sql server - Is there a way to set my default as the number of seconds since 1970? -

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in tables setting current date/time as:

 [modifieddate]  datetime         default (getdate()) not null,

but there way set number of seconds since 1970. unix epoch (or unix time or posix time or unix timestamp) number of seconds have elapsed since january 1, 1970

i realize need have field integer not sure how set default value?

though suggest it's better store datetime2 value or datetime, can use alex k's suggestion:

declare @t table (     unixtime int default(datediff(second, '1970-01-01 00:00', getdate())),     createdate datetime default(getdate()) )

test:

insert @t default values  select * @t

result:

unixtime    createdate ----------- ----------------------- 1468930170  2016-07-19 12:09:30.380

another option, damien_the_unbeliever suggested, use computed column:

declare @t table (     createdate datetime default(getdate()),     unixtime datediff(second, '1970-01-01 00:00',createdate) )

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