Error early on non globally unique node IDs (#1311)

Alleviates #1262

This code will need to be removed again when that is fixed.

core/src/model.jl

@@ -85,6 +85,13 @@ function Model(config::Config)::Model
         state = load_structvector(db, config, BasinStateV1)
         n = length(get_ids(db, "Basin"))
 
+        sql = "SELECT node_id FROM Node ORDER BY node_id"
+        node_id = only(execute(columntable, db, sql))
+        if !allunique(node_id)
+            error(
+                "Node IDs need to be globally unique until https://github.com/Deltares/Ribasim/issues/1262 is fixed.",
+            )
+        end
     finally
         # always close the database, also in case of an error
         close(db)