How do I stop duplicate entries in a table from an append query?
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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
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)
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?
I am trying to import fresh data everynight into, and thought an Append Query would be the way forward.
It does work to a degree, but how do I stop it from importing duplicates
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.
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
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
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.