1、求自然日、上一自然日、下一自然日、本周初/末、本月初/末、本季初/末、本年初/末、一月/三月/六月/一年前等
select
calendar_day as calendar_day, --'自然日(日期型)'
regexp_replace(calendar_day,'-','') as calendar_dt, --'自然日(數值型)'
date_add(calendar_day, -1) as last_calendar_dt, --'上一自然日'
date_add(calendar_day, 1) as next_calendar_dt, --'下一自然日'
date_add(calendar_day,7-cast(default.date_format(calendar_day, 'u') as int)) as weekend_dt, --'本週末日期'
date_sub(default.add_months(calendar_day, 1), day(calendar_day)) as monthend_dt, --'本月末日期'
date_sub(default.add_months(to_date(concat(year(calendar_day),'-01-01')), 3*cast(ceil(month(calendar_day)/3) as int)), 1) as quartend_dt, --'本季末日期'
to_date(concat(year(calendar_day),'-12-31')) as yearend_dt, --'本年末日期'
date_add(calendar_day,1-cast(default.date_format(calendar_day,'u') as int)) as week_1st_dt, --'本周初日期'
date_sub(calendar_day,dayofmonth(calendar_day)-1) as month_1st_dt, --'本月初日期'
default.add_months(to_date(concat(year(calendar_day),'-01-01')), 3*cast(ceil(month(calendar_day)/3) - 1 as int)) as quart_1st_dt, --'本季初日期'
to_date(concat(year(calendar_day),'-01-01')) as year_1st_dt, --'本年初日期'
default.add_months(calendar_day,-1) as one_month_ago, --'乙個月前'
default.add_months(calendar_day,-3) as three_month_ago, --'三個月前'
default.add_months(calendar_day,-6) as six_month_ago, --'六個月前'
default.add_months(calendar_day,-12) as one_year_ago, --'一年前'
default.add_months(calendar_day,-24) as two_year_ago, --'兩年前'
default.add_months(calendar_day,-36) as three_year_ago, --'三年前'
default.add_months(calendar_day,-60) as five_year_ago, --'五年前'
default.add_months(calendar_day,-120) as ten_year_ago --'十年前'
from (select date_add(date '2008-01-01', t1.pos) as calendar_day
from (select po***plode(split(space(datediff(date '2025-12-31', date '2008-01-01')),' '))) t1
)t2select t1.calendar_day, t1.mkt_code as mkt_code, if(isnotnull(t2.mkt_code), '是', '否') as if_trade_dt from
(select
calendar_day,
mkt_code
from tmp_date t1
lateral view explode(split('001,003,004',',')) union_mkt_code as mkt_code) t1
left join (
select '001' as mkt_code,
trade_days as calendar_dt from tmp_shanghai_date
union all
select '003' as mkt_code,
trade_days as calendar_dt from tmp_hongkong_date
union all
select '004' as mkt_code,
trade_days as calendar_dt from tmp_bank_date) t2
on t1.calendar_dt = t2.calendar_dt
and t1.mkt_code = t2.mkt_code
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