SELECT
    current_database() AS o_table_catalog,
    n.nspname AS o_table_schema,
    c.relname AS o_table_name,
    a.attname AS o_raster_column,
    current_database() AS r_table_catalog,
    split_part(split_part(s.consrc,
    '''::name'::text,
    1),
    ''''::text,
    2)::name AS r_table_schema,
    split_part(split_part(s.consrc,
    '''::name'::text,
    2),
    ''''::text,
    2)::name AS r_table_name,
    split_part(split_part(s.consrc,
    '''::name'::text,
    3),
    ''''::text,
    2)::name AS r_raster_column,
    btrim(split_part(s.consrc,
    ',
    '::text,
    2))::integer AS overview_factor
FROM pg_class c,
    pg_attribute a,
    pg_type t,
    pg_namespace n,
    pg_constraint s
WHERE t.typname = 'raster'::name
        AND a.attisdropped = false
        AND a.atttypid = t.oid
        AND a.attrelid = c.oid
        AND c.relnamespace = n.oid
        AND (c.relkind::text = ANY (ARRAY['r'::character(1)::text,
    'v'::character(1)::text,
    'm'::character(1)::text,
    'f'::character(1)::text]))
        AND s.connamespace = n.oid
        AND s.conrelid = c.oid
        AND s.consrc ~~ '%_overview_constraint(%'::text
        AND NOT pg_is_other_temp_schema(c.relnamespace)
        AND has_table_privilege(c.oid,
    'SELECT'::text)