如何使用列作为参数将表与其他表分开

Question

我有数百行的下表： table

我正在尝试将每一行分开并发送到以下表格：“过去 15 天的访问”、“过去 30 天的访问”和“超过 30 天未访问”。

根据“tbdlf fsimage accesstime”列中的日期，进行此分离并将其发送到相应的表。

我正在通过 Hue 文件浏览器查询编辑器执行此操作

Answer 1

您可以计算日期差异并根据条件使用multi-insert将数据插入到不同的表中：

with src as (
select t.* --list all columns which you need to insert
       --calculate category depending on difference in days
       case when datediff(current_date,to_date(accesstime))> 30 then 'not accessed for more than 30 days'
            when datediff(current_date,to_date(accesstime))> 15 then 'access in the last 30 days'
            when datediff(current_date,to_date(accesstime))<= 15 then 'access in the last 15 days'      
        end as category
  from tbdlf_fsimage t 
)

insert into table not_accessed_for_more_than_30_days
select --list columns here
 from src 
 where category='not accessed for more than 30 days'

insert into table access_in_the_last_30_days
select --list columns here
 from src 
 where category='access in the last 30 days'

insert into table access_in_the_last_15_days
select --list columns here
 from src 
 where category='access in the last 15 days'
; --end of multi-insert