Hello,
I'm using Allen Brownes very helpful cascade-to-null relations (http://allenbrowne.com/ser-64.html) code in my database project, but there comes problems whit a foreign key and null values, cause foreign key shouldn't be null. Is there anyone else using this method with relational tables? What I should do to make this work?
All hints and tips are welcome and approciated, thanks on advantage. =)
- IpeXeuS
I want to use Cascade Delete on a main table that has relationships with a few tables. The type of these relationships are weak and the delete will work perfectly I think. But, I am concerned about how I can only delete the FK from one of the tables because it contains a non-prime FK.
For example: Customer buys House. So Customer PK is in House as FK.
If I delete customer, I don't want house deleted. Is there anyway that is native to access in how I can only delete the FK from tblHouse without deleting the house record.
Hi, all... :)
I need to create cascade relationship on fly.
I've succeeded to create the relationship by:
ALTER TABLE tName ADD CONSTRAINT fk_id FOREIGN KEY(ID) REFERENCES tPrimary(ID)
and even succeeded to check the referential integrity by:
ALTER TABLE tName ADD CONSTRAINT fk_id FOREIGN KEY(ID) REFERENCES tPrimary(ID) CASCADE
The real problem comes when i am trying to enforce the cascades. I do not find any expression doing it.
the standarts of sql: on update cascade
or
of sql server: on update cascade go
just don't work in access :(
Thankful ahead
Hello,
I followed the Microsoft guide detailing how to set up two cascading combo boxes. I would like to add a third box to the cascade. I have tried making some assumptions based on the code in the example but I can't get it to work.
I have three queries set up; qryBusiness, qryBusinessUnit and qryLocation.
I am using one form; frmToolInfo.
I have three combo set up; cboBusiness, cboBusinessUnit and cboLocation.
I amended my code to the following:
Private Sub cboBusiness_AfterUpdate ()
Me!cboBusinessUnit.Requery
Me!cboBusinessUnit.SetFocus
End Sub
Private Sub cboBusinessUnit_AfterUpdate ()
Me!cboLocation.Requery
Me!cboLocation.SetFocus
End Sub
Private Sub Form Current ()
Me!cboBusinessUnit.Requery
Me!cboLocation.Requery
End Sub
I want to cascade down from Business, to Business Unit to Location.
Can anyone advise me as to what I've done wrong here.
Thanks.
How do I create Related Cascade Combo boxes by CD Group and Name of CD
To only display the records from NAme of CD related to the CD Group
Or to to a ABC and click on Artist and then click on the list with Name of CD
Someone else is wonderinf a friend of mine in Acess you can create a inventory Database to display records related like Name of Furniture Brand, Item and Search ny Last Name to see if they bought that Item
Hello,
I have a question on cascade combos.
I have a form named Welcome and would like to add two cascade combo boxes.
The first combo, named cbolist get's its data from a table named QUERIES which has three fields:
ID
QUERYNAME
QUERYDESCRIPTION
cbolist displays the records contained in the QUERYDESCRIPTION field which are basically the name of other tables of my database with different records (obviously).
I would like that after selecting a record in the cbolist, the second combo, which I will call cboresult, will populate with all the records of that specific table selected in the cbolist.
Any help with the correct code?
Thanks.
Hello Friends,
I need some help to crete a query that will delete data in multiple tables.
My database has 5 tables. I store data in a main table and then append the ID and SSN to the other 4 tables.
The main table has also a purge date field that I will use to delete old records.
I use a form with a textbox where I type the starting date from which remove these records.
Is there a way or example I can see on how to remove all records at the same time. I have heard of cascade delete queries but really don't know how to use them.
My idea was to remove from the maintable all records with a date older than the date in txtbox and at the same time remove all records with the same ssn in all the other tables.
Thank you.
I need help relating 2 Cascade combo boxes
I need the coding I see the example online at
http://www.fontstuff.com/access/acctut10.htm
But I need the Coding it explains good how it works
CD Group
CD Name
Displays CD Group related to the fields in CD Name
Thanks,
Mike Va nDer STad
I have 2 tables cD Group and Cd Name
2 forms CD Group and Name
I want to populate the fields in the cd Name form
When someone selects CD Group field
Mormon Tabernacle Chior
CD Name relates back only cd names to the cd group
God Bless America
Here is the coding
Row Source CD Group
SELECT DISTINCT [CD Group with Name].[CD Group] FROM [CD Group with Name] ORDER BY [CD Group with Name].[CD Group];
Event Procedure After Update
CD Names
SELECT [CD Group with Name].[CD Name] FROM [CD Group with Name] WHERE ((([CD Group with Name].[CD Group])=Forms!frmCDs!cboGroup.value));
SQL Query
Field CD NAme
Table CD Group with Name
Field CD Group
Table CD Group with Name
[Forms]![frmCDs]![cboGroup].[value]
Private Sub Command8_Click()
On Error GoTo Err_Command8_Click
Dim stDocName As String
Dim stLinkCriteria As String
stDocName = "Track Table Test"
DoCmd.OpenForm stDocName, , , stLinkCriteria
Exit_Command8_Click:
Exit Sub
Err_Command8_Click:
MsgBox Err.Description
Resume Exit_Command8_Click
End Sub
Private Sub fldCDGroups_AfterUpdate()
End Sub
Private Sub fldCDName_AfterUpdate()
End Sub
Thanks,
for any help
mikevds@optonline.net
I'm trying to filter a combo based on the selection in another combo.The twist is that I need the row source of both combos to include an "*", "(All)" selection, as I am using these combos to filter a listbox. When I add the Union query with "*", "(All)", the row source in the 2nd combo is ignoring the where clause.
After making a selection in the Comp combo, the Emp combo should be filtered. It works with no Union in the row source, but does not work with the Union in the row source.
Is this scenario considered bad design form? (see attached image)
I'll never delete a Customer or Site for whom a a Job exists. I need historical data to remain intact. I'll just mark a Customer or Site as [InActive] so they can't be used, when appropriate.
If the relationships are considered good form, then what is considered good form when deciding upon which relationships to set to Cascade Update? Do I even need to update autonumber foreign keys?
On upsizing this database, SQL complains that this arrangement is a cyclic update and won't create the relationship unless I tell it to use Triggers. This leads me to question whether I'm correctly using Cascade Updates in my Access db's.
Thank you.
I need directions on Cascade Combo Box, So when I select:
CD Group
Displays only the CD's in that Group that are related to that Name
So what fields would I have to set up for CD Group and CD NAme with that Table.
Someone emailed me an article on Cascade combo boxes what fields so I need for the coding.......
I've done this tons of times, so I don't understand what's happening... The title says it all: when I update the ID of one record of the main table, the referenced records on related tables won't update even though they have a relationship between them with the option "Cascade update" clicked.
In the attached database, the main table "Expedientes" is related to table "Actuaciones".
I want to make a form where i have 4 comboboxes in a cscade combobox thing.
I already made 4 tables with info.
- My first table contains devices:
- ApparaatID (Primairy key)
- Apparaat(with 4 entries)
- My second table contains if it is hardware or software:
- TypeID (Primairy key)
- ApparaatID
- Type (where I entered hardware and software in 2 different entries)
- The thirt table contains operating systems:
- OSID (Primairy key)
- ApparaatID
- TypeID
- OS_versie (where I entered all the OS I want to enter)
Now I made a form I called problemen with 4 comboboxes.
- cboApparaat
- cboType
- cboOS
- cboProbleem
1) What I want is that when you select device 1 and 4 that cboType can select both hardware and software but with device 2 and 3 you can only select software.
2) If you have selected software is cboType I want you to be able to select 1 of the 11 OS I have pre-entered in the table.
3) That you get specific problems with the previous made choices. For example if you select Hardware in cboType, thta you only get problems with hardware to select from and the same with software and OS.
4) I want a textbox, that will contain the solution of the problem you selected and that if there and several solutions that you get all of them at once.
What I'm trying to do is making Cascade update and delete between two tables. For example in my case I have Field called Full name in table1 and I want the same field in table2 that will update when something is added in table1 and vice versa. I have tried relationship but I got an error that those fields does not have any unique value.
View 3 Replies View RelatedHi,
I have a database with a couple of tables. The primary table has a primary key called "StaffNo". I checked the relationships between the primary table and each related table, if I have ticked on the boxes for referential integrity, cascade updates. All done. If I now create a query, which selects the primary table and one related table and enter a new StaffNo, I would expect to see the new StaffNo not only in the primary table but also in the related one. But there is nothing. Do I expect wrong? Have I missed sth.? I read a few posts in this and other forums reg. referential integrity, but I have no clue, what's wrong. :confused:
Any quick help is much appreciated.
Thanks :)
I'm trying to Identify a particular entry in my table for editing via combo boxes. The same serial number will come in multiple times but a different job number each time it comes in. To identify a record for editing I need the user to identify the serial number in combo1 and then the job # in combo2 (cascaded combo boxes).
The issue I'm running into is that combo1 has dozens of serial number duplicates (combo2 is acting as it should). When I change some settings around I'm able to get combo1 to eliminate duplicates but now combo2 only shows 1 job # when there should be dozens for that serial #. I need all like serial numbers to show their job # in combo2 and I have not had any luck surfing around the net/forums/experimenting.
I'm pretty sure I have to use a Junction Table but I haven't messed with that and I'm not 100% sure that's the best/only way to do it.
(named: Invalid Field Definition - Unable to set up cascade update but I have done what the moderator advised and have not been able to fix a very similar problem.
I have planned a database and must adhere to the plan or change it and basically I initially said that I would like to enforce referential integrity to synchronise my tables and I would also like to cascade update and delete to save input time because changes will be automated between table (where fields are connected.).
I have attached a plan I did if that makes the purpose of my database clearer.I have attached my database and have established the relationships* without referential integrity enforced I would like between my tables but don't know how to make them one-to-many relationships nor can I enable cascade update or cascade delete or enforce referential integrity.
I am new to databases (and to this forum) and have been promised by my line manager that I won't have to specialise, I don't think I have created the relationships but they are supposed to be between Vehicle ID and Hire Number, and Customer ID and Hire Number.
I use access 2013.
1) How to auto fill in a text box if you select a value from the last of 4 cascade comboboxes.
I have 4 comboboxes where
1 = Apparaat - cboApparaat
2 = Type - cboType
3 = OS - cboOS
4 = Probleem - cboProbleem
With all 4 comboboxes I have the vba code Me.cbo[name combobox].Requery
If I select the last combobox, cboProbeem. I want the textbox underneath to automaticly fill in the solution of that problem. I already tried to use the following vba code
Me.Oplossing = Me.cboProbleem.Column(5)
But it does not work.
2) I want to make a form for customers, where I can fill in customer info, device info and date when there contract started. Now I want to use SUM to fill in the end date of there contract.
I do not understand what is happening here. I have foll0wing line in a calculated query field:
m: Switch([EmpID]<5,1) ' run Query 18 in attached example, A2007/2010
this produces 1 for all EmpID<5 and Null for all other EmpID's. All as expected.
But if I do this:
m: Switch([EmpID]<5,1,[EmpID]>=5,Null) ' run Query 19 in attached example
then the entire column is set to Null
It might be an easy one but I just wasted the past hour deciphering through my code in order to solve the run-time error '94' that I'm getting when trying to execute the following code:
Code:
Private Sub cmdUpdateDates_Click()
'###################################
'This sub aims at combining the timesheet date and the start and end time into the fields [Start Time] and [End Time].
'###################################
Dim intCounter As Integer
intCounter = 0
Dim rs As ADODB.Recordset
[Code] ....
Hello all,
A bit of a weird one, I've got a query and the criteria for showing records is that one particular field is null. However the query is showing records with the values in the field chosen for the Is Null.
Not sure why this is happening, has anyone come across this problem before?
Thanks.
Ive got problem with defining foreign key
i explain what table ive and what i want
between my Student ,Session there is many to many relation that student session connect them together
student: Format student session: Format
Student ID Autonumber Student ID Autonumber
student name Session ID Autonumber
student address
student dob.....
....
Session: format
Session ID Autonumber
dance days
dance time
no of student
the student id is primery key and session id is primery key ,student session is compound key of this 2 but it wont work it keep saying u can only have one auto number in one table #
what should i do ?
Hi all,
my question is what is a foreign key and how is it used ?
Hey all, i'm new here! I've spent hours upon hours trying to solve this problem, but it's got me nowhere, so I think it's time to ask for help! I'm not exactly an Access beginner (I generally know what i'm doing) but this has me stumped!
Ok, basically my DB has several tables.
Staff (main table)
Qualifications
Institutions
The problem is - i'm trying to set it up so the fields "qualificationName" and "institutionName" in the staff table extract the data from the fields with the same names in the qualifications/institutions tables.
I've tried linking the fields together as foreign keys, but when I go to set referential integrity, I get the error "No unique index found for the referenced field of the primary table"
staffID in each table is linked properly, but that's as far as it will let me go!
Any help would be really appreciated!
hi
i am new to access 2003 ,i would like to know how do i tell access which attribute is foreign key of another primery key ,for example
if i have two table
1.student
2.order
i want to have student id as foriegn key in order how would i do that ?
thanks