Hi Andreas,
in case of a relation 1:many you can use the /relation_aggregate/
function, something like:
/
relation_aggregate('test_n_318_fk_test1_7993_id','concatenate',//to_string(@id),',')/
where the first parameter is the ID of the relation.
Hope this helps...
Stefan
Am 29.11.2022 um 15:05 schrieb Andreas Neumann via QGIS-Developer:
Hi,
I am looking for a way to find out the internal id of a related layer
with a QGIS expression.
@id and $id only work directly on the feature of the source layer, but
not on related layers.
attributes(
get_feature(
'Other Related Layer',
't_id',
fkey_value
)
)
doesn't contain the internal id of the other layer ...
Any ideas how to get access to internal ids of other layers?
Thank you and greetings,
Andreas
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