How To Compare The Elements Of Two Tables
Aug 25, 2004
Hello to all. The problem that I am faced with is that I have a master list with all the current users and an updated list with all the current users and new users. What I have been asked to do is to compare the information in these two tables and have been given the following steps.
1. If name (surname, first name) exists in both lists do nothing.
2. If name exists in Update list but not in Master list then insert a blank row in the Master list and add the following Update list fields to this row: ¨
3. If name does not exist in the Update list then remove the entire row that contains that name from the Master list.
4. If 2. condition ("name exists in Update list but not in Master list") below applies, then insert the blank row with some kind of marker (e.g. "*") in a column on the far left. This will allow us to distinguish between:
So that is what I have to do can someone please tell me what a quick to do this in access would be. Thanks
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Sep 10, 2013
I am trying to find a way execute various "like / is not like" commands on a field within a table. Rather than build 30-40 different "like / is not like" commands to execute on this specific field, I would prefer to have one "like" comand and have it's elements listed in a reference table that I can call into the "like" commend or function.
In this way I can change the "Like" statement filtering criteria by simply adding or deleting filter elements from the reference table rather than have to modify the "like" command's hard coding.How to do something similar, perhaps using a different function or macro?
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Oct 4, 2012
I'm creating a catalog that shows all the equipment we use in our company. The problem is that most of these equipment don't have the same properties, or fields. For example, all of them have a code, model, supplier and price.
However, most of them have different properties like size, orientation, or material.My first attempt was using one-to-one tables.
My database is formed by a main table (catalog), a type table (which lists all the types of equipments the table has, e.g. control valves, tanks, field instruments, etc), and smaller tables for each type of equipment (the table for control valves has the size and material field; the table for tanks has connections and orientation field; and the table for field instruments has the fields of dial size and connections).
All of these small tables are connected to the main table using a one-to-one relationship.My question here, any better way to store and access these type of data.
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Jun 7, 2013
I have a .mdb file (access 2003) which has ballooned in size to 1.2GB and I'm not sure why. I tried deleting some older tables (which were copies and had about 38,000 rows each) but it hasn't made a dent. Is there a way to show all the database elements tables, forms, macros, modules etc and list their sizes so I can see what has caused the size to increase?
There are 3 tables linked via ODBC which have tens of thousands of rows but as these are linked I wouldn't have thought they would have increased the size at all?
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Jul 10, 2015
I inherited a database that has two tables that are structured identical; one called tblcurrentdata and the other called tblpriordata. The user wants a report or export query that only shows records that has differences between prior weeks data and the current weeks data. The tables have 12 fields of data in a record per quote number. The user wants a query or report to identify the QuoteNum and any changes between the prior and current records. The table structures are as follows:
Code:
tblCurrentData/tblPriorData:
QuoteNum
CoName
State
ZipcodeNo
priorityColor
[code]...
QuoteNum 12345 field 5 (prioritycolor) changed from red in the prior week to green in the current week and field 7(POC) changed from Scott in the prior week to Jonson in the current week.QuoteNum 23451 did not have any changes therefore does not need to be listed in the query/report Unmatched query doesnt work because it does not compare multiple fields. I tried to structure a union query and use <> in each field but got too tedious and didnt give the expected results.
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May 31, 2007
Situation:
Have 2 Tables that contain the same information, one table was used during registration and had the Data changed
Question:
How do I pull a comparison query to match the registration table to the Main table and pull only the data that is different so I can update the main table with the new Information? :confused:
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May 5, 2005
hello, i have checked out the forum for pevious Q's to this problem and found the below.
http://www.access-programmers.co.uk/forums/showthread.php?t=80692&highlight=compare+tables
only problem is thats its writen at a bit too technicle a level from where i am. i've done some investigation into the problem though.
found out i need to use the docmd.transferdatabase function to import the tables i need to compare into my current db.
my question is this. how does it import them, does it create new tables within the current db or is it put somewhere in temp memory for use only while db is open, not sure how it would work. ideally i would like it to import tables, do the table comparison then create a report of the differences or make a new table showing the differences, then it reverts back to how it was before i imported it. i.e. he current databse is unchanged except for maybe a new report or new table (the results).
thank you for any advice.
Neil
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Sep 27, 2007
Hi,
I need to compare 2 tables with Same Structure in a Database and pull out records that are not matching in both the tables. As anyone done similar task in Access 2002, if so please let me know how this can be accomplised.
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Oct 5, 2007
I have two tables that have the exact same structure. They both started with the same data, but each were changed separately. (Two copies of the same DB, editted separately). I need to review the data in each record and determine what has changed or if records have been added. Is there an easy way for me to do this? (Note: Each record does have a primary key)
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Apr 6, 2006
I have company names in 2 tables to compare, but the data is slightly different but same companies. I want to know what companies are in one table but not in another. Here's an example:
Company Name in Table 1 = Virtual Micro
Company Name in Table 2 = Virtual Micro Technologies
Same company, but the spreadsheet I imported for Table 2 had the full name for the company, so therefore they are not compared the same and the query result shows them to be different.
Do they have to be exactly the same, or can I compare a certain number of characters or somehow use the "like" criteria filter?
Jen
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Feb 7, 2006
It need to compare two tables where the ID Number is not equal. Specifically I need to update new poducts in a table, but only those ID#s that are not already listed.
I know how to compare two feilds where they are not equal...
i.e. [New_Table].[ITEM_NUM]<>[Old_Table].[ITEM_NUM]
...but I'm currently limited by the join properties in the tables, since I'm comparing IDs and not the feilds. ANY IDEAS?
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Apr 3, 2014
I work in retail and am trying to compare items that are on auto-replenishment for a particular location to items that the location should have in their retail assortment to make sure that all of their items are on auto-replenishment. I need to also perform the comparison backwards to find out if any items are on auto-replenishment that should not be because they are not carried in the location's retail assortment.
I have attached a file below that shows the files I am working with. The first tab "items on replen" show the item # (in text and general formats) along with the location number, the min and the max. The 2nd tab "POG's by Center" show the retail planograms assigned to each center. The location# is at the top of the file and the planogram numbers fall below each location #. The 3rd tab shows the items on each planogram. The first thing I need to do is convert the planogram # into items on each planogram in each center. This is what I would need to use to compare to the items on replen.
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Jul 20, 2007
Hi,
I'm trying to compare partial text records across two tables.
The first table simply has a description, such as:
DescriptionHammer
Bone Saw
Power Saw
The second table is a list of terms and a category, such as:
Term, Category
Hammer, 1
Saw, 2
I'm looking to build a query will compare the two and assign each description a category based on the partial match. It seems like this should be fairly easy to do, but I'm struggling to find anything to point down that path.
Any ideas?
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May 15, 2013
i import data into a Landing table, this will always contain d days woth of data, i then run an apend query into another table were the records are stored up to 20 days, the problem i face is some of the record data may change for eample a field called ShippedQty may be 0 in a monday but on tuesday it may say 5
Import on monday
Product ShippedQty Date
123____ 0 ________01/01/2013
Import on Tuesday
Product ShippedQty Date
123____ 1 ________01/01/2013
I need to look at any changes and updatein the master table, is there a way to do this.(I cannot change the import as its the only way i can get the data)
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Mar 13, 2013
I have an access application that I've developed and given to people and now i'd like to update it. I have a "master" database that I use for development and I would like to compare the users databases to this one and apply any changes that I've made to the database schema without having to remember all the new fields, tables and everything else I've added.
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Jan 25, 2012
I have these tables:
Table1:
ID, Date, Code
Table2:
ID, Date, Code
Now I need to compare these two tables based on ID and Date and show matching records, the ones extra in Table1 and the ones Extra in Table2. How can I do this?
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Mar 20, 2005
I would like to compare 2 tables by looking only at the names of the fields, data types and their properties (e.g. required yes/no). I am searching for a method to export this information to another table and then make comparison. Maybe sth. similar to “documenter” or another tool. Some ideas would very much appreciated. Thanks Bartek.
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Aug 25, 2005
Been trying to crack this one for a while hoping someone on here might be able to help me. ;)
I have a table with a list of required software and a table with a list of computers and the software installed software. I made a query that displays the machines with the required installed. My problem is if a machine has more than required then it does not display the record. If it needs Office, Photoshop but has office, Photoshop and quark installed then it does not display that machine.
This should be quite a simple thing, I have played with Like, NOT, Where and others but with no luck...
Any help would be greatly appreciated.
Graeme
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Apr 18, 2013
I am putting together a database for work, I have a table that is used to refer to (this table is part of our production system) in this table it lists products run, dates run and who has run.
I have the training records data table, this lists; who, machine and status: "trained" "refresh required" " not trained"
I want to build a query so that it searches the production table for the last 6 months worth of records & if an operator that is in the training table (WHO) as status (trained) is not in the production table it outputs a "to be refreshed" report or amends the records from trained to "refresh required" ...
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Oct 18, 2014
I have three tables: Table A, Table B and Table C
Fields of Table A: Truck No, Capacity
Fields of Table B: Consignee ID, Capacity A, Capacity B and
Capacity C
Fields of Table C: Consignee ID, Final Rate
Input form is based on Table C:
1-I select Truck No using a combo box and it shows the Capacity from Table A using DLookup.
2- I enter the id no. in the field of Consignee ID and it returns the values of Capacity A, Capacity B and Capacity C using DLookup from Table B.
So I have to write manually one final rate in the field of Final Rate in the form.So I want:When I enter id no. in the field of Consignee ID, it matches with the Capacity in Table A and shows the matched result only in the field of Final Rate of Table C.
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Nov 2, 2007
Hi
I am trying to compare data in two different tables and list the data that does not match. Not sure if this is possible. Details below
Table 1
xyz - A1 - Do not use
ABC - A4 - Use
Table 2
123 - A1
The result of the query should show me
A4 (as this does not appear in table 2
I am not too familiar with Null values as there will be many null values that i want to ignore.
Any help will be appreciated.
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Jun 26, 2013
I have table A with a list of Work Instruction references (WIREF) and a Issue number (ISSNO).I have Table B wth employees and they too have a Work Instruction (empWIREF) and Issue number (empISSNO).I want to check if the Work instruction Issue has changed since the employee was trained
check:
WIREF = empWIREF and ISSNO <> empISSNO for all records in table B
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Jul 11, 2014
I am trying to concatinate string in a loop to generate a dynamic SQL to compare 2 tables. But I am not getting the result I want
Code:
Set rs = CurrentDb.OpenRecordset("r1")
Set rs2 = CurrentDb.OpenRecordset("r1_old")
columnCount = CurrentDb.TableDefs("r1").Fields.count
strSQL = ""
For I = 0 To columnCount
[Code] .....
I am trying to achieve something that reads like the following
r1.Field(0) = r2.Field(0) AND
r1.Field(1) = r2.Field(1) AND
r1.Field(2) = r2.Field(2) AND
.....
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Dec 2, 2014
I have a form where when the user clicks on the browse button then excel workbook filepath gets stored in the textbox as below:
Code:
Private Sub CommandButton1_Click()
ChooseFile
End Sub
Sub ChooseFile()
Dim fd As FileDialog
Set fd = Application.FileDialog(msoFileDialogFilePicker)
[Code] .....
Please see attached the excel workbook. Everytime the user will select Excel workbook using Browse button. Now in that file , the first sheetname will always be "Summary". I want to perform the following steps:
1. So now I want VBA code to copy the data from columns "Withdrawn","Obsolete","Updated","LitRef" from Summary sheet to the Access table named tblSummary.
2. When the data gets copied in Access table then write So VBA code that will check if the data in field LitRef in table "tblSummary" is present in field "Reference" of Access table "tblliterature" . if its present then check in the tblSummary , which corresponding fields out of "Withdrawn","Obsolete" and "Updated" stores "Y" .
3. If "Withdrawn" field value is "Y" then change the status of corresponding record of tblliteraure to "Withdrawn"
4. If "Obsolete" field value is "Y" then change the status of corresponding record of tblliteraure to "Obsolete"
5. If "Updated" field value is "Y" then change the status of corresponding record of tblliteraure to "Updated" .
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Nov 19, 2006
Hello can anyone help me with a code or application example of how to hide all db elements. I have a database and i want only a main form to appear for users and tables, code, etc to be hidden.
Thanks!!
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Jun 10, 2013
how can I see the size of all elements on the DB, Tables, Queries, etc...
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