initial commit

functions/fn_GetHoliday.sql

@@ -0,0 +1,52 @@
+use Leo
+go
+
+alter function dbo.fn_GetHoliday (@date date)
+  returns varchar(50)
+as
+begin
+  declare @s varchar(50)
+
+  select @s =
+    case
+      when dbo.fn_ShiftHolidayToWorkday(cast(yr as varchar) + '-01-01') = @date
+        then 'New Year'
+      when dbo.fn_ShiftHolidayToWorkday(cast(yr + 1 as varchar) + '-01-01') = @date
+        then 'New Year'
+      when mn = 1 and DayOfMonth between 15 and 21 and DayName = 'Monday'
+        then 'Martin Luther King Jr Day'
+      when mn = 2 and DayOfMonth between 15 and 21 and DayName = 'Monday'
+        then 'Presidents'' Day'
+      when mn = 5 and DayOfMonth >= 25 and DayName = 'Monday'
+        then 'Memorial Day'
+      when dbo.fn_ShiftHolidayToWorkday(cast(yr as varchar) + '-06-19') = @date
+        then 'Juneteenth'
+      when dbo.fn_ShiftHolidayToWorkday(cast(yr as varchar) + '-07-04') = @date
+        then 'Independence Day'
+      when mn = 9 and DayOfMonth <= 7 and DayName = 'Monday'
+        then 'Labor Day'
+      when dbo.fn_ShiftHolidayToWorkday(cast(yr as varchar) + '-11-11') = @date
+        then 'Veteran''s Day'
+      when mn = 10 and DayOfMonth between 8 and 14 and DayName = 'Monday'
+        then 'Columbus Day'
+      when mn = 11 and DayOfMonth between 22 and 28 and DayName = 'Thursday'
+        then 'Thanksgiving Day'
+      --when mn = 11 and DayOfMonth between 23 and 29 and DayName = 'Friday'
+      --  then 'Day After Thanksgiving'
+      when dbo.fn_ShiftHolidayToWorkday(cast(yr as varchar) + '-12-25') = @date
+        then 'Christmas Day'
+      --when dbo.fn_ShiftHolidayToWorkday(cast(yr as varchar) + '-12-31') = @date
+      --  then 'New Years Eve'
+      else null
+    end
+  from (
+    select
+      yr = year(@date),
+      mn = month(@date),
+      DayOfMonth = day(@date),
+      DayName = datename(weekday,@date)
+  ) c
+
+  return @s
+end
+go