I am back to start writing posts about all things that related to SQL Server. There are lots of examples over a internet about how create a calendar table in T-SQL.
I would like to show you a little bit different technique to create a calendar table which based on the time interval. Let say we need to create a table with one hour interval, I have done it recently for our BI team to create Power BI reports.
Simple we are going to use a recursivequery to create such table.
with tmp(plant_date) as
(
select CAST('20200101' as datetime) --- Start date
union all
select
DATEADD(hour, 1, plant_date)
from
tmp
where DATEADD(hour, 1, plant_date)
< '20281231'
)/*After we create a simple table you can extract an year , month, a day and etc.*/
select plant_date,cast(plant_date as date) date,YEAR(plant_date) Year,
CASE WHEN DATEPART(MONTH, plant_date)<10 THEN '0'
+
CAST(DATEPART(MONTH, plant_date) AS VARCHAR(2))
ELSE CAST(DATEPART(MONTH, plant_date) AS VARCHAR(2))
END Month,
DATENAME(MONTH,plant_date),
CASE WHEN DATEPART(day, plant_date)<10 THEN '0'
+
CAST(DATEPART(day, plant_date) AS VARCHAR(2))
ELSE CAST(DATEPART(day, plant_date) AS VARCHAR(2)) END day,
DATEPART(hour,plant_date) hour
from tmp
option (maxrecursion 0)
I hope the above script helps you.
No comments:
Post a Comment