BigQuery - 具有不同 WHERE 参数的嵌套查询？

Question

我正在尝试按日期获取 user_counts 和 new_user_counts，其中 new_user_counts 由条件定义 WHERE 时间戳日期 event_timestamp = 时间戳日期 user_first_touch_timestamp 而 user_counts 将获取同一日期范围内 user_pseduo_id 字段的不同计数。如何在同一个查询中执行此操作？这是我当前查询的样子。

最终，我希望结果如下：

|Date     | new_user_count |       user_counts |
|20200820 |       X        |                 Y |

这是我在代码第 8 行遇到的错误： 语法错误：函数调用不能应用于此表达式。函数调用需要路径，例如a.b.c() 在 [8:5]

谢谢。

    SELECT
    event_date,
    COUNT (DISTINCT(user_pseudo_id)) AS new_user_counts FROM
    `my-google-analytics-table-name.*`
    WHERE DATE(TIMESTAMP_MICROS(event_timestamp)) = 
    DATE(TIMESTAMP_MICROS(user_first_touch_timestamp))
    AND event_date BETWEEN '20200820' AND '20200831'
    (SELECT
    COUNT (DISTINCT(user_pseudo_id)) AS user_counts 
    FROM `my-google-analytics-table-name.*`
    WHERE event_date BETWEEN '20200820' AND '20200831'
    )
    GROUP BY event_date
    ORDER BY event_date ASC

Answer 1

在下面尝试（仅基于您的原始查询，只是修复语法/逻辑）

SELECT
  event_date,
  COUNT(DISTINCT IF(
    DATE(TIMESTAMP_MICROS(event_timestamp)) = DATE(TIMESTAMP_MICROS(user_first_touch_timestamp)), 
    user_pseudo_id, 
    NULL
  )) AS new_user_counts, 
  COUNT(DISTINCT(user_pseudo_id)) AS user_counts 
FROM `my-google-analytics-table-name.*`
GROUP BY event_date
ORDER BY event_date ASC