for that...?
Please help...Thank you so much....
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Nov 3, 2012
I have a table with a field with names set to text data type and i want to change it to number data type but when i do it in design view the data get lost. I want to know if there is a way to convert the data in the field as number type and keep the data in the field.
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Jul 13, 2006
Hi there,
I have converted an acc97 file to acc2003 (using acc2000 as an intermediate step).
The exit button on one of the forms sets a global variable value to a string, but this action LOCKS all subsequent forms for update.
The exact same code appears in the Acc97 version but does not create a locking problem.
Any ideas would be much appreciated.
Thanks you.
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Mar 23, 2008
I have an old access 97 database that I can open with a user password, but cannot open as an administrator. I need to look at some development issues. My problem is that the vendor who wrote the database no longer exists to help me. Does anyone know how to strip off password so that I can examine this old database?
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Jun 14, 2005
Hi guys, this worked under access 2000, but not anymore under 2003
"strtrans" is not getting the value.
I can't find what's wrong, tried string, defininf them in a module. Nothing.
Anybody any idea why that is?
Here's the code:
Dim strTable As Variant
Dim strField As Variant
Dim strtrans As Variant
Dim stDocName1 As Variant
Dim stDocName As Variant
stDocName1 = "qerDelActieTabel"
stDocName = "qerUpdateActietabel"
On Error GoTo Err_Knop20_Click
Me.Probleem.SetFocus
If Me.Probleem.Text = "" Then
DoCmd.Close
Else
Me.Appcode.SetFocus
If Me.Appcode.Text = "" Then
strTable = "tblActie"
strField = "Probleem"
strtrans = Me.Ingavedatum.Value
strtrans = strtrans & "ac" & DCount(strField, strTable)
Me.Appcode.Text = strtrans
MsgBox sttrans & strField & strTable & stDocName & stDocName1
DoCmd.DoMenuItem acFormBar, acRecordsMenu, acSaveRecord, , acMenuVer70
DoCmd.OpenQuery stDocName, acNormal, acEdit
DoCmd.Close
Else
MsgBox sttrans & strField & strTable & stDocName & stDocName1
DoCmd.DoMenuItem acFormBar, acRecordsMenu, acSaveRecord, , acMenuVer70
DoCmd.OpenQuery stDocName1, acNormal, acEdit
DoCmd.OpenQuery stDocName, acNormal, acEdit
DoCmd.Close
End If
End If
Exit_Knop20_Click:
Exit Sub
Err_Knop20_Click:
MsgBox Err.Description
Resume Exit_Knop20_Click
(eddited for clarity)
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Aug 20, 2013
Creating a recordset from an Access table
Copy that recordset into a Variant variable, similar to a matrix
Run a Heuristic Algorithm on the matrix to populate values
Delete * from the orginal Access table
Input new data into the Original Access table by looping through matrix with an INSERT INTO statement.
This method works but I do not like the loop in step 5 as I am calling an INSERT INTO statement 800+ times and can be slow. Any way to view the variant as a whole and not have to loop through the entire matrix. Maybe possibly converting the variant to an Access tabledef.
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Feb 25, 2008
I need to be able to precisely handle nonnegative integers (in the math sense of integer, not the VBA sense, of course) between the values of 0 and 808,035,046,350,570,000. (Don't ask.)
I'm wondering whether I should be handling these numbers in a string and do everything manually, or whether the datatype Decimal or Variant will work for me.
I read that Decimal handles +-79,228,162,514,264,337,593,543,950,335 with no decimal point, or +-7.9228162514264337593543950335 with 28 places to the right of the decimal.
I absolutely cannot have the "rounding type errors" and "oddities" that you get by storing integer values in doubles, for example, due to imprecission.
Seeing that Decimal seems to work in a decimal point manner worries me, that perhaps I shouldn't be using it for this scenario. However, it's range seems so much larger than what I need, I'm wondering if I would "get away" with it.
If needing no imprecission to creep in means that I have to use Strings and implement my own String math library, that's the route I would have to go.
Question 1 - If I need the numbers to be exact (again, nonnegative integers, no decimal points), do I need to use a String, or should I use a Decimal or Variant type?
Question 2 - What is the difference between Double and Variant, for the purposes of storing numeric values? I read that Doubles are 8 bytes, and Variants are 16 bytes, however the Variant description is "Any numeric value up to the range of Double", which confuses me since it's double the size.
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Apr 15, 2013
what I want to do is make a button to search range of columns in data table with data type Yes/no and display the results if the value is yes
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Oct 23, 2013
I have a field in a table that is comprised of mostly numerical data but some records are text.
I want to convert this field to numerical only and make a new field to put the textual data in.
However converting the field will delete the textual data. What is the easiest way to convert the field but save the textual data AND append the textual data to the SAME record that they were in originally in the new field?
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Oct 24, 2005
Hi
I have a database that currently has security in place so that users input their own usernames and passwords to access the database. The users have recently been added to a windows 2000 server and I want to be able to use their windows 2000 server logon credentials to provide them with automatic access to the database. Is there anyone out there who knows how to set this up? It is a rather urgent request if you could get back to me either on this forum or via email
chris@ctbjs.co.uk
many thanks
Chris
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Jun 2, 2006
I am opening and closing a series of Excel 2000 Workbooks using Access 2000 VBA and want this sequence to be able to complete without any human intervention.
However, there are 2 instances when this stops and waits for a human option to be selected:
1. When the spreadsheet is password protected
2. When the spreadsheet has automatic links I get the message:
"The Workbook you opened contains automatic links to information in another workbook. Do you want to update this workbook with changes made to the other workbook?"
How can I code it so that in situation 1 it skips this file and in situation 2 it automatically defaults to do not update?
Any help most appreciated.
Dalien51
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Aug 20, 2007
Hi everybody,
I have recently been doing a conversion for my boss for a access 2000 database (both front and backend) to a MSSQL backend.
I finished the conversion today (as quite a lot of the code / queries ran slow due to access running the queries locally rather than on the server). And tested it on my and my boss's machine with no problems so he gave the go ahead to update everybody to our new mssql 2000 backend with the modified frontend.
This is when the problems started; We had two different sets of forms for accessing one of our databases systems - the log system, one is the original dynaset based form, and the other is a newer set which uses snapshot views and preforms updates via queries. Nobody uses the old dyanset system apart from my boss and one of the administrative team as they have things on that window which they need to see. About 30 minutes into the release of the new database the system frooze up on my bosses computer and nobody could create a new log (the server was timing out). I assumed this had something to do with the old dynaset's creating locks on the table.
I offlined the database and kicked everybody out of the front end, turned it on again and tied again, this time banning everybody from the dynaset system. Within 10 minutes another computer frooze up, again with a timeout on the insert query. I discovered that after you had added a new log to the database it would timeout on all subquent additions (something it hadn't done during testing) . Further investigatiion showed it was the snapshot list window causing the error, so coded the add log window to close the list before preforming the insert query and then reopen it afterwards. This allowed my machine to make multible additions without flaw. So I released a new client to everybody. 15 minutes later it was timing out again, but this time there you could not even make one new record.
I checked for locks on the table though the server management table and couldn't find any for the Log table. I have restarted the SQL server box and with no avil. So I reverted our backend to the access mdb file and told people to use the old client.
I am at a complete lose to why this is happening, if anybody has had any expericences like this or knows the cause please tell me.
Some information on the database in question.
It was made as an access 2 database all intergrated into one file, then it was seperated into two files (frontend and backend). Upgraded to Access 97, then to 2000 before this final update to MSSQL 2000.
The log system has two main tables. The first is the log title / info table which links (one to many) to a log entry table. This problem only occurs on the main log table and does not appear to be reoccurring anywhere else within the database. The main log table has just under 18,000 rows in it.
Thank you in advance for any help,
Dom
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Oct 2, 2006
I’m not an expert in Access and hope that someone can help me with my problem. I have about 20 fields of Yes/No data type.
E.g.
StudentID- Tex
Science – Yes/No
Math – Yes/No
Biology – Yes/No
Chemistry – Yes/No
Economics – Yes/No
...
I would like to create a parameter query (without using form combo box) where when I run the query, it would prompt me for the subject name. Let say I keyed in Science, it would list out all the StudentsID who took up Science only (with a Yes) and the other subjects.
Pls help.
Thanks.
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Feb 16, 2014
I want to input data number such as 0.5 in my table, but it doesn't work. I already fill field size : integer with format : Standard with Decimal : 2, but the result is always 0.00 not 0.50 as my expectation. How to define that in my table?
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Jan 3, 2007
Hi,
How do I format data in my report to display with a dollar sign?
I am using the following format $#,##0.00;($#,##0.00), but somehow I get a Format$ paramater to enter value.
Thanks
df
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Jun 21, 2005
Hello All,
I am using Microsoft Access 2000 and wanted to know how to import data from another Access database that was done in Visual Basic. I know how to import flat-file database such as Excel but how do I import data that has a
One-To-Many Relationship? The end user will need to transistion into the new database so I would need to update it once awhile. Thank you very much for your time and assistance.
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Jul 26, 2015
I've just joined a company based in Scotland, they are running a multiple user access 2000 database: backend and front-end. Recently they have had an issue where a user inserting a new row in a table, as they do, the record above drops off the table (disappears/unrecoverable). My first impression has been that this is a DB corruption issue and as such have ran compact/repair.We are running this database on network server:
-Backend resides in central location
-Frontend - Each user has their own front-end, storded on their personal network drive.
Would I be right in saying that the best solution would be to convert to newer version of access ?
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Aug 13, 2013
i am programmer i do a project on vb.6.0 and ms access 2000
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PROBLEM 2). if i add large number of data on database but its not increasing and constantly on 18 numbers.
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Nov 15, 2006
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Jun 3, 2005
I am working in MS Access 2000. I have a query that is returning a table with various types of data. The problem is I can't seem to find anywhere in the Access GUI that will show me the data types of columns it has returned so I can't manually create a table to hold the values returned by query. Question is two fold:
1. Is there a way in Access SQL to import data returned from a query into a table that is not yet defined. Some like this:
a. Create a table that has a primary key but doesn't yet know the number of columns and/or data types of those columns.
b. Import the data from a query into this table and have it create the columns and copy the data types and populate the table while also numbering each row by primary key.
or
2. Is there a way to find out what the data types are for a table returned by a query in MS Access. I have checked the properites of the query and have been up and down the gui looking but I can't find a way while looking at the data returned by a query to explicitely see the data type (i.e., number, Date/Time, etc..) used by each column.
Any info would help. Thanks.
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Mar 19, 2007
When exporting a table to excel is there anyway to presever the data structure - ie a text field of length 30 will only take text length 30, Interger would only take integer and date would only take date etc, etc ,etc.
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Thanks in advance.
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Mar 5, 2007
Hi,
Trying to get back into Access after a long time, just need some refreshing :) tips.
I have 2 tables, one of the tables stores titles (mr, mrs, etc). I tried using the 'lookup' data type to link the data from the other table. This however stores the field as a number and causes problems on my form as only a number is shown rather that the text.
What do I need to do to resolve this? :confused:
Thank you.
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