Solved

query matches and not duplicates

Posted on 2011-02-11
12
304 Views
Last Modified: 2012-05-11
code attached
this query displays serial numbers from TableCopy if match serial numbers from Table2-
 
problem: if serial number inputed 2 or more times-
Matches increase the number of records in Table2 and displays duplicate matches

is there a way it only matches one time- if same number inputed again- it does not display?

the data type is text- because- their will be letters in serial numbers-
thank you

SELECT Table2.[serial number] AS SerialNumber, TableCopy.[serial number] AS ScannedSerialNumber
FROM Table2 LEFT JOIN TableCopy ON Table2.[serial number]=TableCopy.[serial number];

Open in new window

0
Comment
Question by:davetough
  • 7
  • 5
12 Comments
 
LVL 120

Accepted Solution

by:
Rey Obrero (Capricorn1) earned 500 total points
ID: 34871676
try this query

SELECT Table2.[serial number] AS SerialNumber, TC.[serial number] AS ScannedSerialNumber
FROM Table2 LEFT JOIN
(Select Distinct [serial number] From TableCopy) TC
 ON Table2.[serial number]=TC.[serial number];
0
 

Author Closing Comment

by:davetough
ID: 34871724
GREAT- thanks-
0
 

Author Comment

by:davetough
ID: 34872115
Hello Capricorn,
I wonder why this code works and then when I delete data in table and import new data into table- it tells me no current record when I try to run query
thank yo
0
Salesforce Made Easy to Use

On-screen guidance at the moment of need enables you & your employees to focus on the core, you can now boost your adoption rates swiftly and simply with one easy tool.

 
LVL 120

Expert Comment

by:Rey Obrero (Capricorn1)
ID: 34872238
did you check if both tables have matching records
0
 

Author Comment

by:davetough
ID: 34872391
yes - am trying to recreate problem in sample database to show you- I create query- works fine- then i have delete all data button and it also closes database. then when I open the database- I have import button to import new data-
Thats when problem of no current record- and something at first about the second 'From' statement-
thank you
i scan in same number to match and it does not help
0
 

Author Comment

by:davetough
ID: 34872463
here is sample of problem- it gives error i first got-
everything is fine untill - I import new data into table
thank you
T-DB.mdb
0
 
LVL 120

Expert Comment

by:Rey Obrero (Capricorn1)
ID: 34872592
where is the data that you import?
0
 

Author Comment

by:davetough
ID: 34872639
I have it in an excel sheet on network and i have users enter data there and then hit a button in database to import it in-
Private Sub Command16_Click()
DoCmd.TransferSpreadsheet , acSpreadsheetTypeExcel9, "Table2", "\\JRSHOP\AAB\Excel\database\Table1.xls", True, "Table1!"
DoCmd.OpenForm "frmImport"
Me.Form.Refresh
Exit_CmdImportExcel_Click:
Exit Sub
Err_Command0_Click:
MsgBox Err.Description
End Sub
0
 
LVL 120

Expert Comment

by:Rey Obrero (Capricorn1)
ID: 34872663
where is the excel file?
0
 

Author Comment

by:davetough
ID: 34872746
on network next to database: here is copy
Table1.xls
0
 
LVL 120

Expert Comment

by:Rey Obrero (Capricorn1)
ID: 34872774
you are importing a blank excel file ?
0
 

Author Comment

by:davetough
ID: 34872838
sorry only numbers in serial numbers field get filled in sheet beforecoming into database
Table1.xls
0

Featured Post

Ransomware: The New Cyber Threat & How to Stop It

This infographic explains ransomware, type of malware that blocks access to your files or your systems and holds them hostage until a ransom is paid. It also examines the different types of ransomware and explains what you can do to thwart this sinister online threat.  

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Phishing attempts can come in all forms, shapes and sizes. No matter how familiar you think you are with them, always remember to take extra precaution when opening an email with attachments or links.
This article describes a method of delivering Word templates for use in merging Access data to Word documents, that requires no computer knowledge on the part of the recipient -- the templates are saved in table fields, and are extracted and install…
Familiarize people with the process of utilizing SQL Server views from within Microsoft Access. Microsoft Access is a very powerful client/server development tool. One of the SQL Server objects that you can interact with from within Microsoft Access…
Learn how to number pages in an Access report over each group. Activate two pass printing by referencing the pages property: Add code to the Page Footers OnFormat event to capture the pages as there occur for each group. Use the pages property to …

730 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question