Duplicate Error Access 2007
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Microsoft Access Duplicate Error
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Delete Duplicates In Access 2007
eliminated duplicate values up vote 1 down vote favorite I have been importing the same type of excel file into MS Access 2007 and have had not problem until recently. The message says I have a key violation when I am overwriting a table. There were duplicates in the excel file (primary key field) which I deleted and I checked the excel file meticulously. I have reimported and
Remove Duplicates Excel 2007
its still showing the same message. What course of action can I take to resolve? Duplicate values (key violation error) Records that you are importing might contain duplicate values that cannot be stored in the primary key field of the destination table or in a field that has the Indexed property set to Yes (No Duplicates). Eliminate the duplicate values in the source file and try importing again. ms-access ms-access-2007 share|improve this question edited Jan 20 '11 at 0:04 Fionnuala 77k665110 asked Aug 7 '10 at 2:26 Sammy 612 What's your unique index in the target table in Access? What are the values in the source fields in the Excel spreadsheet? Access is telling you there is overlap between these, and there must be or it would succeed without error. –David-W-Fenton Aug 7 '10 at 22:33 add a comment| 3 Answers 3 active oldest votes up vote 2 down vote All you can do is zero in on the problem. I am inclined to doubt it's a bug, but even if it is, you still have to find the precise trigger. In the Excel file, pull the key column(s) together, and sort the Excel table for it/them. Add conditional forma
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Ms Access Duplicates In Query
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GUI Design GUI Design Examples Submit Your Examples Resources Resources Database News Knowledge Base Microsoft Access Products, Tools & Add-In's Online Shop UK Visitors US Visitors Info Contact Us Advertise With Us Link To Us Write For Us Competitions Microsoft Access Form Designs Preventing Duplicates from being http://www.databasedev.co.uk/duplicates.html entered There will always be situations where you need to ensure that you do not have duplicates entered into your Microsoft Access database. Ideally you will want to validate data at the lowest level possible, so if you can enforce the rules at the table level (using Primary Keys), that's great. However, while you can customize a field validation message at the table level, it's not so simple for index violations. One possible approach is to check for access 2007 the problem in a Microsoft Access form when the user is entering data, either in the Form Error event, or in the Before Update event of the controls. Obviously, when entering a duplicate of a Primary Key value, Microsoft Access will automatically prevent you from saving the record, however this will only come into action when you may have made various entries in to fields in the form and tried to proceed to the next record. You will ms access duplicate also only be presented with the standard Microsoft Access Error message as shown below: Standard Microsoft Access Error message, when trying to enter a duplicate key value. You will then have to undo the record that you have just entered, and find the original record to make changes or additions. This can be time consuming and frustrating to the user. The following example uses code in the Before Update event of a form control to prevent a user inserting a duplicate value that has been previously entered. When this is detected, the record is undone, and the user is taken to the original value. This happens as soon as you leave the field where you have attempted to enter the duplicate key value. We will use a the following Microsoft Access form and subform, which provides a good example of why we would need to prevent the duplication from being entered: Form showing the Student Number (Main Form) field, that we would like to prevent duplicates from being entered into. By placing the following code sample into the Before Update event of the Student Number field in the main form (top half of the form), this will prevent the duplication, raise a custom error message and return the user to the original record for the Student: Private Sub strStudentNumber_BeforeUpdate(Cancel As Integer) '********************************* 'Code sample courtesy of srfreeman '********************************* Dim SID As