Delete Records from Table using Query Results
in [Queries]
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From: SITCFanTN on 7 May 2010 11:38 I have a table named "Records" that contains a field "Customer Number". I need to delete all the records in table "Records" if the "Customer Number" is also in the table named "Transfer". Is there a simple way to accomplish this? Thank you!
From: John Spencer on 7 May 2010 12:18 Use a delete query DELETE FROM Records WHERE [Customer Number] in (SELECT [Customer Number] FROM Transfer) In query design view == Add the table Records == Select the customer number into the list of fields == Select Query: Delete from the menu == Enter the criteria under the customer number field in (SELECT [Customer Number] FROM Transfer) John Spencer Access MVP 2002-2005, 2007-2010 The Hilltop Institute University of Maryland Baltimore County SITCFanTN wrote: > I have a table named "Records" that contains a field "Customer Number". I > need to delete all the records in table "Records" if the "Customer Number" is > also in the table named "Transfer". Is there a simple way to accomplish > this? Thank you!
From: SITCFanTN on 10 May 2010 14:51 Hi John, When I use the delete query you gave me, all the records I have in table named "Records" are deleted. I just need the records deleted that contains a duplicate "Customer Number" in the table "Records" and that also appear in table "Transfer". Do you have any idea what I could be doing wrong. I'm using exactly what you gave me below. As always I appreciate your help, thank you. "John Spencer" wrote: > Use a delete query > > DELETE > FROM Records > WHERE [Customer Number] in > (SELECT [Customer Number] FROM Transfer) > > In query design view > == Add the table Records > == Select the customer number into the list of fields > == Select Query: Delete from the menu > == Enter the criteria under the customer number field > in (SELECT [Customer Number] FROM Transfer) > > John Spencer > Access MVP 2002-2005, 2007-2010 > The Hilltop Institute > University of Maryland Baltimore County > > SITCFanTN wrote: > > I have a table named "Records" that contains a field "Customer Number". I > > need to delete all the records in table "Records" if the "Customer Number" is > > also in the table named "Transfer". Is there a simple way to accomplish > > this? Thank you! > . >
From: John Spencer on 11 May 2010 08:46 That indicates to me that the table Transfer contains all the customer numbers that are in the table Records. If that is the case you need a way to delete just the duplicates. The next step is to determine which records in the Records table you want to keep. If you have several records with the Customer Number 12345, what criteria would you use to determine which record to retain? Or does it matter which record you retain? There are several techniques that can be used depending on the design of your database and what relationships (if any) are defined that involve the Records table. John Spencer Access MVP 2002-2005, 2007-2010 The Hilltop Institute University of Maryland Baltimore County SITCFanTN wrote: > Hi John, > > When I use the delete query you gave me, all the records I have in table > named "Records" are deleted. I just need the records deleted that contains a > duplicate "Customer Number" in the table "Records" and that also appear in > table "Transfer". Do you have any idea what I could be doing wrong. I'm > using exactly what you gave me below. As always I appreciate your help, > thank you. > > "John Spencer" wrote: > >> Use a delete query >> >> DELETE >> FROM Records >> WHERE [Customer Number] in >> (SELECT [Customer Number] FROM Transfer) >> >> In query design view >> == Add the table Records >> == Select the customer number into the list of fields >> == Select Query: Delete from the menu >> == Enter the criteria under the customer number field >> in (SELECT [Customer Number] FROM Transfer) >> >> John Spencer >> Access MVP 2002-2005, 2007-2010 >> The Hilltop Institute >> University of Maryland Baltimore County >> >> SITCFanTN wrote: >>> I have a table named "Records" that contains a field "Customer Number". I >>> need to delete all the records in table "Records" if the "Customer Number" is >>> also in the table named "Transfer". Is there a simple way to accomplish >>> this? Thank you! >> . >>
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