“PostgreSQL Eliminar filas duplicadas 2 columnas” Código de respuesta

PostgreSQL Eliminar filas duplicadas 2 columnas

DELETE FROM sf_table
WHERE id IN
    (SELECT id
    FROM 
        (SELECT id,
         ROW_NUMBER() OVER( PARTITION BY tosp, icd
        ORDER BY  id ) AS row_num
        FROM sf_table ) t
        WHERE t.row_num > 1 );