从 yyyy-mm-dd 到 mm-yy？

Question

How do I convert a date like 2020-03-25 to 03-20?

I tried this:

select 
  FORMAT (d.[Date], 'MM-YY') as monthyear
from x  d

But I am getting 03-YY

Why do I not get the year?

Answer 1

In SQL Server:

select format(d.[Date], 'MM-yy') as monthyear
from x d

Answer 2

I would personally suggest using CONVERT with a style code over FORMAT ; FORMAT can be a pretty slow function. The style 5 with the first 3 characters removed is what you're after:

SELECT STUFF(CONVERT(YT.[date],5),1,3,'') AS MonthYear
FROM dbo.YourTable YT;