Usuarios nuevos vs recurrentes desde orgánico

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-- Usuarios nuevos vs recurrentes en tráfico orgánico
-- ga_session_number = 1 indica primera sesión del usuario
SELECT
  CASE
    WHEN (SELECT value.int_value FROM UNNEST(event_params)
      WHERE key = 'ga_session_number') = 1 THEN 'Nuevo'
    ELSE 'Recurrente'
  END AS tipo_usuario,
  COUNT(DISTINCT user_pseudo_id) AS usuarios,
  COUNT(
    DISTINCT CONCAT(
      user_pseudo_id, '.',
      CAST(
        (SELECT value.int_value FROM UNNEST(event_params) WHERE key = 'ga_session_id')
      AS STRING)
    )
  ) AS sesiones
FROM
  `your-project.analytics_XXXXXXXXX.events_*`
WHERE
  _TABLE_SUFFIX BETWEEN FORMAT_DATE('%Y%m%d', DATE_SUB(CURRENT_DATE(), INTERVAL 30 DAY))
    AND FORMAT_DATE('%Y%m%d', CURRENT_DATE())
  AND traffic_source.medium = 'organic'
  AND event_name = 'session_start'
GROUP BY
  tipo_usuario
ORDER BY
  usuarios DESC