FindLayer — Returns a topology.layer record by different means.
topology.layer FindLayer(topogeometry tg);
topology.layer FindLayer(regclass layer_table, name feature_column);
topology.layer FindLayer(name schema_name, name table_name, name feature_column);
topology.layer FindLayer(integer topology_id, integer layer_id);
Takes a layer identifier or the identifier of a topology-related object and returns a topology.layer record.
Availability: 3.2.0
SELECT layer_id(FindLayer('features.land_parcels', 'feature'));
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