Top URLs por conversión cruzando GSC + GA4

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-- Top URLs por conversión: métricas GSC + conversiones GA4
WITH gsc_urls AS (
  SELECT
    url,
    SUM(clicks) AS clics_gsc,
    SUM(impressions) AS impresiones,
    ROUND(SAFE_DIVIDE(SUM(clicks), SUM(impressions)) * 100, 2) AS ctr,
    ROUND(SUM(sum_top_position + impressions) / SUM(impressions), 2) AS posicion_media
  FROM
    `your-project.searchconsole.searchdata_url_impression`
  WHERE
    data_date BETWEEN DATE_SUB(CURRENT_DATE(), INTERVAL 28 DAY) AND CURRENT_DATE()
    AND search_type = 'WEB'
  GROUP BY
    url
  HAVING
    clics_gsc >= 10
),
ga4_conv AS (
  SELECT
    REGEXP_EXTRACT(
      (SELECT value.string_value FROM UNNEST(event_params) WHERE key = 'page_location'),
      r'(https?://[^?#]+)'
    ) AS url_normalizada,
    COUNT(
      DISTINCT CONCAT(
        user_pseudo_id, '.',
        CAST(
          (SELECT value.int_value FROM UNNEST(event_params) WHERE key = 'ga_session_id')
        AS STRING)
      )
    ) AS sesiones_organicas,
    COUNTIF(
      event_name IN ('generate_lead', 'purchase', 'sign_up')
    ) AS conversiones
  FROM
    `your-project.analytics_XXXXXXXXX.events_*`
  WHERE
    _TABLE_SUFFIX BETWEEN FORMAT_DATE('%Y%m%d', DATE_SUB(CURRENT_DATE(), INTERVAL 28 DAY))
      AND FORMAT_DATE('%Y%m%d', CURRENT_DATE())
    AND traffic_source.medium = 'organic'
  GROUP BY
    url_normalizada
)
SELECT
  g.url,
  g.clics_gsc,
  g.impresiones,
  g.ctr,
  g.posicion_media,
  IFNULL(c.sesiones_organicas, 0) AS sesiones_ga4,
  IFNULL(c.conversiones, 0) AS conversiones,
  ROUND(SAFE_DIVIDE(IFNULL(c.conversiones, 0), g.clics_gsc) * 100, 2) AS tasa_conversion
FROM
  gsc_urls g
  LEFT JOIN ga4_conv c ON g.url = c.url_normalizada
ORDER BY
  conversiones DESC
LIMIT 50