     geometry          - the type ("Polygon") and polygon coordinates
     properties        - the attributes for this station from the extra queries
 ';
+
+create index on cimapplication.geojson_stations (transformer);
 
 create table if not exists cimapplication.key_value (
     simulation text,

    properties        - the attributes for this element from the extra queries
';

create table if not exists cimapplication.geojson_lines (
    simulation text,
    coordinate_system text,

    geometry          - the type ("LineString") and line coordinates
    properties        - the attributes for this element from the extra queries
';

create index on cimapplication.geojson_lines (transformer);

create table if not exists cimapplication.geojson_polygons (
    simulation text,
