Create a GeoJSON of India from ne_10m_admin_0_countries

index.sql

COPY 
( 
       SELECT row_to_json(fc) AS json_out 
       FROM   ( 
                     SELECT 'FeatureCollection'         AS type, 
                            array_to_json(array_agg(f)) AS features 
                     FROM   ( 
                                     SELECT   'Feature'                                              AS type,
                                              st_asgeojson(st_transform(st_union(geom), 4326))::json AS geometry
                                     FROM     ne_10m_admin_0_countries 
                                     WHERE    iso_a3 = 'IND' 
                                     GROUP BY iso_a3 ) f) fc ) TO '/Users/<user_name>/Desktop/india.json';

india.json