Question

我使用一个字符串，现在我想使用输出，但是由于出现split-输出被认为是Repeated Sting，因此也被认为是ARRAY的错误，所以出现了错误。

我该如何解决？

谢谢

With ex1 as (
SELECT 'test1,test2' as example
),

ex2 as (
SELECT 'test1' as str1, 5 as value)

SELECT * 
from

(SELECT split(example,',') as strings
from ex1)

left join 
    ex2
on str1 = strings

Answer 1

在使用LEFT JOIN之前，应先UNNEST数组：

With ex1 as (
SELECT 'test1,test2' as example
),
ex2 as (
SELECT 'test1' as str1, 5 as value)
SELECT  *
from
UNNEST ((SELECT split(example,',') as strings
from ex1
)) as strings
left join 
ex2
on str1 = strings

Answer 2

您需要取消分割结果：

WITH 
ex1 AS (
SELECT 'test1,test2' as example),
ex2 AS (
SELECT 'test1' as str1, 5 as value)
SELECT * from
(SELECT * FROM UNNEST((SELECT split(example) FROM ex1)) as strings)
left join 
    ex2
on str1 = strings

Bigquery-重复字串

2 个答案: