sql server 2012 - How to get the value for the primary key, which is filled by a default sequence in ms sql? -

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for identity 

create table [sites] (   [siteid] bigint  identity(1,1) not null,    [name] nvarchar(50)  not null) alter table sites add constraint pk_sites primary key  ([siteid])

i 

insert dbo.sites(name) values('test'); select @@identity;

and siteid value.

create table [sites] (   [siteid] bigint  not null default (next value [seqmain]),    [name] nvarchar(50)  not null) alter table sites add constraint pk_sites primary key  ([siteid])

how siteid value if filled default sequence?

you can utilize output clause.
enables output values delete, insert, update or merge statement.

you use this:

insert dbo.sites(name) output inserted.siteid values('test')

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