One Large Table? Or Two Different Ones?
Jan 14, 2007
I have two datasets that I am using. They start off with similar information: sitename, siteprovince, sitecoordinates. They also have 5 more fields that have the same type of information. After that there are about 10 more fields with no overlap.
In the original dBase program they came from they were treated as one dataset.
The current structure I am using is Company, CompanyContact, Transaction, SiteDetails (the dataset I am asking about).
Is it better design to breakup the SiteDetails into SiteTypeA and SiteTypeB? I have everything working in one table, but I thought it might be more effecient to have two.
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Jan 18, 2005
I have a table with 140 fields (I know, this is too many). I have a date field that intermittently will not allow data to be entered. There is a pattern to the data it will not accept, but it seems to only occur in certain records and what it will or will not allow seems different in each case. The error I get when I try to save a record is: The search key was not found in any record. I've isolated the error to the level of the table. Have tried compact/repair, removing the index on the field, deleting and recreating the field. Nothing works. Help! :confused:
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Mar 17, 2005
Hi,
To avoid the mind-numbing tedium of have to use make-table queries loads of times, is there a quick (probably VBA-related) way to split a large Access table, of about 350000 records, down into 93 smaller tables, based on a key code field that identifies each group of records e.g. GBW102, GBE999, etc?
Any help much appreciated.
thanks,
Alex
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Mar 4, 2008
I currently have 8 tables in my Database.
How can i extract all the information in those tables and put all the data into one large table? I want to extract everything apart from one table?
and can I format the large table once the data have been put in i.e. insert new Columns at the start, and populate fields based on the value of other fields values?
Any ideas or help? thanks
Kind Regards
Richard
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Mar 1, 2015
This really isn't a large table by Access standards, as it has only about 1 million records, but nevertheless it's taking a long time to run the update query. Here's the query:
UPDATE [Db] INNER JOIN [Small Table] ON [Large Table].text1=[Small Table].[text1] SET [Large Table].[text2] = [Small Table].[text2];
[Large Table] has about 1 million records and [Small Table] has 10 records.
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Apr 28, 2008
I have a table with more than 700,000 records. There are no unique fields or unique combination of fields. I would like to add an AutoNumber field but when I try I get the message:
File sharing lock count exceeded. Increase MaxLocksPerFile registry entry.
If I answer yes I get an error that the new field was not added. Is there any way to add a key foield to an existing database?
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Feb 18, 2005
:eek: I have a large table with 1 damn corrupted record, the database can't be repaird, compact, I can't use the copy ,method since the table is over 9000 record sets.
I tried creating a new table and appending the non-corrupted record into it with no success, it is keep locking on me.
Have you guys tried anything else that works for this situation???
Thanks a bucnh
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Mar 21, 2006
I have a database with a table that contains 360,000 rows. I built a form with four boxes where a user can specify values to limit the result set. And instead of having a new window open with the results, I built a subform and placed it on the main form to display the results.
Here is how it flows:
Main Form -> user enters search criteria
Search Criteria -> feed as criteria in query
Query Results -> display on subform
Subform -> shows on main form
The query is setup to take the values from the main form and either use it if it's not null, or return all values if the field is null.
The problem I am having is that on opening the main form, Access is taking the four null values from the main form search fields, feeding them to the query, which is then feeding the subform. So 10 minutes later when the main form finally opens, I have 360K records displaying in my subform.
What I would like is to be able to open the main form instantly, specify my search criteria, then run the query, then have the query results populate the subform.
What do I need to do?
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Jun 22, 2005
I am a newbie when it comes to Access and ASP but I am trying. I am in the need for some help.
I have a large table in Access 2003 and need to break it into smaller tables (not using a query) where the fields are the same except each of the smaller, new tables will hold info for a specific person. These smaller tables would need tro be linked to the larger.
Is there an easy way to do this? I need to keep it in tables due to the ASP software I use to generate the asp pages.
Is this possible?
My goal is for each user to be able to only view/edit their data and for the large table to reflect any changes made to the smaller table.
Thanks,
Dan
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Jul 22, 2013
I am attempting to create a metrics analysis table from another table. What I would like to do is copy the structure (only) from table 1 into a new table. Change all the fields in the new table to text (except for an ID field which would be an autonumber). Then run a seperate group by query against each column, counting the values in each group (i.e. first query would have two fields The grouped column and the column count.
Once I have these values I would like to concatenate them (with the count in parens) and then push these values back into the new table under the appropriate column.
My code does this. I basically loop through a recordset that runs to each column/field groups and counts and then Edits the new table with the concatenated data.
My first table is 170 fields and 38K records. The issue is that it's too much for Access to handle and it blows up (on field 123) Telling me the File is too large. The file does explode to 1G. Then I can shrink it back down to 67mb by running a repair and compact... and then run the the data for the rest of the fields in that table. When I compact again I get about 80Mb.
So now I have two tables, both with an ID field... so I try to link them together (via a make table query) and meld them into one table... but it keep running into that "File Too Large" issue.
How can I have two tables in a database file with a combined size of 80Mb, but when linked together are too large for the database file? Does it have something to do with having all text fields?
I looked up the limits to MS Access and the field count doesn't appear to be an issue since it's nowhere near 255... So what's the problem here?
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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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Sep 3, 2015
I have a daily report that shows data from previous day for production. When we have new products produced, I would like a field to be highlighted if it is the first time it has come up. I do not want it a unique field just from yesterday, but to analyze the table of all of the production days and highlight if a particular field from a column is unique. Can this be done?
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Sep 17, 2013
I want to make a database of diseases (need to learn them for school and would like a serchable database on my smart phone for future reference).
Unfortunately spent a lot of time making hundreds of pages of word tables before i realized a database would be better. See attached image or pdf. Is there a way to import the tables to Access?
I need to preserve the hierarchic info in the nested bullet point lists. E.g. under treatment i might have a point called Acute treatment, with sub-levels, Step 1, Step 2, etc. with their own sub-levels. I need to maintain this relational hierarchic info.
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Jul 13, 2007
I have a split database, the front end is showing to be 20.5 megs in size but there are only 4 forms and about 6 querys. Can someone tell me how to find what is making it so large?
I did a compact and repair but it did not reduce the size??
Thanks..
Fen
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Jul 17, 2007
I'd like to create a table with 240 fields. I know that the max is 255, however, I'm getting a message "property value too large" after I've created 114. Any ideas? All the number fields are byte size. Thanks!
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Dec 19, 2005
I am currently operating queries in my A2K DB that are 35458 characters (~11 full sheets of A4 paper with 12pt).
It takes roughly ½ second for the form to load due to the heavy query that is also calling functions (calc'd fields) from within, but it works fine.
Are there any problems in this?
I think I heard somewhere that queries have a max length of about 2000 characters or so ... :o
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Nov 14, 2005
I guess I have too many columns in my database and I'm getting the error message "Property value is too large" when trying to open the database table. When I was using Access 2000, I was still able to open the database but using Access 2003, the database will not open. Is there a way around this so I can open the table to fix it?
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Nov 6, 2014
How to get a large .txt file into Access. I know it has too many columns so I selected about 30 columns that I don't need to be 'skipped'. However it is just giving me the error that my file has more than 255 columns - with the 30 selected for skip - it should have about 230 columns.
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Jun 25, 2005
Hi
Many thanxs for replies, Like the idea of compacting.
We are traveling down the path of setting up a delete query.
This will hopefully delete the records but not the structure.
We are networked and a computer Warp2, writes data at Midnight to the sever, and then we use access on Windows NT to view the data.
We can then compact to maintain the database and not allow it to grow to 1.6 GB again.
Any ideas on the delete query thingy would be greatly appreciated.
:cool:
Many thanks for reading this post from a new starter.
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Jul 12, 2005
Hi all, apologies for the long post but this is a long nightmare!
Using A2k on Win2k...Due to roll out a DB today, just made my final tweaks and decided to compact/backup as have done many times before. It's not a split DB but it is secure so I copied the mdw onto my desktop and accessed it using a special compact shortcut which points to the desktop copy DB not the one on the network. When I compacted though Access went about it's business for a while and then threw up the dreaded "Network connection may be Lost" error message (roughly translates as "your database is nicely corrupt now") which I have had in the past when I tried to compact on the network. I've never had this error before compacting locally but anyway I tried again and same error message. I tried opening some forms and stuff and sure enought the DB was corrupt. No probs I thought, I can just go back to the original and start the process again. I used the normal shorcut to open the original DB just to check everything was ok and the same error message appeared with same problems. Minor panic ensued and I thought i'd got the shortcuts mixed up or something... I hadn't, Both DB's were affected.
Next option. Create a new DB and import all the objects. I did that and re-set all the permissions and the "Network Connection Lost" message dissapeared but some really strange things were happening. Forms opened but the buttons on them would do nothing. Then the forms Close button didn't work and the database wouldn't close.
I forced my way out of the DB and re-started my machine. Couldn't even log in to windows. Now at another machine and can log in to windows but DB is still having same problems. My instict tells me that the problem is something to do with the workgroup file becuase how else could compacting a copy corrupt the original? The only common link is the mdw.
Should I re-create the mdw and then try opening/importing the DB objects again? Or is there any way I can un-secure the DB and then re-secure it later?
Any thoughts would be much appreciated.
Thanks, Tom
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Oct 12, 2005
I have a database that keeps track of training hours for each employee. The Training Length is formated as Short Time. I just figured out that short time can only go up to 23:59:59. Some of my trainings will be over that. Does anyone know a way to get around other than splitting up my hours and Mins in the table?
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Jun 1, 2006
Hi,
I am currently using a large Access 2002 database in order to generate various reports.
My two main tables are despatches and returns from which they hold around 1,200,000 records and 100,000 records respectively.
The problem I have is that the reports use various expressions within various queries to generate a single result (percentages per channel etc.)
This is obviously very time consuming and it may take up to around 10 to 15 minutes to get a result from a chain of around 5 queries.
Can anyone suggest alternative methods to generate similar results in quicker time?
(Please note that the tables can not be downsized and records can not be archived)
Many thanks
:)
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Dec 10, 2006
Hi All, please forgive me if I am in the wrong forum.
I have a pretty good size (~6400 table and 700 Mb) single user application. It runs on XP home with office 2000.
It is a financial application (stocks and mutual funds). Each symbol has it's own table. The app ran fine when we were monitoring about 1800 symbols. Now that we are up to 3200, I am getting some odd messages from Access. It can't find tables and also says that tables are opened exclusively by other processes.
Although I do not use explicit transactions, it is like I need a "commit" or refresh of the user table catalog.
Each table has 312 rows (52 weeks / year * 6 years of historical data). So, for half the tables (3200) I do 312 Inserts ("Insert into tablename (col1, col2, etc) values (val1, val2, etc)".
Is there a transaction log that needs clearing? Is there a setting in Access that I need to change?
Any thoughts on my situation?
Thanks in advance
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Mar 8, 2006
I have a large search form, in which I am building a query in the code.
I went to compile the code, and was suprised to receive the error "Code too long for procedure". I had no idea there was a limit, but now I know.
So, I believe I will have to break this code up into chunks, stored on at least one if not more code modules, and call the functions.
To do this, I would have to pass the values entered into the form, to the code module. Build that portion of the query Where Clause, and then return that string value back to the code on the Search form.
Has anyone attempted this before? If so, could you give me a small example of how to pass a value from a form, to a code module, process it on the code module, then pass a resulting value from the code module back to the code in the form.
Thank you for your time!
T.J.
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Jul 12, 2005
Hi
I have a large database with many tables, forms, queries repost etc. These are stored named and displayed alphabetically, is there a way to place them in folders within access so it is easier to organise and locate as i am developing. Or do i just need to rename them all with a section title as the first part of the name?
Thanks
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Aug 19, 2004
I am using MS Access(2000) as a front end to a MS SQL2000 DB. I set up a table link to one of the tables in the SQL server. The table I am linking to has 242 Fields in it. The table shows 21888 rows of data.
In Access, when I set the record source in a Form to this linked table and go to run (Form) view, I get a "Record to Large" error.
In the SQL table - there is one varchar field that is 17 in length. There are about 5 char fields and the rest are numeric or date.
My questions are:
What is causing this error?
What would be a good work around or other possible solutions?
Thanks.
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