473,789 Members | 2,617 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

compare two tables using this module?

In the article "Delete Duplicate Records From Access Tables"
By Danny Lesandrini writes the following:

This final suggestion is the most flexible and accurate. Given any
table, it generates a recordset of appropriate fields (excluding memo
and binary image fields) and dynamically loops through the fields'
collection to perform the recordset compare.

In this example, two recordsets are used, one being a clone of the
other. When a duplicate is found, it is deleted from the first
recordset and the next record is examined. When it has determined that
the records do not match, both recordsets are advanced. The code for
this solution is shown below. Copy and paste it into an Access module
and try it.
Sub DeleteDuplicate Records(strTabl eName As String)
' Deletes exact duplicates from the specified table.
' No user confirmation is required. Use with caution.
Dim rst As DAO.Recordset
Dim rst2 As DAO.Recordset
Dim tdf As DAO.TableDef
Dim fld As DAO.Field
Dim strSQL As String
Dim varBookmark As Variant

Set tdf = DBEngine(0)(0). TableDefs(strTa bleName)
strSQL = "SELECT * FROM " & strTableName & " ORDER BY "
' Build a sort string to make sure duplicate records are
' adjacent. Can't sort on OLE or Memo fields,though.
For Each fld In tdf.Fields
If (fld.Type <> dbMemo) And _
(fld.Type
<> dbLongBinary) Then
strSQL = strSQL & fld.Name & ", "
End If
Next fld
' Remove the extra comma and space from the SQL
strSQL = Left(strSQL, Len(strSQL) - 2)
Set tdf = Nothing

Set rst = CurrentDb.OpenR ecordset(strSQL )
Set rst2 = rst.Clone
rst.MoveNext
Do Until rst.EOF
varBookmark = rst.Bookmark
For Each fld In rst.Fields
If fld.Value <> rst2.Fields(fld .Name).Value Then
GoTo NextRecord
End If
Next fld
rst.Delete
GoTo SkipBookmark
NextRecord:
rst2.Bookmark = varBookmark
SkipBookmark:
rst.MoveNext
Loop
End Sub

How do I put this into a access project so I can compare two tables?

Thanks
Reply With Quote

Nov 13 '05 #1
0 4511

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

3
2084
by: Stephen | last post by:
I have to write a .Net application which can compare SQL Databases including things like: - DB structure, PK's, FK's, indexes and types of indexes i.e. should be able to detect if the same index has cascade set on one db and not on another, or unique on one and not the other, Constraints, Triggers, Stored procs, Users, Roles. I downloaded the SQL Data Compare 3.0 application 14 day trial and it seemed really good however does a bit more...
5
10882
by: Megan | last post by:
Hi everybody- I'm helping a friend with a music database. She has an old one and is creating a new one. She wants to compare records and fields in the old database with records and fields in the new database. For instance, her old database has a table with Band Info in it. Her new database also has a table with Band Info in it but slightly different. I was wondering if there was an easy way to compare the fields from similar tables in...
9
5604
by: geronimo_me | last post by:
Hi, I am atempting to compare part of a field with the whole of another field in access. Is this possible? Basically I have 2 tables with the following info: Table1 Field1 = MR.
4
4989
by: dfs9 | last post by:
In the article "Delete Duplicate Records From Access Tables" By Danny Lesandrini writes the following: This final suggestion is the most flexible and accurate. Given any table, it generates a recordset of appropriate fields (excluding memo and binary image fields) and dynamically loops through the fields' collection to perform the recordset compare. In this example, two recordsets are used, one being a clone of the other. When a...
9
6619
by: VMI | last post by:
I have two tables and I want to compare these two tables with a query( ie. "select * from A where B.key = A.key") and the result will be stored in a 3rd table (table C). is this possible? If necessary, I can create the schema for the 3rd table (C) since it'll be exactly like table A. But I'm more interested in being able to store the resulting set into another table. Thanks.
17
4534
by: Mark A | last post by:
DB2 8.2 for Linux, FP 10 (also performs the same on DB2 8.2 for Windoes, FP 11). Using the SAMPLE database, tables EMP and EMLOYEE. In the followng stored procedure, 2 NULL columns (COMM) are selected into 2 different SP variables and compared for equal. They are both NULL, but do not compare as equal. When the Not NULL columns (SALARY) are compared, they do compare as equal.
4
2082
by: =?Utf-8?B?TmlrbGFz?= | last post by:
Hi Look at the TODO in the code. The commented code do not work, but the code below the commented one does. How do I do to compare Types? foreach (Type typeInAssembly in typesInAssemply) { // typeLoadException.Types can generate null values. if (typeInAssembly != null && !typeInAssembly.IsAbstract) {
5
2672
by: Edd E | last post by:
Hi, I have a database to store my analyses (Access 2002, WinXp), the basic structure is: TABLE 1 = Sample Info TABLE 2 = Analysis type 1 TABLE 3 = Analysis type 2 TABLE 4 = Analysis type 3 ....where each table stores results of a different type of analysis
1
2236
by: dbanrman | last post by:
I have a module in a shopping cart program where a sellers logs in and adds product. As usual the seller logs in with an email and password which is stored in the mysql table _supplier_admins. This table also contains the field supplier_admin_name. When the seller adds product they currently have the choice to select a manufacturer. For later reporting reasons I am attempting to change the default manufacture depending on the seller logged...
0
9666
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look ! Part I. Meaning of...
0
9511
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
0
10408
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
0
10199
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
0
9983
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
0
9020
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
1
7529
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
0
6769
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
1
4092
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.