Compare Rows In A Table
Nov 14, 2005
Hi,
I have a table with four columns - A, B, C, D
I want to compare the values in columns A, B and C in row 1, with the values in row 2 and if they are the same, I want to copy the value that is in column D in row 1 into column D in row 2. I then want to move to the next row in the table and compare the values in row 2 with the values in row 3 in the same way. This will continue for all rows in the table.
Any help would be greatly appreciated as my VB is not up to much.
Thanks in advance
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Nov 21, 2005
Not sure if what I want to do is possible, or at least possible the way things are set up.
I have a massive table - c. 6 million rows. It contains data along these lines:
Plan#, Item, Price, Description, Colour, Value, Location, etc.
The primary key would be Plan# + Item. Each Plan# has approximately 1,000 Items, and there is only 1 Item per Plan#. There are only a limited number of Items (c. 1500) and all or only some Items might be assigned to the Plan#. All items under each unique ID# belong together, sort of in a set. So this huge table has approx. 6,000 unique sets (based on Plan#).
To add to the confusion, Item A under Plan#1 may have different information (Price, Description, Colour, etc.) from Item A under Plan#2. I know this isn't a great way to set up data but this is what I have to work with.
Over the years it's possible that the exact same combination of Items with identical values might have been set up for multiple Plan#s. What I need to do is find any Plan#s which have the exact same combination of Item, Price, Description, etc. So if Plan#R has 200 rows and Plan#S has 201 rows, it automatically doesn't match. If Plan#R has 200 rows and so does Plan#T, all information in each record must match between the two Plan#s (with the exception obviously of Plan#).
I don't think this is possible, and if it is I am sure it's not going to be easy. So far the best I can do is to come up with finding duplicates on Item, Price, Description, etc. but that's only one record at a time and doesn't tell me if the two Plan#s match.
Any help or suggestions would be much appreciated.
Thanks!!!
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Feb 6, 2013
I need to compare the sum of a values in a column of rows with the same id. For example:
Code:
ID Value1 Value2
122222 20 40 (these are okay, the sum of Value1 in rows with same ID equal value 2)
122222 20 40
333333 100 100 (ok)
111111 50 100
111111 50 100 (not ok, the values with same id add to 150, so the first row containing this id should be deleted so the the total of Value1 equals Value2)
111111 50 100
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May 1, 2012
Here is what I am trying to do: I have form, and a table which is created from this form. The data is entered a second time using the form to make sure there are no discrepancies.
Any easiest way to implement this? (create a new table (which is duplicate), and then compare them?
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May 1, 2007
Hello,
I am just wondering whether there is any query I could use to compare the data on, say, whether all data in Table A are in Table B although some records in Table B may not be in Table A and give me the record that is in Table A but not in Table B.
Thanks!
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Dec 5, 2007
I have 2 tables with the same structure but some of the data in one field is different
The tables are called Current and New
They both share a field called feesch but in the new table data is updated
The tables have share the same primary key of unique ID
How can I make a query in design view to show the feesch records that don't match?
Thanks in advance
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Sep 1, 2005
Hi
I'm using MS Office 2000, I have an Access database table that contain many fields, namely I need to update FieldA from an Excel Spreadsheet according to the specified primary key of CustomerID. Is there a way to write automate process to import the records from an excel spreadsheet and then place those records in FieldA of the Access Database according to the corresponding CustomerID? The reason I ask is that these two fields are not exactly in the right order in my spreadsheet and my table and to do it manually will take lots of effort.
Your prompt response is greatly appreciated
Thanks
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Mar 6, 2006
Hi there
This is probably quite easy but I cannot make it work so would appreciate some help. I have a table containing vehicle information. I have 2 fields, Current Mileage and Max Mileage. I want to do a comparison of the 2 fields and should the Current Mileage be greater than the Max Mileage, the query returns the Vehicle Registration. Test data has been entered in the table I am querying and I was expecting 1 value to be returned. However the query as I wrote returned either all the vehicle Registrations or none of them. Can someone help with this please.
Thanks in advance for the assistance
Craig:)
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Dec 17, 2004
I'm willing to be this is simple, but I haven't been able to figure it out.
I have created a database with one table, tblUserData. I have one form called frmLogin.
tblUserData has two fields, Username, and Password.
frmLogin has two textboxes for user input, User and Pass, and has one control, cmdLogin.
What I am trying to do is - When a user types their username and password, and clicks on the control
button, the value of User.Value is compared to the Username field of the UserData table.
If a matching record is found, then Pass.value is compared to the Password field from the matching record.
If they match then the program proceeds.
Can anyone point me in the right direction please?
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Aug 9, 2011
I am trying to create a query based on a transaction table which compares the time between two types of transactions.
The initial record would have "A' in the type field and the second record would have "D" in the type field.
each pair of A and D records would be matched on o_time and idnum fields, and I would want to pull each pair and us the datediff function on c_time, using records marked with A as the initial time and records marked with D as the followup time.
Is there any way to accomplish this in a single query or do I need to create two subqueries?
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Nov 19, 2006
Hi,
I am trying to compare two columns' values within the same QUERY table, but I kept on getting the "Data type mismatch in criteria expression" error. What am I doing wrong?
Here is my Select Query Statement:
SELECT qryDedparmDedetail.EMP_ID, qryDedparmDedetail.[Employer Amt], qryDedparmDedetail.[Employer Actl], qryDedparmDedetail.[Admin Amt], qryDedparmDedetail.[Admin Actl], qryDedparmDedetail.[Employee Actl], qryDedparmDedetail.[Employee Amt], qryDedparmDedetail.FirstOfSTATUS, qryDedparmDedetail.FirstOfAGENCY, qryDedparmDedetail.FirstOfTITLE, qryDedparmDedetail.FirstOfFORMAT_NM, qryDedparmDedetail.RepUnit, qryDedparmDedetail.FirstOfDEDTYPE_CD1 AS Expr1, qryDedparmDedetail.SumOfNBR, RepUnit.REPUNITDESC, qryDedparmDedetail.LeftType
FROM qryDedparmDedetail LEFT JOIN RepUnit ON qryDedparmDedetail.RepUnit = RepUnit.REPUNIT
WHERE (((qryDedparmDedetail.[Employer Amt])<>"Employer Actl") AND ((qryDedparmDedetail.LeftType)="01"));
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Dec 1, 2014
I have a form that users put in information and then it updates to a table. It works fine but i would like to add something. Right now there is a text box called item that the user puts in the item number. The problem is that sometimes they put in a wrong number. What i would like to do is have it when they hit the update button to compare that item number to a table that lists all of them. so if the text box doesnt equal one of the numbers in the table dbo_item and the field itm_num, i want it to give them a message box with an error.
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Jun 13, 2013
I am running into an issue when trying to compare data stored within the same table.
tblParcels - holds data relating to an individual parcel of land; unique identifier is ParcelID. No repeating data.
tblValues - holds data relating to the value(s) of each parcel; new values entered annually; unique identifier is TaxID; has field to link to tblParcels. One parcel can have multiple entries for each year tracked.
I have two unbound text boxes on frmMainForm where users can enter Tax Years to compare (txtYear1 and txtYear2). Theory being that users will be able to select any two tax years and compare the parcel values.The report (rptMaster) is built using three queries and is used to show the change in value between txtYear1 and txtYear2:
qryYear1 - pulls all values from tblValues where the TaxYear equals the year typed in txtYear1.
qryYear2 - pulls all values from tblValues where the TaxYear equals the year typed in txtYear2.
qryCompare - joins the results from qryYear1 and qryYear2, along with other common fields, and populates rptMaster.
My problem lies when a parcel does not have any values for one or both of the years entered into the text boxes. I completely understand why, qryCompare can't show any records if there are no results coming from either qryYear1 or qryYear2. What I am not getting is how to work around this issue.I would like for the report to show "$0.00" for the value if there is not a value for that Parcel in tblValues for the year entered.
tblValues example data:
TaxID ParcelID TaxYear Value
1 5 2011 100,000
2 5 2012 200,000
3 6 2012 75,000
In the example above, when comparing 2012 values to 2011 values, my report shows the values for ParcelID 5 but not for ParcelID 6 as it does not have a 2011 value (and won't since information about that parcel didn't exist in 2011).
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Jun 25, 2015
I am programming an Acess Database, the primary data come from an excel sheet. Since Access one to many relationship only works for primary key and another field in another table as foreign key, I can't have normalized database.
I will explain what I mean with a hypothetical situation.
So, let's say I have two tables: WindowT1, CustomerT2.
WindowT1 has fields: WinID (the pk), WindowName.
CustomerT2 fields include CustID (pk), CustomerName, WindowName, WinID.
So, in table "CustomerT2', WinID is the foreign key and I need that field filled in to make one-to-many relationship between these two tables to work. CustomerName and WindowName will be imported and prefilled already from an excel file with append query.
My question is can I make a update query (after the initial append query that brings in the data into Access) such that the criteria is matching WindowName (from CustomerT2) and the update would be the corresponding WinID (the pk number from WindowT1) that would be filled in the field WinID (in CustomerT2)? I know for this to work tables must have relationship and I did that.
Is there a better way to accomplish this task? i.e. through a form (remember info will be prefilled, so can't use combo box to fill in another form field) or maybe can I do this using the first append query (that brings in data)?
I am not good at Macro or VBA. The only thing I have done in code builder is After Update event in forms while using combo boxes. So, if there is no easier solution, I will try to deal with codes.
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Nov 12, 2013
I am making a dp for end of day sales, and i want to compare data in a table to the numbers inputted in a form and see whether this value is higher or lower. the table displays the target sales figures for each day, and the form allows the area mangers to enter in the current day figures.
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May 22, 2015
I'm working on creating an events log. In my table I've got a field that pulls the individual's username (that they use to log into the computer) and logs it against their log entry.
As part of my query (for my daily events log report) I'm pulling up said username.
I'd like to give access to the specific user to edit his (and only his) entries from the report, but I'm getting a type mismatch with the below code:
Code:
If me.UsernameID = "KraussLJ" Or Environ$("Username") Then
DoCmd.OpenForm "frmShiftLog"
DoCmd.FindRecord Me.ID, acStart, , acSearchAll, , acAll
Else
MsgBox ("You are not authorized to edit this entry")
End If
(before you ask, "KraussLJ" is our ops manager who insists on having final editorial control over the shift log before sending it higher up the chain)
I can get the msgbox to run if I block out the
Code : Environ$("Username")
, but beyond that I'm a little stuck. Should this be a dlookup function or am I overanalyzing this way too much?
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Dec 4, 2013
I'm trying to create a query that will compare the data in 3 fields in a record, choose the largest (I also have a criteria to order by if more than 1 field has the same entry and it's the largest of the 3), and then group by that.The fields I will need are as follows:
PRODUCT table:
ProductName
Chemical
ChemicalAbstract
PhysicalState
NFPAHealth
NFPAFlammability
NFPAReactivity
qryQuantityOnHand query (which doesn't link directly to the PRODUCT table, it links through associations with other tables):QOH...I will eventually need information from another table for the final reports, but I don't think it has to be included in this query.
The fields NFPAHealth, NFPAFlammability, and NFPAReactivity each may be 0, 1, 2, 3, or 4...I need to ignore blanks; if 1 of the above fields is blank, they will all be blank.For any record, I need to compare the number in those 3 fields to each other, and choose the largest number and group by that rating.
In other words, if the largest of the 3 numbers is a 3 in the NFPAFlammability field, all those products need to be grouped together.If the same number appears in at least 2 of the fields, the order that determines the grouping is: Flammability, then Health, then Reactivity..Ultimately the report will be grouped as follows:
Flammability
Rating 4
Product 1
Product 2
Product 3
Rating 3
Product 1
Product 2
Product 3
Rating 2
Product 1
Product 2
Product 3
Health
Rating 4
Product 1
Product 2
Product 3
[code]....
and each of the groups will be sub-totalled.I'm stumped at trying to create the query in the first place.The added aggravation here is that we are dealing with 23 stores, each with their own mix of products. I have another table that contains the information about which products are in which store.
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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 10, 2014
In a situation where I imported an excel file with so many columns and split them into two temp tables and they are linked using a key.
the data has a fixed part lets say
Field1....Field2.....Filed3.....Field4...then Field5.....Field6.....Field7....Field8 is the same data range as Field9...Field10...Field11...Field12. I would want to split this data into multiple rows like this
Field 1 Field2 Field3 Field4 Field5 Field6 Field7 Field8
Field 1 Field2 Field3 Field4 Field9 field10 field11 field12 and so own...
What is the best approach?
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Mar 10, 2015
I am trying to assign teams to players. I have an import table with all of the players information listed. What I want to do is determine the count of players in a given city. For every 9 players I want to add a new record to the Team table and assign the team number (auto incremented for each team created). Then I want to add the players to the Players table with the Team Number that was created.
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Jan 13, 2006
A SELECT works:
SELECT *
from mastertable
INNER JOIN secondarytable
ON mastertable.Identicalfield = secondarytable.Identicalfield
But none of these do:
DELETE
FROM mastertable
INNER JOIN secondarytable
ON mastertable.Identicalfield = secondarytable.Identicalfield
**Incorrect syntax near the keyword 'INNER'.**
DELETE
FROM mastertable JOIN secondarytable
ON (mastertable.Identicalfield = secondarytable.Identicalfield)
**Incorrect syntax near the keyword 'JOIN'.**
DELETE
FROM mastertable
WHERE (mastertable.Identicalfield = secondarytable.Identicalfield)
**The column prefix 'secondarytable' does not match with a table name or alias name used in the query.**
DELETE
FROM mastertable
WHERE IN (SELECT *
FROM secondarytable)
**Incorrect syntax near the keyword 'IN'.**
Can anyone help? This should be easy, shouldn't it?!
Thank you.
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Sep 19, 2013
I'd like to learn how to do them quickly and effectively in Access. One of those things seems like it would be an incredibly simple, intuitive operation, but it's not, at least not to me.Say I have some data that really should only be on one table, but it's currently on two tables in Access: "List Main" and "List September Adds." They both have the following fields: "Full Name" "Email" "Address" "City" "State" "ZIP" "Phone."
The first table is my main list of contacts. The second contains new info, consisting of 1. a few new contacts, and 2. updated info for a few of the contacts already in table "List Main."
I would simply like to put all the new contacts from "List September Adds" into my "List Main" table, and I'd also like to fill in a few missing e-mails in "List Main" with newly gathered e-mails for those contacts, info that is in my table "List September Adds."I'm sure there is built-in functionality to do something as basic as essentially turning two pages of the same spreadsheet into one. In fact, I know I could import data from an Excel file and have it "append" to a preexisting table if the fields are all the same.
However, I'd like to know how to do it when the tables are already in Access (without having to learn any SQL, mostly because I'm fairly certain I don't need to know SQL to do something like this). I've heard of Append and Update Queries and given their names, it sounds like they'd be useful, maybe with use of "Totals" and "Group By" to get rid of duplicates; however, I can't seem to get any of this to work right.
Mostly, when I think I am doing an Append correctly, it doesn't add new data at the bottom of a table; it just wipes out all the data that was there, and replaces it with data from the source. For instance, when I've been running an Append Query to get my "List September Adds" rows into my "Main List" table, what I end up with is only the "List September Adds" rows, and all the "Main List" rows gone.
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Jun 1, 2007
The following is for a successful pet grooming business.
I have a Customer Table with a Customer ID as primary key. I have a Pet Name Table with a Pet ID as primary key. One customer can have many pets. The Pet Table is linked to the Customer Table via the Cust ID. I have a Visit Table with an Auto Number for each visit. The Visit Table is linked via the Pet ID number. Each pet can have many visits. That's the problem. We have exceeded the 64,000 rows in the Visit Table. All three linked tables support all the queries, forms and reports. How can I continue beyond 64,000 visits.
Thanks, Jed
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Jun 14, 2007
I tried to search for the answer but not luck. I know there is a max size around 2gb for a DB but is there a row limit for a table or is it based upon size?
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Nov 7, 2006
Hi.
How I can delete all rows from my table whit on query? Also I want that when I delete rows from my table index and other settings will stay in table.
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Dec 17, 2004
Is there any way to get the last 4 rows which have been entered into the table?
Thank You.
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