BigQuery Arrays - 检查 Array 是否包含特定值

Question

我正在尝试查看 BigQuery 数组中是否存在特定的一组项目。

以下查询有效（检查数组中是否存在 1 项）：

WITH sequences AS
(
    SELECT 1 AS id, [10,20,30,40] AS some_numbers
        UNION ALL 
    SELECT 2 AS id, [20,30,40,50] AS some_numbers
        UNION ALL 
    SELECT 3 AS id, [40,50,60,70] AS some_numbers
)
SELECT id, some_numbers 
FROM sequences 
WHERE 20 IN UNNEST(some_numbers)

下面是我无法做的（检查数组中是否存在超过 1 个项目）：

（此查询错误）

WITH sequences AS
(
    SELECT 1 AS id, [10,20,30,40] AS some_numbers
        UNION ALL 
    SELECT 2 AS id, [20,30,40,50] AS some_numbers
        UNION ALL 
    SELECT 3 AS id, [40,50,60,70] AS some_numbers
)
SELECT id, some_numbers 
FROM sequences 
WHERE (20,30) IN UNNEST(some_numbers)

我设法找到了以下解决方法，但我觉得有更好的方法来做到这一点：

WITH sequences AS
(
    SELECT 1 AS id, [10,20,30,40] AS some_numbers
        UNION ALL 
    SELECT 2 AS id, [20,30,40,50] AS some_numbers
        UNION ALL 
    SELECT 3 AS id, [40,50,60,70] AS some_numbers
)

SELECT id, some_numbers  
FROM  sequences
WHERE (
    
    ( 
        SELECT COUNT(1)
        FROM UNNEST(some_numbers) s
        WHERE s in (20,30)
    ) > 1
)

欢迎提出任何建议。

Answer 1

假设您正在查找匹配数组 [20, 30] 中的所有元素都在目标数组 (some_numbers) 中找到的行。还假设（匹配和目标）数组中没有重复的数字

select id, some_numbers
from sequences a,
unnest([struct([20, 30] as match)]) b
where (
  select count(1) = array_length(match) 
  from a.some_numbers num
  join b.match num
  using(num)
)

Answer 2

没什么好建议的...Official docs建议使用exists：

WHERE EXISTS (SELECT *
              FROM UNNEST(some_numbers) AS s
              WHERE s in (20,30));