Question

I have created table in my db in this statement

CREATE TABLE tPerson
    (
        id INT NOT NULL PRIMARY KEY identity(1,1)
        , name NVARCHAR(100) not null
        , email NVARCHAR(30) not null
    )
GO

Now I insert new value with INSERT. My question is how can I get id of current added row? Any idea ??

Answer 1

Assuming SQL server, you should check out this article to gain a good understanding of retrieving identities.

Here’s a snippet:

SELECT @@IDENTITY

It returns the last IDENTITY value produced on a
connection, regardless of the table that produced the value, and
regardless of the scope of the statement that produced the value.
@@IDENTITY will return the last identity value entered into a table in
your current session. While @@IDENTITY is limited to the current
session, it is not limited to the current scope. If you have a trigger
on a table that causes an identity to be created in another table, you
will get the identity that was created last, even if it was the
trigger that created it.

SELECT SCOPE_IDENTITY()

It returns the last IDENTITY value produced on
a connection and by a statement in the same scope, regardless of the
table that produced the value. SCOPE_IDENTITY(), like @@IDENTITY, will
return the last identity value created in the current session, but it
will also limit it to your current scope as well. In other words, it
will return the last identity value that you explicitly created,
rather than any identity that was created by a trigger or a user
defined function.

SELECT IDENT_CURRENT(‘tablename’)

It returns the last IDENTITY value
produced in a table, regardless of the connection that created the
value, and regardless of the scope of the statement that produced the
value. IDENT_CURRENT is not limited by scope and session; it is
limited to a specified table. IDENT_CURRENT returns the identity value
generated for a specific table in any session and any scope.