>In one case I use a dataenvironment.
>
>e.g. I have 2 cursors named 'company' and named 'scale'
>
>I use Relations between the cursors but it only works when I have set the property 'filter' from 'scale' to '=scale.icomp_nr = company.inr'
>
>Having set the filter property my grid just shows the 'scale' - data of the selected company.
>
>Can I do anything else? Just with relations it shows the scales of every company.

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Actually you can do many things :) 'Set filter' despite Rushmore optimization is still slooowwww. A simple one that doesn't even need relations in DE is as follows. Assuming you use customer and orders from testdata (tables dropped in DE but relation is deleted to demonstrate you don't need it - no order is set for orders table though might be one starting with cust_id) :

Put fields from customer.
Put fields from orders as a grid.
*Grid properties
ChildOrder = 'cust_id'
LinkMaster = 'customer'
RelationalExpression = 'cust_id'

That's all :)
Cetin