Question

很抱歉另一个与日期有关的问题，但我找不到解决此问题的帖子。我正在尝试在日期表中添加一列，以显示每个月的天数，并对have年进行处理-以下是我的进度：

case when
Date like '01%' then '31'
Date like '02%' and  then ''
Date like '03%' then '31'
Date like '04%' then '30'
Date like '05%' then '31'
Date like '06%' then '30'
Date like '07%' then '31'
Date like '08%' then '31'
Date like '09%' then '30'
Date like '10%' then '31'
Date like '11%' then '30'
Date like '12%' then '31'

end as DAYS_IN_MONTH

Answer 1

如果您有日期，则可以使用：

fun View.getBackgroundColor() = (background as? ColorDrawable?)?.color ?: Color.TRANSPARENT

Answer 2

-生成带有日期的系列

with base_table as 
(
select
  dateadd(day, '-' || seq4(), current_date()) as dte
from
  table
    (generator(rowcount => 1095))
  )

-计算分组后每月的天数

SELECT count(*) as days_in_month,
         date_trunc('Month',dte) as month
  FROM base_table
  -- Filter here for necessary days
  where dte between '2019-01-01' and '2019-12-31'
  GROUP BY 2

-将此表与您的表连接起来

计算Le年的月份天数

2 个答案: