卡在 Presto SQL 中的日期函数上

Question

我的代码中的日期函数卡住了：

try(date_parse(min(MilestoneDate), '%Y-%m-%d %H:%i:%s')) >  CURRENT_DATE

消息错误是：一般内部错误。我不知道这意味着什么。 如果我注释掉 'try(date_parse(min(MilestoneDate), '%Y-%m-%d %H:%i:%s')) > CURRENT_DATE'，则整个代码都有效。但我真的需要它基于要求。我也尝试：拥有 DATE(SUBSTR(min(finishdate), 1, 10)) > CURRENT_DATE。但错误消息是：无法投射到日期。请帮忙。谢谢。

With ManagementView1 as (

select * from Management_View a


left join


(select *
 from

(select projectobjectid, id as activity_id,finishdate as MilestoneDate, name as Milestone
 from activity 
 where date = (select max(date) from activity)
 union ALL 
 select projectobjectid, id as activity_id, min(finishdate) as finishdate, 
 name
 from activity 
 where id in ('FS1000', 'PR1000', 'PR1500')

 group by projectobjectid, id, name)
) b

ON  try_cast(a.objectid as double) = b.projectobjectid 
 AND a.id = b.activity_id 
)    

select * from

    (
        select site, building, id, milestonetype, MilestoneDate, Milestone 
         from ManagementView1

         WHERE  milestonetype in ('Breakground', 'Energization')

        UNION ALL 

       select site, building, id, milestonetype, min(MilestoneDate) as 
        MilestoneDate,  Milestone

        from ManagementView1 

        where milestonetype = 'PR'

       having try(date_parse(min(MilestoneDate), '%Y-%m-%d %H:%i:%s')) > 
       CURRENT_DATE


       --having DATE(SUBSTR(min(finishdate), 1, 10)) > CURRENT_DATE

         -- and milestonetype = 'PR'
        group by site, building, id, milestonetype, Milestone


    ) c

Answer 1

我认为try() 不能与date_parse() 一起使用——即使可以，它也不会捕获所有错误。但它应该适用于cast()。所以，试试这个：

DATE(SUBSTR(MIN(finishdate), 1, 10))

MIN(TRY(CAST(SUBSTR(MilestoneDate, 1, 10) as date))) > CURRENT_DATE