我有一个api可以返回以下其中一项：
{ fill: 'string'}或{stroke: 'string'}或{effect: 'string'}
我的密钥类型如下：
type StyleKeyType =
| 'fill'
| 'stroke'
| 'effect';
，我想为该对象创建一个类型。我尝试过：
type StylesObject = { [K in StyleKeyType]?: string };
但这失败了，因为它认为{}是有效的，在我看来不是。
有没有一种方法可以生成这种类型，而无需手动拼出每种可能的对象类型？
答案 0 :(得分：1)
select
dd.full_date,
case
when month(dd.full_date) = 1 then
case
-- New Year
when day(dd.full_date) = 1 and date_format(dd.full_date ,'u') in (1,2,3,4,5) then 'NEW_YEAR'
-- If new year is a Saturday or Sunday, then I have used the immediate Monday as the holiday.
when day(dd.full_date) = 2 and date_format(dd.full_date ,'u') = 1 then 'NEW_YEAR'
when day(dd.full_date) = 3 and date_format(dd.full_date ,'u') = 1 then 'NEW_YEAR'
-- MLK Day. 3rd Monday of January
when day(dd.full_date) in (15,16,17,18,19,20,21) and date_format(dd.full_date,'u') = 1 then 'MLK'
when date_format(dd.full_date,'u') in (6) then 'WE_SAT'
when date_format(dd.full_date,'u') in (7) then 'WE_SUN'
else 'WD'
end
when month(dd.full_date) = 2 then
case
-- President's Day. 3rd Monday of February
when day(dd.full_date) in (15,16,17,18,19,20,21) and date_format(dd.full_date,'u') = 1 then 'PRES_DAY'
when date_format(dd.full_date,'u') in (6) then 'WE_SAT'
when date_format(dd.full_date,'u') in (7) then 'WE_SUN'
else 'WD'
end
when month(dd.full_date) = 5 then
case
-- Memorial Day. Last Monday of May
when day(dd.full_date) in (25,26,27,28,29,30,31) and date_format(dd.full_date,'u') = 1 then 'MEMORIAL'
when date_format(dd.full_date,'u') in (6) then 'WE_SAT'
when date_format(dd.full_date,'u') in (7) then 'WE_SUN'
else 'WD'
end
when month(dd.full_date) = 7 then
case
-- July 4th.
when day(dd.full_date) = 4 and date_format(dd.full_date ,'u') in (1,2,3,4,5) then 'JULY_4'
-- If July 4th is a Sunday then July 5th (Monday) is considered a holiday.
when day(dd.full_date) = 5 and date_format(dd.full_date ,'u') = 1 then 'JULY_4'
-- If July 4th is a Saturday then July 3rd (Friday) is considered a holiday.
when day(dd.full_date) = 3 and date_format(dd.full_date ,'u') = 5 then 'JULY_4'
when date_format(dd.full_date,'u') in (6) then 'WE_SAT'
when date_format(dd.full_date,'u') in (7) then 'WE_SUN'
else 'WD'
end
when month(dd.full_date) = 9 then
case
-- Labor Day. First Monday of September
when day(dd.full_date) in (1,2,3,4,5,6,7) and date_format(dd.full_date,'u') = 1 then 'LABOR'
when date_format(dd.full_date,'u') in (6) then 'WE_SAT'
when date_format(dd.full_date,'u') in (7) then 'WE_SUN'
else 'WD'
end
when month(dd.full_date) = 10 then
case
-- Columbus Day. 2nd Monday of October
when day(dd.full_date) in (8,9,10,11,12,13,14) and date_format(dd.full_date,'u') = 1 then 'COLUMBUS_DAY'
when date_format(dd.full_date,'u') in (6) then 'WE_SAT'
when date_format(dd.full_date,'u') in (7) then 'WE_SUN'
else 'WD'
end
when month(dd.full_date) = 11 then
case
-- Thanksgiving. 4th Thursday of November
when day(dd.full_date) in (22,23,24,25,26,27,28) and date_format(dd.full_date,'u') = 4 then 'THANKSGIVING'
when date_format(dd.full_date,'u') in (6) then 'WE_SAT'
when date_format(dd.full_date,'u') in (7) then 'WE_SUN'
else 'WD'
end
when month(dd.full_date) = 12 then
case
-- CHRISTMAS
when day(dd.full_date) = 25 and date_format(dd.full_date ,'u') in (1,2,3,4,5) then 'CHRISTMAS'
-- If 25th Dec is a Sunday
when day(dd.full_date) = 26 and date_format(dd.full_date ,'u') = 1 then 'CHRISTMAS'
-- If 25th Dec is a Saturday
when day(dd.full_date) = 24 and date_format(dd.full_date ,'u') = 5 then 'CHRISTMAS'
when date_format(dd.full_date,'u') in (6) then 'WE_SAT'
when date_format(dd.full_date,'u') in (7) then 'WE_SUN'
else 'WD'
end
when month(dd.full_date) in (3,4,6,8,10) then
case
when date_format(dd.full_date,'u') in (6) then 'WE_SAT'
when date_format(dd.full_date,'u') in (7) then 'WE_SUN'
else 'WD'
end
end as us_federal_holiday
from date_dim dd
有效，因为{}已将其所有属性标记为可选的StylesObject。
以下是一个对您有用的选项：
?