Tables :: ODBC Imported Tables / How To Ensure Index Is Created
May 13, 2015
I am currently using Microsoft Access 2010 32bit, and have one database acting as parent, with a second linked database as a client for people to work with, and the parent database has tables imported from Sage V21 via ODBC. I have used the following code as specified in other examples as follows:
Code:
DoCmd.TransferDatabase acImport, "ODBC Database", "ODBC;DSN=MyDNSMachineName;UID=MyUID;PWD=MyPassword;LANGUAGE=us_english;" & "DATABASE=pubs", acTable, "INVOICE", "INVOICE"
one of the tables has 10k records in it, it only transfers 77 records. After manually attempting an import via the ODBC wizard it finally lets me access all 10k records.I wish to have a single button click delete and import fresh tables without worrying if all the data is coming across.Also, when manually adding a table, I am usually asked by the wizard to specify an index, but with the code above, I am not offered that option and the tables come across with no index. I am led to believe that having tables that link to each other without an index is bad, so how do I ensure an index is created?
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Feb 19, 2013
I have created multiple tables in my database and now for some reason it keeps telling me it can not find a few of my existing fields.
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Jul 22, 2015
I have linked tables from SQL Server using ODBC connection that their location never changes. I have used certain fields of those tables to create queries and make table queries to derive to the information I needed.
On these tables on SQL Server, there is new data added daily. Every day, midnight, there's new data records added of whatever transactions took place in that working day. how often do I need to refresh linked tables in this case to get the latest data added. I mean, once I am linked, the make table query using those defined fields, would it get the latest data added by default when the query is executed, or I must refresh linked tables using Linked Table Manager and then run make table query.
Also, if I want the access to automatically refresh linked tables, can I use the following code? I have added this code, and executing it through a button, but I don't see anything happen, the database becomes inactive for couple seconds (I guess while it is updating) but I don't know is it updating the tables for sure or not, though I am not receiving any error when executing the code through the button.
Function RefreshLinkedTables()
Dim tdf As TableDef
For Each tdf In CurrentDb.TableDefs
If Len(tdf.Connect) > 0 Then
tdf.RefreshLink
End If
Next td
End Function
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Apr 30, 2015
How to Update ODBC linked tables on ms access?
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Oct 5, 2007
Hello, this is my first post (anywhere ever)!:eek:
While I have lots of Access programming experience over the years I have broken new ground this week and am in unchartered territory and need help please!
In the organization I am working for (as Procurement Manger), we use AMMS (by Microwest) for work order generation and inventory management, etc. I have been able to import into Access the tables of interest from this SQL-based package. The problem is that I need to share the tables (via nice front end forms/queries) with about 20-30 people in the field.
I don't know much about ODBC but the administrator of AMMS was kind enough to give me access to the AMMS database tables via ODBC and I, personally have access to read the table data but none of the other people in the field can access these tables due to security rights.
So, what I have done is I created MS Access tables for each of the 4 AMMS tables of interest and I run code that runs delete and append queries on each table. I then have a separate public db that the field people access with all the queries and forms but only links to the Master db containing the 4 Access tables derived from the ODBC tables. This works ok but there are issues:
1) if any field people are on the Public db, the code to import the ODBC table data loops and does not complete the delete/append cycle on one or more of the tables. I can only refresh the table data when nobody is connected to the db - impractical.:(
2) the ODBC tables are rather large - one is over 38,000 records and it takes several minutes to run the delete/append queries.:mad:
3) When I created the Master db it was some 83MB. After running the delete/append queries it is some 179MB and appears to increase in size every time I run the delete/append code. When I run "compact db" it stops running after a short time. Does nothing but create a new file (db1.mdb) of the same huge size as the Master.:confused:
I suspect the most graceful solution would be to give each user rights to the ODBC tables from AMMS in Access. In this case, I wouldn't have to run delete/append queries and the data would always be in relative real time subject to the refresh timer. Unfortunately, due to AMMS licensing restrictions, this is not doable.
I have tried to search the internet for guidance but no luck. This forum appears to be an excellent opportunity to get expert advice on this particular issue. I thank you for your thoughts and guidance.
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Mar 19, 2013
I uploaded quite a bit of data from an extensive list of Word Documents. In some of the Memo fields, it imported these weird Squares. Some times at Tabs or Paragraph returns.Is there an Easy way to remove these things?
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Oct 2, 2007
Hi,
Does anyone know how I can get the imported table PATHS in VB code and current database path?
Thanx :confused:
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Jul 9, 2013
I am using Access 2002.I am going to be producing a macro that imports a txt file. Once the text file is imported there will be a empty field for a date value. Nothing in the file that is being imported will have a date in it.
I would like to (if possible) to, once the file is in the table, open an input box asking the user for a date (formated as YYYY-MM-DD) and once the date has been entered and the ok button pressed it inputs that date in to all records in the date field.
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Aug 15, 2013
I have a table with several columns (13).
Every week i want to import a csv-file (250 records) which may or may not have been updated, say 200 are the same as previous week and 50 records are new/updated.
Is there a way to import the csv and add an extra column with who imported all of the new records (based on currentuser)?
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Aug 30, 2013
I have tbl_orders which records orders. I have a linked table called tbl_order_lines which details the items against each order.
In a nutshell, an item can only appear once in an order. However, I do not know how to create a relationship or code the frm_order in order to reflect this in my DB.
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May 31, 2013
Why one would want a unique index on an ID key ? It can't be effectively used in joins and is never used in a where clause. So why have one ?
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Mar 17, 2015
I have a table, which contains many fields, around 90. Out of these 90 Fields, around 40 will be imported from an Excel sheet, which has same headers as the 40 field names in my table, in which they have to get copied.
So when I import data, it copies them as new records, instead what I am looking at is, the records in Excel and in Access table has a Unique Key, so when I import data, matching with this unique key, the fields should be overwritten into those records from Excel, instead of adding new records.
E.g:
Say I have 2 records in my access:
ID(auto generated) Fab_name Issue_ID Location Remarks Data_1 Data_2 Data_3
1 Fab1 193 NY Bug OC DC MC
2 Fab2 641 DRS Error AC KC FC
Now when I am importing data from Excel with the following records:
Fab_name Issue_ID Location Remarks
Fab1 193 NY - GRM Solved
Fab2 641 DRS - SGP Forwarded
So when I import the above data into my Access from Excel, based on Issue ID, it should update the values of different fields that are imported from Excel, leaving other fields (data_1, Data_2, Data_3) as it is.
And I need this to be written as a macro, so that user just has to choose the file, which he has to import.
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Nov 22, 2005
Don't know where this question will rank. Completely weird or completely common.
I've been getting great suggestions from this forum, one of them was to begin creating seperate tables for our data (I'm currently cleaning up a mess created 10 years ago for a nonprofit). The best way I have found to link/associate/whatever tables is to use their STUDENT identification number (since this value never changes). So we linked tests to that number (many tests to each student) by entering each new test as a seperate item with a manually entered stu id. We linked TUTOR and so forth the same way. But now I would like to start linking some more things. Particularly INSTRUCTION HOURS.
The question I have is this. How do I automatically create a value in the HOURS table that links to the value (stu id) in the STUDENT table. So that every student (previous and new) will have ONE associated HOURS set each time new student data is entered.
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Sep 24, 2014
I have a couple of tables which only have a single field. Is it worth adding a second field in order to hold an ID number (is this commonly termed an index number?) for each entry.
My other tables with multiple fields include a field for an ID number and these tables are linked via these fields.
At this stage I cannot see any reason why, in the future, I would want to add additional fields to the tables which I am currently planning to make single field.
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Jul 10, 2013
I've been having problems merging a spreadsheet with data into an already created table..
The main things in common is the "MC", "First Name", "Last Name".
I'm trying to update dates etc that are on the spreadsheet exported from another database, and update my datebase with those new dates..
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Dec 4, 2006
I want to automatically hide all the tables in the database, and automatically hide any new tables that are created, imported thereafter, except one mastertable.
How do i achieve this?
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Feb 22, 2013
I have table of transaction data, I want to count the number of successful customer transactions but the table includes cancelled transactions with a negative value. I was therefore looking to create a new calculated field for customer count which report either "1" or"-1" depending on if the price is positive or negative. The idea being a count of this would give the customer count. The expression I am using is:
IIf([Price]>=0, 1, -1)
The problem is it I get an error message saying "The calculated field cannot be created" "verify that expression "IIf([Price]>=0, 1, -1)" includes fields that exist in the current table"
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Jan 7, 2008
I wonder if anyone had any suggestions regarding how to link 4 ODBC tables so the info in each of the 4 ODBC tables are in one table. The 4 ODBC tables are linked in from a mapping system. Each table has 80% the same fields with some minor differences. i dont know if a union query would be the best answer in this case as the field in each of the ODBC's tables do not exactly match. Some have 12 fields, some have 14 fields. Any help would be appreciated?
also this would be using Access 2003 if you would like to know. thanks
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Dec 6, 2012
I am building a database to capture monthly statistics on a number of items. I want to ensure that users don't enter statistics for the same item for the same reporting period. I found the following instruction, but can't make it work:
It suggests that I create multiple primary keys in the table
When I do it, it comes back with an error: Index or primary key cannot contain a null value.
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Mar 5, 2013
To prevent duplicate records, I use multiple fields indexes, which worked fine until now. I learned that each "empty" fields are consider unique by Access, so not the best in an index to prevent duplicate records. I managed to have it worked using the default value property to give each "empty" records the same value.
Now my problem is that I have a date field which is optional, but I need to use it as a unique identifier in an index. I could again use a default value, but since it has to be a date, I find it confusing. I would rather have a default value of "No date specified" or "-" or even better, "". Unfortunately none of those works with date fields.
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Jan 13, 2008
Okay I had an idea and I thought I might get ffedback as I am relatively new to this. I went through a period a couple of years ago when I used access alot and was becoming familiar with VBA etc but I havent touched it in 2 years so Im pretty rusty.
I am running a study and need to have to create a database that:
a. collects data about participants
b. Has a number of questionnaires (5), each of which can be filled out by participants.
THe main table has a number of fields that collects info about the participants the most important of which will be the ParticipantID - an automatically generated number which is my primary key.
In table 2/form 2 I will host questionnaire one. This will be linked to Table 1/Form 1 (Particpant Information) by this tables primary key - also the Participant ID. The relationship will be 1:1. Each participant can only have one Participant ID and will only need to fill out questionnaire one once.
Is it possible that when I add a new participant to the Participant Information table/form I also automatically create a record in Table 2/Form 2 (Questionnaire 1), as well as Table 3/Form3 (Questionnaire 2) and so on so that they have the same ParticipantID...?
I was reading a similar query somewhere else and they said to use the Form_AfterInsert Event command? Is this right (see here http://www.pcreview.co.uk/forums/thread-1687644.php)?
I feel a bit stupid but I am willing to learn and try new things Once I get started I think I will be okay. If you could steer me in the right direction it would be much appreciated.
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Nov 12, 2007
My problem is best explained by example;
In Access Database A, I have some linked ODBC tables (to an SQL Server database) and some local tables.
In Access Database B, I have a front end which links to all the tables in Access Database A.
The problem is, when I try to link the tables in B, I cannot see the ODBC tables linked in A. Is there any reason why not? 'Why not link Access Database B to the SQL Server tables directly?', you may ask. Well, there is an answer to that but it is quite difficult to explain. I assure you there is one. :p
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Jan 17, 2006
Hello.
When linking a table via ODBC I usually get asked to pick a field that contains unique values.
This is all very well but I have hundreds of tables to link to across a slow network and would like to leave it running for a few hours.
With the current set up, this is not possible and I have to keep clicking on ok every few seconds/minutes.
Is there anyway to avoid this message so I can just leave it running until it finishes.
Regards.
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Nov 28, 2006
Hi,
I want to import into an MDB table a csv file.
I'm trying to use the bulk copy table.
my function is:
SQL = "SELECT * INTO [my_table] FROM [ODBC;Driver=Micrsoft text driver (*.txt; *csv) ;Dbq=c:\;Extensions=asc,csv,tab,txt;].table.csv"
db.OpenEx( "Driver=Microsoft Access Driver .mdb);DBQ=c:\access.mdb;", CDatabase::noOdbcDialog );
db.ExecuteSQL( SQL );
when i run this function i get an error : "You cannot use ODBC to import from, export to, or link an external Microsoft Jet or ISAM database table to your database"
when i try to import in the same way a dbf file (insted the csv file) with VFP it's working well.
what seems to be the problem? how can i fix it? or if some one know how can i import a large csv file into access DB in an efficient diffrent way?
thanks ishay
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May 28, 2015
I have big problem with connection between ODBC and Access 2007. Everything is linked correctly but I have problem with separator in decimal field. In my country this separator is "," not ".". I found information about connection in MSysObjects.connect table that
Code:
...;BTD=F;BNF=F;BAM=IfAllSuccessful;NUM=NLS;DPM=F;MTS=T;...
I found somewhere that I need to change NUM value from NLS (default) to MS. Do you know how to edit this value? For example Access 2007 see value "123.8" (so it is in my country "123,8" ) like "1238"
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Oct 8, 2013
I am trying to create a one-to-many relationship between these two tables. I want to be able to access the 3 fields on the [Processors] table within reports based on [AllItems]. [AllItems] is a listing of account activity where the [AccountNumber] repeats. I have every field set as the "Primary Key" on [AllItems] as that is the only way to avoid importing duplicate data. I am getting the error: "no unique index found for the referenced field of the primary table"
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