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On Thu, 06 Jun 2013 08:21:33 -0400, Marion & Noel Lodge <> wrote:

Hi Dan,

My form displays a Church Membership Roll -

- The Families Table contains the family's Surname, Address, Street Map
Reference, Date Loaded, Date Last Updated etc.
- The Roll Table has a separate line for each family member.  It includes
First Name, Title, Date of Birth, Membership Status, Occupation etc.

On the form the family fields are displayed in Columnar format with labels
left.  The Roll fields are in a Data sheet.

When I call up a family I want all the family members to automatically
appear, and I was hoping to do that using Main form / Sub Form linking.

At the moment, by removing the linking, I can get all of the Roll table
rows appearing in the Data sheet, so I think I'll write a macro to filter
the rows to include only those associated with the currently displayed
family. I think this would work just as well as the linking mechanism, but
can you think of a better solution?


Noel Lodge


I am not familiar with the forms but am familiar relational databases.

Does the family table have a key such as id which is probably an integer?

Does the roll table include idFam for each family member?


family table

id      LastName        (other relevant fields)
1       Jones
2       Smith

roll table
id      idFam   FirstName       (other relevant fields)
1       1       Bill
2       1       Jane
3       2       Art
4       2       Sue
5       2       Ann

A SQL query to populate the form with the family members would look something like this

SELECT  LastName, FirstName, other relevant fields from either table
FROM    family as f, roll as r
WHERE = idFam

The select part choses the fields to be included. The from part states which tables are involved. Note the as "x" aliases are used to clarify which table. In this example "id" appears in two tables so the query needs to know which table to use for id. Thus using the alias "f" refers to the family table, without alias does the same. The where part says what should be used to link the two tables.

The reason id is an arbitrary number not the last name is to provide a unique key field (id) for each entry.

On 6 June 2013 20:57, Dan Lewis <> wrote:

It seems that this has been a problem since 2010 with
Base, so it is likely a problem with LibreOffice Base as well.
     This link describes how one person solved it.


     There is something more that I would like to know:
 1) What purposes do this form and subform serve? (Specifically, why use
the parameter?)
2) How does the design of the form accomplish these purposes?


On 06/05/2013 09:40 PM, Marion & Noel Lodge wrote:

Hi Dan,

Thank you for your prompt and detailed reply.

I'm using the H2 database and I suspect that was the vital piece of
information that I failed to mention in my first post. Sorry about that.

I originally linked the two tables using the Wizard. Then later I used the Form properties dialog to un-link and then relink them, but to no avail.

When I got your reply, I created a new test Form going through all the
steps you laid out, but I got the same error message as before.

I then went to Queries | 'Create Query in SQL view' and ran this query -

WHERE ("FamilyKey" = :link_from_FamilyID)

With the SQL button on, (Run SQL command directly), I got the same error.
With the button off I got a prompt to manually enter the value of
':link_from_FamilyID'.  Entering a 1 produced the same error as before.

I finally tried the query in a native, (HSQL not H2) database, (I changed the table name to suit the other database), and when I manually entered a
suitable integer it worked!

So my conclusion is that setting Table links in a Base Form doesn't work
when using H2 as the database.  Is that right?

Thanks again for all your help - much appreciated.

Noel Lodge

On 5 June 2013 21:51, Dan Lewis <> wrote:

 Onn 06/05/2013 02:29 AM, Marion & Noel Lodge wrote:

I have a Form with families info in the Main Form and family members
in a Sub Form. The Tables and relevant fields are -
Main Form (Families)
<Info fields follow>

Sub Form (Roll)
RollID         BIGINT     IDENTITY
FamilyKey  BIGINT
<Info fields follow>

I have linked the forms using fields FamilyID and FamilyKey - a one to
link.  However I get the error -
The data content could not be loaded.
SQL Statement:
WHERE ("FamilyKey" = :[*]link_from_FamilyID) [42001-139]

The problem seems to be the 'link_from_FamilyID' phrase.  I Googled
and all it says is that it is an invalid SQL Statement, but I don't know
what is wrong.  Even if I did, the SQL statement is generated by the
Wizard!  Is there a way of manually over riding the Wizard?  Failing
I'll need to write a macro to filter the Roll records to achieve what I
want to happen.  But I shouldn't need to do this.  In another
have previously got this sort of linking to work.

Can anybody see what I am doing wrong here?

I'm running LO version and Windows 7.


Noel Lodge

Needed information: How did you link these two tables? (Specific
steps please.) Are you using Base as the front end to another database?
Where did Base get the name "LUCROLLS"? (I know that "PUBLIC" is the
and 'Roll" is the table name.) Is "LUCROLLS" the name of the database
I created a database with two tables: Families and Roll. Families
given the primary key, FamilyID (BIGINT). Roll was given two fields:
(primary key, BIGINT), and FamilyKey (BIGINT). Using the Form Wizard, I
created a form with Families as the main form and Roll as the subform.
2: (Setup sub form) Clicked "Add subform" box. Clicked Next. Step 3: (Add
subform fields) Selected "Table:Roll" from the Tables or queries
list. Clicked the double right arrow to move all the fields from the
Roll, to the "Fields in form" list. Clicked Next. Step 4: (Get joined
fields) Select FamilyKey from the "First joined subform field" drop-down list. Select FamilyID from the "First joined main form field" drop-down list. Click Next. I then went through the rest of the steps of the Form
      Possible way to correct the situation: Edit the form.
Add the Form Controls toolbar. (View > Toolbars > Form Controls) The
fourth icon from the left is the Form tool (icon). But first control
the FamilyKey field. Then click the Form tool. (The Form properties
opens.) Click the Data tab. Click the ellipse (...) for "Link master
fields". (The "Linked fields" dialog opens.) Select FamilyKey from the
Roll drop-down list. Select FamilyID from the Families drop-down list.
Click OK. Close the Form Properties dialog. Save the Form. Save the


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