Maximum Number Of Fields In Table
Dec 27, 2006
I have run into a problem with an ODBC table connection. The table I am connected to exceeds the number of fields allowed in an Access table. I am using Access 2003. When I looked on Microsoft help site I think the max number of fields in a recordset is 242 so I am unable to see all of the fields in the original table I am linking to. Does anyone know if this limitation has changed in the newest version of Access? I checked the Filemaker www site and that program does not have the same limitations. Thanks in advance for any help!
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Feb 8, 2008
Hello there.
Is it better to have many fields in one table or to split the data between a number of tables and link them?
Thanks.
# gingette
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Aug 17, 2007
I understand that the maximum file size for an Access db is 2GB but can you essentially have as many fields as you like as long as you do not exceed the 2GB threshold?
I am doing some planning for creating a database with ~90 fields and want to know before I start it whether it will be able to handle that many.
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Sep 18, 2006
Hi,
I'm trying to get the maximum number in a table field to increase it by one depending on the member that is selected in a drop down in a field.
I have three tables: members, programs and times. Each member can have N programs and each program can be broadcast N times.
Each member has a three digit code, like XXX. Each program has the three digit code of the member + three numbers that are supposed to auto increment. That is, the first program of member X with the member code XXX is called XXX001.
What I'm trying to do is that when a new program is filled in and I select the member, then the program code should update automatically, adding one to the latest program by that member.
That is, if the last program by member X that was inserted in the database is XXX010, then if a new program is inserted it should automatically be XXX011, even though programs by other members have been added in between.
This is the code I use now, for the AfterUpdate when selecting the member in a dropdown in the form. But although I've played around a bit, I just get error messages...
Private Sub medlemsruta_AfterUpdate()
Dim medlemskod
medlemskod = Me![medlemsruta].Column(2)
Dim strMax As String
strMax = DMax("programs_kod", "table_programs", "Left$(programs_kod, 3) = medlemskod")
Me!program_kod = Left$(strMax, 3) & Format$(Val(Right$(strMax, 3)) + 1, "000")
End Sub
Medlemsruta is a dropdown where one selects the member from the members table, where the three digit code is in the third column (Column(2)).
I'm trying to use DMax to get the maximum number for the particular member and after that adding 1 to that for the new program code.
Grateful for any advice! Thanks!
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May 4, 2005
Hi,
we use access for localisation in our application. The business object which accessess the access uses DAO connectivity and we often land to
"Too many client tasks" problem.
is it wise to change the DAO to ADO? if so the above problem will go off?
what are the chances that the problem still persists?
is that access has any limits on the number of connections? like 64, 255? or is that ADO/DAO has any limitaions on the number of concurrent connections to access DB?
Pls help, your help will be highly appreciated.
Thanks,
Venkat.
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May 3, 2006
hi all,
This is general question only. How many number of records that Access can handle as a maximum records?
Or it only depend on size limit (4GB)???
thanks
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Jun 3, 2005
My issue:
Does anyone know the maximum number of (one to one) relationships with cascading deletes a table can have?
Background:
I have a split database peer-to-peer application with ten simultaneous users, 250+ linked tables running on A2K, AXP and A03. MSDE and SQL Server are presently not viable options.
I'm unable to manually or programmatically relate one table to 73 others with referential cascade deletes; some of the 73 are related to still other tables. The one table is used as a recordsource on a subform on each of 73 different main forms, each of the latter having a different recordsource.
In other words, I want to delete a record in any of 73 different main forms, each with a unique table recordsource, and then cascade delete a subform record (which has the same table recordsource, regardless of the main form).
If I combined the 73 into a single table, I'd have a monster record with 500+ fields, assuming the latter is even possible, and in which event perfomance would suffer from excessive network traffic.
What I've tried:
I haven't worked this issue for some time and have forgotten the number of relationships for a single table I've been able to create. As I recall, it's on the order of 20 relationships maximum for one table.
Of course, I can do it programmatically delete the subform record on the OnDelete event of the main form, but, for elegance, I'd like to use a cascade delete.
Peer-to-peer network performance is not presently a problem.
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Nov 1, 2014
I have created a db for my warehouse, now what I want is to set a maximum no of items to be issued to one person = 20 (means 20 rows only) in a subform. If the number exceeds it prompt user that you reached to the maximum no of issues.
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Aug 21, 2007
hi there
how many columns is the maximum in a query?, because i have one that has 26 columns , but i need some more... what can i do?? is there a way to add some empty columns to a query??
thanks
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Apr 9, 2013
I have an Access database with a table that contains 11 fields. The first is a unique ID and the other 10 fields are various numbers. I need to know which of the 10 columns contains the highest number for each row and return the 2 rightmost characters of that column name. I started with the "maximum" function that I found on-line and it works to give me the maximum number in each row, but I need it modified to return the 2 rightmost characters of the column name that contains that number.
Code:
Function Maximum(ParamArray FieldArray() As Variant)
' Declare the two local variables.
Dim I As Integer
Dim currentVal As Variant
' Set the variable currentVal equal to the array of values.
[Code] ....
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Dec 19, 2012
Got to the stage where I'm creating and accessing folders via my db.
Is there a number out there for what is deemed a sensible maximum number of subfolders in a folder?
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Jul 13, 2015
I need to know about "Need to query result from access2007 find only "one maximum number" in hour per day every cell ID"
How I use sql command?
See my file at ...
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Oct 14, 2014
I am trying to create a training matrix in which i need a form that if I put or assign maximum of 20 attendees then 20 comboxes will appear in form.for example, i enter in textbox1 6 or 15 depends but max is 20 then if hit enter comboxes will appear but quantity will based on value that i enter in textbox1.
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Jul 12, 2007
I am a beginner and have a very basic query. I would like to create a field which returns the maximum value across a number of fields for each record. Is there a function that would do this?
To explain in more detail, each record is a customer and the fields are their purchases by month. I would like to get the maximum monthly purchase amount for each customer over the past year.
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Sep 29, 2005
Can someone tell me what the maximum amount of fields that you can have in a query is please?
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Jan 30, 2008
I know that tables have a max of 255 fields. How many can you add to a query?
I have a large database that is divided into several tables. When building the query to select all the data I will be way over 255.
Will this be an issue?
Thx!
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Sep 1, 2006
My boss has a table with tons of fields on it, he designed it this way because it was easier to add data to one place, but now the table keeps crashing, does ms 2k have a limit to the number of fields in a table??
Thanks in advance.
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Feb 11, 2008
I would like to know if there is a maximum nb of columns to use in a table or at least a prefered max nb. For example i have a table "customers" and inside i have "name" "last name" "age" "gender"..and so on is there a limit?
By the way i'm using access 2007
Thx for the explanation in advance.
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Jul 14, 2005
I'm just to work with Fox Pro, and I am therefore puzzled with how to define the exact number of digits in a field in a table in Access. If I need 9 digits + 2 decimals in a number filed, how do I define that in design view?
Also, I need to know how to export a table into a text file, with a format without any spaces, and each record is divided with a new line. This an old IBM text format file.
Thanks, Torsan
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Jun 4, 2013
I am having a table for invoicing and vouchers, and I need to have two fields that will have auto incremental numbers. How I can have two fields in the same table with autonumbers and how can I get one of them to start from a different value.
Eg. Record 1 - [inv No] 1 [Vno] 0005
Record 2 - [Inv No] 2 [Vno] 0006
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Feb 28, 2014
I have a table that has fields for number input
On my form I have in a TAB form 3 fields to input a figure, in the table these are set up as a Text NOT a Number. If i set it as a Number it keeps rounding up? even after i enforce 2 decimal places it still keeps rounding up.
Field 1 - 42988.62
Field 2 - 0.00
Field 3 - -14330.84
I then created a unbound txtbox so I can add these up
=[ResBF]+[ResRefReC]+[ResSurDef]
what i get in return is this :- 42988.620.00-14330.84
I also tried =Sum([ResBF]+[ResRefReC]+[ResSurDef])
and that just comes up with #Error
I even tried in the table directly to have a calculated field and still having the same problems.
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Jan 21, 2005
Can anyone please tell me the maximum number of records a table can accomodate? Also what happens if the number of records exceeds this maximim value? Awaiting reply
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May 18, 2006
I have an ... interesting issue. I am wondering if others have dealt with this. I have a solution, but am not the happiest with it.
I basically have 2 databases here. (Or I will when I'm done making them) and one is dependent upon the other. In fact, the 2nd's tables are dependent upon the fields in the first database's table.
This database is for quality control checking purposes.
First off,
Database 1:
Basically a list of standardized audits and what needs to be checked for those audits. What needs to be checked can change as things progress, but stays pretty standard.
Database 2:
This will hold the checks that the QC branch will do, based on what type of Quality Check they are doing, they have an audit standard. This audit standard exists in database 1.
What basically ends up happening is that the data in Database1 become Table fields in database2.
Example:
Database1:
Radio Check Audit Standard.
Needs to check following:
Process Specs
EDMS Drawings
Manuals
SoP / Policy
Used Radio callback
Used radio during emergency
Etc.
Another Random Check Audit Standard
Needs to check the following
Process Specs
EDMS Drawings
Manuals
SoP / Policy
Did something specific for this Audit
Didn't do something else, also specific for this Audit.
Etc.
Continue on with other Audits.
Database2: Will keep track of all the quality checks that have been preformed.
Today we will check Radio Protocol
Did they:
Process Specs
EDMS Drawings
Manuals
SoP / Policy
Used Radio callback
Used radio during emergency
Etc.
Yes, No as necessary.
2 Days later, we need to do another QC on the Radio Protocol
Need to check if they did:
Process Specs
EDMS Drawings
Manuals
SoP / Policy
Used Radio callback
Used radio during emergency
Etc.
Etc.
But what will be checked for in Database2 depends on what the standard is for the "Radio Check Protocol," or etc.
Right now, i see 2 options:
Option1
Make the 2 databases, and when a user "Picks" the Radio Check protocol, a linked table is filled with the Name / object that needs to be checked with a field in the same row to hold the data if the object was done / not done etc.
The fields in Database1 are automatically put into this specific instance of Quality Check, etc.
Only problem with this: Requires coding to auto update. Easy to do, but if errors occur, things will screw up.
Option2:
When the user picks the Radio Check protocol, simply allow a subform with a refreshed drop down box. Allow user to pick items they need (Limit it to only this Audit list, etc) to set to true. Assume false for other items not specifically chosen by user.
Problem with this: If an Audit standard changes to remove an item, or add item. Any quality checks done will also change for the assumed false items. If another Item added in, then all old QCs will now also have that item added in / reported assumed false. And if it is deleted, all old QCs will loose the item that was reported false.
I'm seen the first option as the only viable one.
Am I missing this, is there some other way to do this that would be better / wiser? Etc?
Kelemit
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Jan 9, 2008
Hi all, I've searched this with no success.
I have a ODBC (Firebird) table linked using a DSN connection which has >300 fields. In Access, the linked table only show 256 fields (max for Access). Otherwise the link works fine. I have no control over the source Firebird table.
What I'd like to do is limit which fields from the Firebird table are shown in Access. I don't need all the fields, but I need some that are at the end and are not linked in the current setup.
I'm very much a novice at using ODBC, but can I somehow use SQL or some other method to specify which fields to show in the linked table?
Thanks for any suggestions,
John
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Jul 30, 2015
Have a look at this screenshot from excel.
Basically I would like to capture the quantity in stock for the above list of phones at many stores.
I started out by adding each phone model as a numeric field in tblStock, because I need to obtain the quantity value for each and every model, for each and every store.
Is there a better way to do this? I was thinking of creating just 2 fields, Model and Quantity, then adding each model as a record, then using that record as a sort of template. I wander what would be the drawbacks of this, since with the first method, if a user needs to add a phone not on the list he would have to modify the table design.
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Jul 1, 2014
The "PersonalDetails" table is related to the "Application" table using the autonumber from table, "PersonalDetails".
The "PersonalDetails" table has "StudentID" (autonumber), "First Name" and "Last Name" fields.
The "Application" table also has "StudentID", "First Name" and "Last Name" fields.
The "Application" table is related to the "PersonalDetails" table using the "StudentID" field.
How do I make it so that the first and last names on the "Application" table are automatically updated when the StudentID is entered?
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