SQL 适用于 Athena Engine v1 但不适用于 v2

Question

我有一个嵌入到系统中的 SQL 查询，到目前为止，该系统在 Athena 中使用引擎版本 1 成功运行。但是它在引擎版本 2 中失败，我无法找出原因。

这是 SQL 的通用版本。它总结了 3 组的人数：成年人、纽约居民和两者的重叠。 （纽约成年人）。

在版本 1 中这有效，但在 v2 中我收到错误“无法解析列 z.id_field”

WITH BASE AS (SELECT person_id, age, state
              FROM people 
              WHERE gender  = 'male'
                 )

    ,group_a as (
SELECT distinct (person_id) as id_field
FROM BASE
WHERE age > 17
),
  
  group_b as (
SELECT distinct (person_id) as id_field
FROM BASE
WHERE state = 'NY'
)


SELECT CASE WHEN z.id_field is null then 'group_b_only' WHEN r.id_field is null then 'group_a_only' ELSE 'Overlap' END as group
      , COUNT (coalesce (z.id_field, r.id_field)) as count
FROM group_a AS z FULL OUTER JOIN group_b as r USING (id_field)
GROUP BY 1;

Answer 1

请注意，在 any 数据库中，这作为聚合会更简单，也可能更快：

SELECT grp, COUNT(*)
FROM (SELECT person_id,
             (CASE WHEN MAX(age) > 17 AND MAX(state) = 'NY' THEN 'Both'
                   WHEN MAX(age) > 17 THEN 'Age Only'
                   ELSE 'State Only'
              END) as grp
      FROM people 
      WHERE gender  = 'male' AND
            (age > 17 OR state = 'NY')
      GROUP BY person_id
     ) x
GROUP BY grp;

以上假设person_id可以在people中重复。如果不是这样，那么可以简化为：

SELECT (CASE WHEN age > 17 AND state = 'NY' THEN 'Both'
             WHEN age > 17 THEN 'Age Only'
             ELSE 'State Only'
         END) as grp, COUNT(*)
FROM people 
WHERE gender  = 'male' AND
      (age > 17 OR state = 'NY')
GROUP BY grp;