Tables :: Query Off Of A Junction Table - Multiple Categories
Sep 26, 2013
So I have a form that has a sub form on it (based off of a junction table), indicating which category a particular project belongs to. It can belong to multiple categories:
ProjectID
100
Category
Admin
Finance
But I want to run a query to find all of the projects that are both admin and finance. When I do that now, it comes up as two separate records in the query, which is fine... but I have to know the projects before hand to find if it's in both, because it returns heaps of records, anything that says admin or finance... and that defeats the whole purpose. I want the query to show me JUST the projects that have both of those in their subform..
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Dec 14, 2007
Hi there.
I'm trying to archive records by using append and delete queries that span accross 12 tables.
the VBA will execute them all. However, I have a junction table near the end; It will be the Junction table, then a parent then a child table. I can get the junction table keys deleted but after that I can't get the Parent and the child table records deleted.
Does anyone know how to do this. the parent table can't delete any records because I've deleted the junction table keys first but if I delete the parent table keys access obviously wont let me because it's leaving orphan records.
I'm sure there's a way to do this. hope someone can help me.
Thanks.
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Dec 27, 2012
Suppose I receive boxes and store them in a room. Each box can contain items that are either shaped as cubes or spheres and I have to allow for the addition of more shapes in the future, but only one shape can be in each box. Each box contains a random number of shapes and two boxes may, or may not, contain the same number of shapes as another.Cubes can be either Red or Green, Spheres can be either Blue or Yellow.
I wish to set, and have the ability to change, how many cubes and how many spheres, on a percentage basis, I wish to have (e.g., 60% Cubes and 40% spheres).I also wish to set, and have the ability to change, what percentage of cubes I want to be Red and Green and which percentage of Spheres I wish to be Blue and Yellow (e.g., Cubes -Red 70%, Yellow 30% )
e.g. -- I have several boxes totaling:
Cubes
Red 30
Green 40
Spheres
Blue 10
Yellow 20
My goal is to produce three reports.The first report would provide the Target and Actual number of Cubes and Spheres expressed as a Value and %. The #'s would simply be calculated from my desired % . So, if I wanted to have 60% cubes and I had 100 Shapes, my target # would be 60. If I had 200 Shapes it would be 120. (i.e., The actual number of shapes I have is simply a factor of how many I receive and I have no control over this.)
The First Report would look like this
Target % - Actual % - Target # - Actual #
Cubes 60% 70% 60 70
Spheres 40% 30% 40 30
The second and third reports would be the same format but would break down cubes into red and green and spheres into blue and yellow.I can accomplish the Report that breaks down the shapes but I am running into problems with the next level as I need the total number of shapes and the the total number of only Cubes or Spheres to insert into the expressions.
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Nov 20, 2004
Hi, I have the following structure:
Products 1-M ORDER DETAILS M-1 ORDERS M-1 CUSTOMERS
I have ORDER DETAILS set as a junction table so that many products can be recorded within one order. All is good apart from when i go into ORDERS and create a new order. I click the subform which links to the ORDERDETAILS. I then pick a product number(look up from products table). The problem is this: In the ORDER DETAILS I want to display the unit price of this product simply by picking the product id.
Eventually this would form the basis of an order form where I can pick Product Id and have it display unit price.
Any ideas on this one, I'm sure its quite simple!!
Thanks in advance
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Feb 6, 2014
Attached is my many to many relationship setup. I would like to prevent the possibility of entering the same person more than once for the same training event. I am assuming that I do this by setting an index setting for a field the junction table?
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Dec 8, 2013
I explain , I have 5 tables :
Class ( classID , classname,... )
Student (studid , firstname, lastname , classID ,....)
Course( courseid , coursename )
Term ( termid , termname , begindate , enddate )
Score ( scoreid , studid , courseid , termid , score)
Note :
1) A class can contain one or more students (one-to-many between Class and Student tables)
The table "Score" is a junction table between three tables : Student , Course and Term because it contains three foreign keys ( I could use a combination of 3 foreign keys to make a primary key ! ) .
The tables ; "Class", "Student", " Course ", "Term " already contain data for each table I created a data entry form .
My biggest problem is how to create a form to enter students' grades or scores for each student that belong to his class.
I do not know how to do it especially since the idea is that :
On a form I would like to use ComboBox to select a class that displays student's list from class selected and a ComboBox in same form to select course and another ComboBox to select a term and then enter grades or scores for each student
This is my general idea to enter students' grades. The rules are :
A class contains one or more students
Each student takes one or more subjects.
Each student gets scores for each subject and each term(quarter)
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Jun 24, 2014
Is there an easy way to auto-populate a Junction table [in access 2010] given the following two tables with a many-to-many relationship for Tasks? The two tables are
Table 1) tblTasks (TaskID (PK), Description), and
Table 2) tblMeasures (MeasureID (PK), Description, Tasks)
If JCTN table is JCTN_Tasks_Measures (TaskID, MeasureID), is there a way to populate when tblTasks(TaskID) == tblMeasures (Tasks)?
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Feb 5, 2015
I am facing the difficulty to solve the calculation of my Employees payment table in query, employees having three type of payments 1. Leave 2. Air ticket 3. EOSB so I have created three different queries named Airticket_Accruals, Leave_Accruals, EOSB_Accruals for these tables.
The problem is I need to include how many payments have been done to every employee in total to my every individual query (airticket,leave & EOSB) than I will less the accrual that will give me the balance I need to pay them.Field for Payment table is as follows and it has relation with Employees table with Emp_ID field.
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Apr 12, 2013
I have 10 tables, 30+ fields on each table (every table has the same 'account number' field). I only need from 5 - 20 fields from each table. How do I get the certain fields from each table and put them in a table, query or report?
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Aug 9, 2006
Hi guys,
I am implementing a new database (Access 2000) for my company.
It contains contact details of a subscription base.
Four tables are present MEMBER, ORGANISATION, EVENTS and CATEGORY.
My problem is; people attend events, and i want to record this in the database. Each event has an event ID field, and an event description field.
When recording the events which people attend, i could just use the event ID field, but problem is that people can obviously attend more than one event..
Also;
People belong to a certain category
Again i have a category ID field, but people can belong to more than one category.
Any ideas on how to record this info??
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Jan 20, 2005
Hi
I've built a contacts database which consists of one table containing contacts and services provided and a table with a list of categories, each has a PK autonumber id field. My problem is that individual contacts could fall into multiple categories, could somebody tell me how to do this.
Many Thanks
Anita
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Sep 18, 2007
In a table I have:
- Category (A, B, C)
- Family (A1, A2, A3, B1, B2, etc)
- Item
- Sales
I'm looking for a way to get the top 10 items in each category + family based on sales (ie: top 10 in A-A1, then A-A2, then A-A3, etc). When I try using the top function, it doesn't treat each category + family combination as unique. Any ideas?
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Jul 12, 2005
Hi!
I need to create a database of the info of a few hundred companies. Each company (food producers) specializes in various product categories, not just one. This is my problem/question: each company entry should then have a possibility to have as many product categories as needed. How can I do this without using "free text" fields? The website user should obviously also be able to search the db - by clicking checkboxes with the categories maybe?
(+Also: When the admin user needs to add the info of a new company (with, say, 9 product types) into the database, what kind of an SQL clause I need to INSERT INTO the db? For example if the product categories where laid out as checkboxes, and the user would just click the ones he wants.)
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Mar 2, 2005
Hi, can anyone explain to me in simple terms how junction tables work and how i would go about creating one?
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Oct 11, 2005
I have created a junction table in my database.the tables being linked are tblplayerInfo to tblGuardianInfo. The junction table containd the PK of both these tables.
A player can have more than one guardian (Mum,Dad, etc) and a Guardian can have more than one player (two sons, etc)
On my form i display both sets of info. The player info in the main form and the guardian info in a subform.
I want to be able to add a new guardian to a player.
How do I update the junction table to reflect the new guardian addition, or does Access automatically create the record in the Junction Table (if so How)
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Sep 27, 2007
I would like to create a database of organizations in my area that provide particular services. I had initially created an Excel spreadsheet, but decided that I'll probably need an Access database, so I converted the format.
I have one table that has the name of the organization, contact information, hours, and other info. In the original Excel spreadsheet, I used strings in two other columns for "languages" and "areas served". Some organizations offer services in more than one language and some operate in more than one geographical area. I've read posts, some books, and info on other sites and it looks like I'll need to use two many-to-many junction tables (one for each of the two remaining columns described above).
So, what I have done so far, is this:
Table: "Resources"
ResourcesID (AutoNumber)
Organization/Program (Memo)
Address (Memo)
...
Table: "Areas"
AreasID (AutoNumber)
Description (Text)
Table: "Languages"
LanguagesID (AutoNumber)
Description (Text)
JUNCTION Tables:
Table: Resources_Areas
Resources_AreasID (AutoNumber, PK)
ResourcesID (Number)
AreasID (Number)
Table: Resources_Languages
Resources_LanguagesID (AutoNumber, PK)
ResourcesID (Number)
LanguagesID (Number)
I have several questions, and I hope that I'm asking the right ones.
First, my junction tables, when I initially set them up have no information in them when I just open them (when I don't use the Design view) -- they just show the column headings. Is this right?
Also, when setting up the relationships, do I need to check the "Enforce Referential Integrity" box? And if so, it seems like I need to change the "Indexed" property for the PK's of all three of the main tables (not the junction tables) to "Yes (No Duplicates)" -- right?
My main problem is that I don't understand now how to assign multiple languages or multiple areas served to each record in the Resources table. Originally, as I explained above, I had these as strings in a particular cell in Excel (like, "English, Spanish, French"). Will I be deleting those two columns from the Resources table?
I can provide what I've got so far if that would help... and I would greatly appreciate any assistance (explanation, link to good tutorial, example databases, etc.). Thank you so much,
Matt
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Jan 5, 2008
I'm at a place in my design where I don't want to go further without advice for fear of really making a mess.:o
I have Products, Customers, Customer Locations, and Customer Models that can have any number of combinations. I've joined what I think makes sense at the lowest level, customers with locations, and next model with customers/locations.
I think products is the outer most junction, because many customers can use the same product in any number of models and locations.
The attached diagram shows where I am now--multiple junction tables, and junctions of junction tables. Now each of these tables has other relationships to nomalize things, but those are not shown.
Is one more level, or nest if you will, the right way to do this?
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Oct 19, 2012
I am working in Access 2003.
I have set up a form that fills out my master table. What I am having an issue with is:
I have 6 different categories that different items fall under.
example: Category 58-Wire Rope and Cable
Category 60-Fasteners
Category 93 - Safety
I need each item that falls under any one of these categories to have a unique identifier starting with the category number.
Example: Safety Glass - - - part number 930001
1.5 inch Cable - - part number 580001
I want to be able to select a category from my drop down box on the form and for the part number to auto fill with the next available number in that sequence.
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Jun 17, 2015
I have an events table and a junction table that has a composite key with two fields; those are the only fields on the junction table and are FKs in my events table.
I have a form that fills in events to my events table and also fills in values to my junction table. The control source is a query of the two tables along with a couple of other reference tables for metadata associations. The form works fine... the first time. My problem is that, after I have entered an event that has my unique composite key for the first time (thereby entering a new record to my junction table), once I go to enter a second event that uses the same key, access tries to enter the record again and throwing a "3164: field cannot be updated" error instead of referencing the already created composite key.
I have the form set the composite values to the selected values on form load. Normally, I would just set the primary key to the primary key values and access would follow my logic, but in this case it always tries to make a new record.
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Sep 13, 2006
Please could you advise me if tables have to be linked in order to perform a query on multiple tables? For example searching for a date and matching records on more than one table at the same time.
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May 29, 2005
I am trying to set up a Real Estate database, and can't get the Relationships to work. I have three tables:
House Listings
Farm Listings
Clients
Clients can have properties in both House and Farm Listings Tables, so I need a Junction Table (or do I need more than one?)
The Primary Key fields of House Listings Table (HouseID) and Farm Listings Table (FarmID), become a composite Primary key in the Junction table. Is this correct?
Both the House Listings Table and the Farm Listings Tables have a field for Client ID. Is this causing me problems, as I can get the Farm and Clients Queries to work, but not any queries with the House Listings.
As this is my first attempt at creating a database with many-to-many relationships, please explain in simple terms what I am doing wrong.
I would appreciate any help.
Thanks
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Apr 13, 2007
I'm working in the petro-chem and industrial service industries now, and am finding there are relationships I haven't had much exposure to in the past.
Can someone please help me with constructing the tables and relationships needed here?
This is something I should probably know, yet I've never created junction tables which must take into account nested data. I have created a relationship which works, but I feel it could be done in a simpler fashion.
By the way, I cannot find Pat Hartman's many-to-many sample db. It is either missing, or the restrictions on word length in Search just aren't letting me find it.
Table: WorkOrder is the primary table I'm working with. I need to store 4
pieces of information for every WorkOrderID, two of which have subs.
Here's a picture of the data I need to collect:
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Apr 24, 2006
I’m having trouble defining Relationships I’m thinking I need a “Junction” Table and I have tried looking at the Orders.mdb but it hasn’t helped (I’m sure I’m just missing something) I just don’t see how it works. If at all possible please don’t just give the info try to help me understand so I can get the answer myself.
Here is what I have:
Far table:
FarNumID (PK) > autonumber
FarNumber > Text “224-10C”
FarTitle> Text
FarParagraph table:
FarParaID (PK) > autonumber
FarNumID > Number
FarParaTitle > Text
FarParaText > Text
AC table:
ACNumID (PK) > autonumber
ACNumber > Text
ACTitle> Text
ACParagraph table:
ACParaID (PK) > autonumber
ACNumID > Number
ACParaTitle > Text
ACParaText > Text
1. Each FarNumber can have only 1 FarTitle 1:1
Each FarNumber can have many FarParaTitles 1:Many
Each FarNumber can have many FarParaText 1:Many
2. Each FarTitle can have many FarParaTitle 1:Many
Each FarTitle can have many FarParaText 1:Many
3. Each FarParaTitle and have only 1 FarparaText 1:1
Thanks so much.
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Dec 8, 2005
All I ever seem to do is sit about trying to figure this out and then give up and ask for help :(
I have three tables.
One for contacts
One for groups (groups like people attending meeting a, b c)
and a junction table as the top two create a many to many relationship.. one person can be part of multiple groups, and a group can have multiple members.
In the contacts table my primary key is an auto number, and is contactsID
I also have some contact details, and a groupID field
In the group table my primary key is GroupID and is an auto number,
it also have group name, and description
in the junction table I have a primary key, then GroupID, and ContactsID which are also set at primary keys and are set with the same values as the same named primary keys in the relavant tables (I beleive this defines them as foreign keys... i hope so anyway!)
I have the relationships set up as a one to may relationship from contacts to junction and groups to junction, contacts linking from ContactID to ContactID in each table, likewise with the Group table.
However, when I try to put everything into a main form for contacts,with a subform for groups, all I am getting is the autonumber... which isn't much good for my end user..... :( How do I solve this?
Thanks anyone that can help.......
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Dec 5, 2007
I'm trying to add records to a junction table based on additional record added to one table via form in the many to many relationship.
Junction table = ClientAssociation
Main table = ClientMain (qry_NewClientNullAssociation identifies new record added)
Many to many table = Associations
I'm trying to do this upon clicking a command button that then opens ClientAssociation based on Client_ID. Then allows user to select mutliple associations (Asoc_ID) for Client_ID.
Here's what I have - I'm new at this...
Private Sub ClickAssociations_Click()
On Error GoTo Err_ClickAssociations_Click
'Open recordset with new client records
Dim db As Database
Set db = CurrentDb
Dim recClient As DAO.Recordset
Dim strClientID As String
Set recClient = db.OpenRecordset("qry_NewClientNullAssociation", dbOpenDynaset)
'Loop through new client ids
Do While Not recClient.EOF
strClientID = ClientMain.Client_ID
Dim recAsoc As DAO.Recordset
Dim strAsocID As String
Set recAsoc = db.OpenRecordset("Association", dbOpenDynaset)
'Loop through asoc ids
Do While Not recAsoc.EOF
strAsocID = Asoc_ID
'Open junction table and update records
Dim recClientAsoc As DAO.Recordset
Set recClientAsoc = db.OpenRecordset("ClientAssociation", dbOpenDynaset)
With recClientAsoc
.AddNew
!Client_ID = strClientID
!Asoc_ID = strAsocID
!CheckBox = False
.Update
End With
recAsoc.MoveNext
Loop
recClient.MoveNext
Loop
Dim stDocName As String
Dim stLinkCriteria As String
stDocName = "frm_Associations2"
stLinkCriteria = "[Client_ID]=" & Me![Client_ID]
DoCmd.OpenForm stDocName, , , stLinkCriteria
Exit_ClickAssociations_Click:
Exit Sub
Err_ClickAssociations_Click:
MsgBox Err.Description
Resume Exit_ClickAssociations_Click
End Sub
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Dec 18, 2007
Hello all,
I just wanted to run this by some experts before I go mucking around in my db. Basically, I am creating a data entry form to populate with information about car parts, and the vehicles they apply to. This is what I am working with:
tblParts tblModelsParts tblModels
PartID ModelPartID ModelID
PartNumber PartID ModelNameID
PartDesc ModelID ModelYearID
I am trying to build a form that will allow me to enter new part numbers and descriptions into the table, and then have the user select (through a listbox?) all the vehicles the parts apply to. Is there a way to populate the junction table with each combination of partID and ModelID automatically? NOTE: tblModels is already populated with data.
I am assuming there would be a way to do this... A query of the junction table (and tblModels?) as the recordsource for the form, and then a subform with the tblParts as its recordsource?
I would have posted this in the massive thread I have going already... but I thought it might be nice to give Craig and Adam a break from helping me :o
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