How do I stop duplicate entries in a table from an append query?
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My append query selects the credits from my Bank Statement and inserts them into the Ledger. But I would expect the use of the 3 Primary Keys to ensure that only new credits are added to the Ledger.
But I am finding that all credits (including entries already in the Ledger)
I am looking at how best to address this. I do have an autonumber field that I could use to prevent duplicate entries from being imported, but I am not aware of the ability to do 2 successive key check operations on an append query.
My next thought was to append with the duplicates and then do a delete query. I need to keep the record with added data, not the one that will be reimported. Not sure how I could do that query
However, I now need to create another table that could allow for duplicate CAN additions depending on the lifecycle of this hardware and therefore need to add a 2nd criteria to stop duplicate uploads.
Therefore, is it possible to have 2 criteria that if both are met, do not append the record, but if only 1 is met, will append the record?
The other field I'm using will be the date the account was flashed. So, what I need to have is where CAN + Date are matched, ignore record, if CAN or Date are matched, add record and ofcourse if neither exist, add record.
Is it as simple as adding in a 2nd field using Is Null for date as well or would this not work?
It's probably a small thing, but I have never used this append function before and am not totally sure how it runs. What do I need to do to make it append the data that it is passed?
lock violations validation rule violations.
This is a lot of violations for an append query.
After stop running macro get this error cannot find the 'l' you entered into the expression have checked all the table properties, form properties, query stuff, etc.
I have a form and a button in form, user type required records in form and then press button, in event click button I have
docmd.openquer "append query"
but every time in table create duplicate records
For example: My first table is a list of ongoing projects. One project may have an update added to a field, but another project may not. Right now my query is appending every row to the new table whether or not it is the exact same as it was previously (aka no updates, nothing new).
How do I ONLY APPEND NEW INFORMATION
Running into duplicate data in an Access Database can be quite annoying during the hectic workday, so I decided to write up a technique to help identify the duplicate records so you can manually handle them.
I am using a standard Select Query to query data from TableB and then swith to append query to add the data to TableA. This method will copy over all the data, even if it is already present in TableA. I need to filter it somehow to not include redundant data.
The reason I am doing this is because I have a table that cannot be modified by me, and I need to copy that data to a new table to add more fields. I need this table to automatically update when the old table is updated. I think an append query could manage this, but, if there is a more elegant solution, I would be pleased to know