Compare values in in two tables fields

I need to create a procedure which will be able to check if some value in field of one table doesn't exist in the field with the same name and data type in other table.
I'm using two RS-s method to loop trough the data of both tables

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Compare values in two columns present in seperate tab
How can I compare values in two columns (columns are in different tables) ? I also want to display the values that don't match in a separate table.

For eg:

If values in Column1 from Table1 does not match Values in Column1 from Table2 then display those values in a separate table

Is there a way to do this?


Queries to Compare Two Tables
I am trying to compare the data in two tables. The columns are the same, deleted rows, or changes in specific fields across the two tables.

The Query Wizard for Unmatched doesn't quite accomplish what I am trying to do. If TableB is missing a row from Table A then it will return new rows if I select the two tables in the proper order (reversing will return nothing).

I still do not receive anything if simply one field for one row was changed (everything else the same).


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I have a form that takes user input (about 20 text boxes) and writes to fields in a table. Form is locked to one record per instance.

I need to compare the user input to values in a table. The table is structured so that each record is relative to one specific field in the table (also one specific textbox on the form)and each record has three fields with values that determine a 'range'.
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What is the most efficient way to do this?
Should I read the grading into an array and then compare each field (textbox on the form)?
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This article shows you how to start and run the Find Unmatched Query Wizard, how to modify the wizard output, and how to create your own query to find unmatched records.


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I have two tables and they have 3-4 columns (fields) each.
Table1 - fields: Name, address, city, country
Table 2 - fields: Name, occupation

I need to compare the names in both these tables and see what names from table1 are not in table2.


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Im back again. This time I want to compare two tables in two different databases. I have an archive database and I want to make sure that both tables are equal before I delete the information from the production databases table. Ive been looking around and have been finding that I should be using a UNION query but I dont know how.
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Compare records in 2 tables
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I am trying to solve the problem of reviewing records from 2 different tables. Both tables have the same fields both in Name and type. There is 6 fields to each table to compare. Each field can have a different number up to 42. I am trying to see how many of the numbers in a given record for table 1 matches the records in table 2. below is an example of what I am doing.

Tble1 Tble2
N1 = 2 N1 = 5
N2 = 24 N2 = 2
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I have two large csv files that Excel can't fully open so I merged them together using CMD copy *.csv (the files have identical headers so this should be fine).

I opened them in access because what I want to achieve getting the unique values into one table.

So I made a query and I think I have done it correctly but I want to check as it's important. So from this one file I want the unique values is this correct?

SELECT First(Compare.[Email]) AS [Email Field], Count(Compare.[Email]) AS NumberOfDups FROM Compare GROUP BY Compare.[Email] HAVING (((Count(Compare.[Email]))>1));

It's made a query which I tried to export as CSV which failed for the silly reason of the clipboard only being able to hold 65k records so thats annoying. If anyone knows how to get round that that would help too


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I had trouble naming the title for this thread, but here is my issue. I have two tables. Both contain the fields "LASTNAME", "FIRSTNAME", and "MIDNAME". I need to compare table1 to table2 to if a person is in both tables. This is needed because a company has their table and they receive an update of names so thus they need to compare their data. I'm having an issue because the updated excel file that i'm importing for the comparison sometimes uses a full middle name where the companies data only contains one letter for the middle name.

I currently have relationships between the three fields. I would like to be able to search equal between LASTNAME, FIRSTNAME, and 1st letter of MIDNAME. I don't know how to specify just the first character. So when working if one table has Mary A Roberts and the second has Mary Alice Roberts it will see them as being equal.


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I have a query. how do I subtract numerical values btw tables? pls look at the atatched file. I have 2 tables (Table1 and Table2) with several fields [ABC], [XXX], [YYY] . in both tables. I need to subtract the values under these but I need to get what is displayed in Query1 showing individual difference (not overall difference - if so I could have combine the fields into one field like "ABCXXXYYYZZZ " to get the value of 38. I could do this in excel and just pivot out the dataset to get the individual difference but its tedious and I want to learn how to do it in access because I foresee I have to do a lot of such multiple tables subtraction so its better I do this in access


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This article discusses how to compare two tables to identify matching data, and provides sample data that you can use with example procedures.


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I was not getting the exact results through "where not exists"


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I have an unbound textbox on a form for users to enter a password. When the user clicks on a button on the form, I want to compare the values entered in the unbound textbox to the word "chicken".

Can I still compare the values in the unbound textbox even though it's not bound to a field of a table?


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3. From the resulting records do a few calculations. Myabe compare vacancy rates between two properties.

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I have built reports in the past but they were built from a single query.
I have never tried to build a report with a table and a few graphs in it.
Can I have 3 graphs in a single report running from different queries?

Maybe write a few SQL statements on the form, using variables from a users input (dates) to feed the queries?


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So I'm working on some code which will look at two tables. It will take the first string value from one table and then compare it with all other values of the other table finding the closest match.

It will then cycle to the second string value from the first table and repeat the process. Each of the tables has about 1500 entries. Currently the code does is lookup the string values, but when I run the code Access freezes up.

I can't seem to find an error in the loop, but I can't imagine this process taking more than a couple minutes.


Compare two tables and show it in a form
Compare two tables and show it in a form
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