Tables :: How To Make Constraint When Putting Records Into Access Table
Sep 29, 2014
I am developing a simple database for students to register courses using Microsoft Access 2010. I have 4 tables: Student, Register, Course, and Section (1 Course can have many Sections).
Then, there is a criteria that a student can only take up to 6 courses. Hence, may I know that where and how can I include this constraint? I believe that it should be in the Macro (Before Change) of the table Register...
My relationship is: Student -> Register <- Section <- Course
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Apr 6, 2008
Can anybody help me understand why I get the error
"Syntax error in CONSTRAINT clause"?
I get it in Access 2003 and Access 2007.
Both are clean installs with no add-ins
Running this code in VBA, or pasting the SQL directly in a query results in the same error.
Sub test()
sTableName = "Test"
sSQL = "CREATE TABLE " & sTableName & "_Config (" _
& "[idConfig] Int Primary Key," _
& "[Config] Memo," _
& "[Instrument] int," _
& "[Serial_No] Text(25)," _
& "[Firmware] int," _
& "[Orientation] int," _
& "[Sensors] int," _
& "[Sensor_Size] float," _
& "[Sensor_1_Distance] float)"
DoCmd.RunSQL sSQL
sSQL = "CREATE TABLE " & sTableName & "_Leader (" _
& "[idLeader] Int Primary Key," _
& "[idGroup] int," _
& "[idFile] int," _
& "[idConfig] int," _
& "[DateTime] DateTime," _
& "[Heading] float, [Pitch] float, [Roll] float," _
& "[Pressure] float, [Depth_BSL] float, [Height_ASB] float,"
_
& "[Min_Valid_Sensor] int, [Max_Valid_Sensor] int," _
& "[ASM_Bed_Level] float," _
& "CONSTRAINT [FK_Test_Leader_idConfig] FOREIGN KEY ([idConfig]) REFERENCES [Test_Config] ([idConfig]) ON DELETE CASCADE ON UPDATE CASCADE" _
& ")"
DoCmd.RunSQL sSQL
End Sub
The first table is created just fine.
And if I leave the constraint clause out, the second table is created also.
If I try to run it as an SQL query right in Access, after the error is delivered, it highlights the word DELETE, and if I reverse the update and delete portions, it highlights the word UPDATE.
I have looked up the clause in Access help and even using their example, i get the same error.
Any help will surely be appreciated!
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May 11, 2013
I have two tables with compatible data. Table 1 has 23 records and table 2 has 5 records. I am trying to make a "make Table". But instead of a table with a combined 28 results, I get 115.
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Sep 17, 2013
I have multiple tables that are linked to excel. I am creating a product selection tool to make it easy to find the products contained all these linked tables. They are necessary as they contain pricing data and information necessary to be kept in excel which is regularly updated.
Is there a way to create one table containing data from all these linked tables? I tried using an append query but realise that when the linked tables are updated the table containing all the data wont be?
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Dec 2, 2013
Using an example:I have three tables; tbl_weight , tbl_height , tbl_bmi...How do I make tbl_bmi automatically use the weight and height values (height/ weight) to determine the tbl_bmi values? Is there a way to store code behind the tables as if I was in MS excel?
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Feb 25, 2005
In Oracle, you can set up table constraints which constrain data accross mutliple attributes/fields. Can you do this in Access?
For example. I have:
OrderLine(orderNum,orderLineNum,[productNum],date)
I dont want to allow for the same product to be put on one order twice. Therefore, (orderNum,productNum) must be unique, but productNum is not a part of the primary key so it can be repeated in every row for all the database cares. :P
How can I set this up.
In Oracle I would do something like:
CONSTRAINT chk_prod CHECK UNIQUE (orderNum, productNum)
Thanks for any help.
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Sep 9, 2005
Hi,
I have developed a small hotel booking system which inserts records into a reservations table. The table looks like this:
[ReservationNr][StartDate][EndDate][RoomNr]
I am now trying to add a constraint which prevents a room from beeing booked twice on the same day, hence the time period defined by StartDate and EndDate in a record must not overlap with another record.
Is Access capable of adding such a constraint?
It was easy to add a constraint that prevents a booking where the StartDate is before the EndDate, but this one needs to reference already existing records.
Any help would be much appreciated.
Thanks
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Jun 26, 2005
Hi everybody .I created a bounded form that allows user to enter the following fields information
to the sql server db that is linked to access .The fields are: Projectno, taskcode, taskdiscription
and total hours worked.
I want for example when a user tries to enter total hours work for a user (Hours in hours worked table) and
if he did not already enter wages of the employee for that particular project (amount in hourly wages table)
that user get a massage prompt and ask user to enter amount in to hourly wages table first. Possibly opening that form.
I be happy if some one help me add this feature to my form. Thanks
http://i5.photobucket.com/albums/y180/method007/constraint.jpg (table reletionships pic)
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Aug 17, 2005
Hi all. I want to check for not null value constraint for all tables in database . I tried the following but when i run it i get the following error:
Compile error:
Invalid Next control variable reference
I be happy if some one one help me fix this error.if i remove the bold lines the program workes well but it does not put not null for table fileds that requries value.
picture of the output without the bold part
http://i5.photobucket.com/albums/y1...007/notnull.jpg
Code:Option Compare Database''This module displays field name and type in a massage boxFunction ShowFields(pTable As String) As StringDim db As DatabaseDim rs As RecordsetDim I As Integer''Dim j As IntegerDim n As Integer''Dim NL As StringDim strHold As String, ST As String''Dim x As Variant''NL = Chr(13) & Chr(10) ' Define newline.Set db = CurrentDbSet rs = db.OpenRecordset(pTable)n = rs.Fields.CountReDim x(n - 1, 1) As String'''ST = "Create Table " & pTable & vbCrLf''adding Create table and table name to statementST = "Create Table " & pTable & vbCrLf & "("For I = 0 To (n - 1)For Each fld In tbl.Fields ST = ST & rs.Fields(I).Name & " " & FieldType(rs.Fields(I).Type) & "," & vbCrLf If fld.Required = True Then ST = ST & " NOT NULL" & " " Else ST = ST End IfNext Irs.Closedb.CloseSet db = NothingShowFields = ST '' returns the fields name to main functionEnd Function
on click even code
Code: For Each T In db.TableDefs '''Skip the system tables If Left(T.Name, 4) <> "MSys" Then ''' this line determines the primary key of the table ''' by calling GetPk function from module pk = Left(GetPK(T, db), InStr(1, GetPK(T, db), "<-") - 1) cont = cont & ShowFields(T.Name) & vbCrLf & " primary key " & "(" & pk & ")" & vbCrLf & ")" & vbCrLf End If Next T ''' This line of code post the generated table statment to a massage box MsgBox cont
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Jul 11, 2013
We have a database which has a table with 2 fields - here is an example of the data:
Order File Path
240971 cclapps1scannerWorks Orders 2008Works Orders 2008ITL1ITL1TMSPC11.GFD
We basically need to change the file path to read cclapps3 instead of cclapps1 in every record.
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May 13, 2015
I have what is probably a stupid question but I've been struggling with this one for a while. I have an ordering database which has an Orders table (containing Order ID, Date, Supplier etc) and an Order Line table within which I have a combo box for Product name, supplier, price, VAT rate, Line price etc. At the moment, I have the order line table as a subform within the Order form (run from the Orders table). The problem I'm having is the subtotal and total fields. At the moment these are in the Order Line table as I cannot figure out how to get these in the Orders table. In summary, can I make a calculated field in one table that calculates values from another table (linked by Order ID)?
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Oct 11, 2006
Hi
I have several small tables that I want to make combine into a big table.
How do I do this - is the only way by using a query?
Maria
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Apr 1, 2014
I am doing an assignment for uni and need to be able to autofill a textbox with the price of a service based on whether a checkbox, detailing whether the invoice has been paid, is ticked. I found the following formula which works: =IIf([Invoicepaid]=True,[ServPrice],0).
I put this into the control source box on my form but the only problem im having is that the price of the service is not being updated into the actual invoice table.
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Jan 2, 2014
I have a complex series of calculations to perform, and I have found the best way to achieve my end is to create new tables by the Make Table queries.
The trouble is I have many tables to create and the downstream tables refer to the previously created tables; I have recently discovered that queries perform much quicker if they are indexed (duplicates OK). I've looked at my tables created by the MakeTable queries, and they all seem not to be indexed.
How do I make them indexed automatically?
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Oct 9, 2013
All using access 2010. I have a multiuser database that I feel would benefit from splitting into a backend with multiple user frontends. My problem is that there are tables from make table queries processed every two weeks that all users need access to. As far as I know; you can not put a table in the backend that you will delete and remake or a temporary table and link to it in the front end. Is there any other way I would be able to split the database and have temporary tables linked from backend to frontend that I am not aware of? Is there another way to creating temporary tables and tables from make queries? This database has 9 users and counting and really needs to be split. r
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Nov 28, 2007
Hello people,
I have for some time now been fooling around with a database to keep track of several clinical trials
Basicallly I have made 4 tables..2 which defines the project ( Project and visist), 1 that populates the projects ( patients) and 1 that bind the patients visits to specific dates ( appointment)
The trouble is that im Lazy :D and therfore dont want to enter the appointment data for all patients one at a time each time we get a new guniea pig since all thats diffferent is the dates he/she has to show up.
Im hoping for some way to fill up my appointment table based on patientID and projectID alone.
SO this is my 4 tables... ( some unimportant fields left out)
Project
ProjectID (PK)
ProjectName
ProjectDescription
Patients
ProjectID(FK)
PatientID(PK)
PatientName
patientScrnr
Visits
ProjectID (FK)
VisitID(FK)
VisitName
VisitPrice
DaysToNextVisit ( integer)
Appointments
VisitID(FK)
PatientID(FK)
AppointmentDate
AppointmentID ( PK)
The idea is to create a project and then add a set amount of visits to the project ( days when they have to come and get a blood sample taken)
All patients involved in the project is likewise added in the Patients table and joined to a project.
Since the patients all have to come to a fixed amount of visits ( determined by the project) I was thinking I could make a form where I pick a patient from a combobox
(select projectID,PatientID,PatientName) and then automatically generate a record for each visit in my Visit table where Visits.ProjectID = cboPickPatient.ProjectID
and show them in a subform so I can enter the date they have to come. I hope that makes sense. ( preferably I would like to add the date also by just entering the first Visit date and the using the DaysToNextVisit to make the other visit dates or each patient, but thats a whole other problem :o )
My instinct tells me I have to do some sort of loop code but I havent figured out the details.
Can any of you guys lead me in the right direction before I loose all my hair in frustation??
This seems to me to be a pretty simple problem-making a recordset based on a projectID and the visits involved in that project but im just out of ideas:confused:
Kind Regards,
Brian Bj
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Jan 14, 2014
I am looking to make a table which adds a sequence number to my records.
Example data would look like this
Acc no Date
1234535 01/01/2013
1234535 05/01/2013
1234535 11/01/2013
9876543 02/01/2013
9876543 22/02/2013
9876543 01/03/2013
I want it to add a deq based on the account no then date in sequence oldest to newest.
Acc no Date Seq
1234535 01/01/2013 1
1234535 05/01/2013 2
1234535 11/01/2013 3
9876543 02/01/2013 1
9876543 22/02/2013 2
9876543 01/03/2013 3
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Apr 17, 2013
How do I delete duplicated records without having to make a new table? I would like the records deleted from the original table.
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Sep 11, 2014
I have a replica at work, 1 copy on the network, 1 local.. I need to add a column to the main table, getting "Operation is not supported for this type of object".... I have users that use the database but was given a change to the form/report which requires a column addition. What is the simplest way to get around this??? I'm trying not to get into major problems.
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Oct 18, 2012
How to I combine 2 tables with the same primary key to make one table? I have seen several thigns but none have worked. I seen inner and outer joins. All 4 of my tables have the same primary key. I just want to combine all the tables to make one table. I have a form with subforms but if I can combine all the tables and work off one rather then 4 I will be happier. Every week to 2 weeks I upload new data from excel. How would I after I add the new data combine all tables to one super table?
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Nov 11, 2013
No matter how much I maximize or minimize Access (2010) my tables fill the entire screen. This happened once before but I don't recall the fix. It was something very simple. How to make the table not fill the entire screen?
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Feb 25, 2015
I have records using a select query that I am sending to a make table. I would like to have those records excluded from being used again for 180 days, at which point they can be used again. Essentially, I have an ID and an email address which gets stored in the Make Table. I would need to ensure that if we send an email out in Week 1, we do not send an email again for another 180 days if there is activity from that same ID. On day 181, the ID/email address can then be resent.
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Aug 29, 2006
Hi,
I am extracting data from linked db2 table using access make table query. First I create a select query and can view the linked db2 data, but when I change to a make table query I get an error message, "invalid argument", when I run the make table query. There is no selection critera specified. Has anyone had this happen? and Do you know a solution?
Thanks for your support
GinnyP
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Nov 14, 2012
I have a table that I imported from another database. I used import Access - Link to the table source by creating a linked table. - then downloaded in my database.
I want to use the linked table to create relationships and forms but do not want to even accidently edit it. The table gets updated in the database on a weekly bases and I am hoping it gets updated automatically in my database as well. does it automatically get updated or do i have to set up something?
Also, I want to protect the data in that particular table and either password protect it or make it read only. Can I do that? If so, how?
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Sep 17, 2013
I am trying to make a crosstab query to filter my records from my table.
Here is the scenario.
I want to make a query that will return me my Rep ID, Rep Name, his Bonus and his GV-Q (another value) based on every month.
Now I make a crosstab query and here is the syntax.
Code:
TRANSFORM First([TBL Qualification Data India].[Bonus Rank]) AS [FirstOfBonus Rank]
SELECT [TBL Qualification Data India].[Rep #], [TBL Qualification Data India].[Rep Name]
FROM [TBL Qualification Data India]
GROUP BY [TBL Qualification Data India].[Rep #], [TBL Qualification Data India].[Rep Name]
PIVOT [TBL Qualification Data India].Period;
This resulted in a column for Rep Number, one column for Rep Name and columns for all the period of Bonus I am going to have., so there are basically 9 columns for this till this month for each month and bonus value shows as values for all these month (period) columns.
Now in this same syntax, I want to have my Rep GV-Q value as well as his bonus to show in the same query, I read and came to know that it's not possible to directly have two values or two column headings in a crosstab query, I must have to make a new crosstab query and then use a normal select query to display records from these two crosstab queries, so I went ahead and made a new similar but with one value field changed crosstab query and here is the syntax for that.
Code:
TRANSFORM First([TBL Qualification Data India].[GV-Q]) AS [FirstOfGV-Q]
SELECT [TBL Qualification Data India].[Rep #], [TBL Qualification Data India].[Rep Name]
FROM [TBL Qualification Data India]
GROUP BY [TBL Qualification Data India].[Rep #], [TBL Qualification Data India].[Rep Name]
PIVOT [TBL Qualification Data India].Period;
Now after this how to make a select query to show the data from these two queries.
I can make a normal query based on these two crosstab queries and manually add all fields and then I would have my result but then after every month I have to manually enter these two extra month details from both crosstab queries to my final query and that's not what I want.
Is there any method to do this by gathering data from these two queries into one and achieve the result I want or if there is any other approach to tackle this.
To explain my database and my need for output, I am attaching few pics to make things easier if I made some mistakes in explaining my problem. It's included in attached zip since I am not able to post images or links.
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Mar 20, 2006
i have started to try putting the concrete records i keep on excel into microsoft acces. for each record, i need to make note of the vehicle registration numbers. what is the best way of doing this? if it is possible
Thanks
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