1

希望你做得好！..我正在尝试根据雪花中的不同列连接 case when 语句的值..请在下面找到代码块

select *,

case when checkouttime is null then ',Patient is not checked out' else '' END
+ case when primarypatientinsuranceid is null then ',No insurance information' else '' END
+ case when closedby is null then ',Encounter not signed off' else '' END
+ case when billingtabcheckeddate is null then ',Billing tab is not checked' else '' 
+ case when alreadyrouted is null then ',Missing slip already routed' else 'Valid Missing slip'

END as resultant

from final

我收到错误消息“Unexpected as”

我正在尝试构建结果列输出，如下所示

Patient is not checked out/Billing tab is not checked
Missing slip already routed
Encounter not signed off/No insurance information /Billing tab is not checked
Valid Missing slip

谢谢，阿伦

4

2 回答 2

1

一种更简洁的替代方法，可根据需要添加逗号，使用array_to_string(array_construct_compact())：

with data as (
    select null checkouttime
        , 2 primarypatientinsuranceid
        , null closedby
        , 4 billingtabcheckeddate
        , 5 alreadyrouted
)

select array_to_string(array_construct_compact(
    iff(checkouttime is null, 'Patient is not checked out', null) 
    , iff(primarypatientinsuranceid is null, 'No insurance information', null)
    , iff(closedby is null, 'Encounter not signed off', null)
    , iff(billingtabcheckeddate is null, 'Billing tab is not checked', null)
    , iff(alreadyrouted is null, 'Missing slip already routed', 'Valid Missing slip')
    ), ',  ')
as resultant
from data
于 2021-11-16T21:53:34.027 回答
1

在雪花中，您使用“||” 连接字符串，而不是“+”：

select 
case when true then ',Patient is not checked out' else '' END
|| case when false then ',No insurance information' else '' END
|| case when true then ',Encounter not signed off' else '' END
|| case when true then ',Billing tab is not checked' else '' END
|| case when false then ',Missing slip already routed' else 'Valid Missing slip' END 
as resultant;

https://docs.snowflake.com/en/sql-reference/functions/concat.html

于 2021-11-16T11:33:34.233 回答