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year from yyddmm

Shambhu Rai 1,411 Reputation points
2023-03-31T16:19:33.8066667+00:00

Hi Expert,

how to extract year from yyddmm

20220202

and convert format to date like 02-0202022

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3 answers

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  1. Viorel 114.7K Reputation points
    2023-03-31T16:45:59.73+00:00

    Check an example:

    declare @example int = 20220203 -- 2 March 2022

select 
	@example / 10000 as [year], 
	datefromparts(@example / 10000, @example % 100, @example % 10000 / 100) as [date]
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  2. PercyTang-MSFT 12,426 Reputation points Microsoft Vendor
    2023-04-03T02:59:29.1966667+00:00

    Hi @Shambhu Rai

    What is the type of '20220202' in the example, int, char or something else?

    I looked for it in this official document and couldn't find the date format of yyddmm.

    https://learn.microsoft.com/en-us/sql/t-sql/functions/cast-and-convert-transact-sql?view=sql-server-ver15

    Extract the year: If it is an int type, you only need to divide by 10000 as Viorel demonstrated. If it is a char type, you can use the LEFT() function to truncate the year.

    convert format to date like 02-0202022

    Which date format is this, can you explain further?

    Best regards,

    Percy Tang

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  3. Olaf Helper 43,246 Reputation points
    2023-04-03T07:53:32.4333333+00:00

    Convert it to varchar and then to date:

    select convert(date, convert(varchar(8), 20220202))
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