get id from select in sql

Question

My question might sound really stupid, but I am stuck. Here is the pseudo code of what I am trying to do in SQL Server

if exists(select id from employee where Email='saghir@abc.com')
begin
    insert in tasks with selected id
end
else
begin
    insert in employee value Email='blah';
    insert in tasks with new id in employee
end

Hopes for you suggestions.. .

Answer 1

use variable

declare @foundId int

select @foundId = id from employee where Email='saghir@abc.com'

if @foundId is not null
begin
    insert in tasks (... @foundId... )
end
else
begin
    insert in employee value Email='blah';
    insert in tasks with new id in employee
end

Answer 2

You can use Scope_Identity() to get the last inserted key value.

if exists(select id from employee where Email='saghir@abc.com')
begin
    insert tasks(employeeid, task) 
    select id, 'new task' from employee where email = 'saghir@abc.com'
end
else
begin
    insert employee (email) values ('blah');
    select @id = Scope_identity();
    insert tasks(employeeid, task) values (@id, 'new task')
end

NB. Using Ident_Current or @@Identity is more prone to undesirable side effects.

http://blog.sqlauthority.com/2007/03/25/sql-server-identity-vs-scope_identity-vs-ident_current-retrieve-last-inserted-identity-of-record/

Answer 3

Declare @ID int
select @ID=id from employee where Email='saghir@abc.com'
if @ID is  null
begin
    insert into employee (Email,...) values ('saghir@abc.com',...)
    Select @ID=ident_Current('employee')
end

insert into tasks (employee_ID,...) Values (@ID,..)

Answer 4

Use your pseudo code to shape a stored procedure: getEmployeeId_byEmail.

The second block of the stored procedure will obtain the new EmployeeId with @@Identity:

/* untested */
insert into employee values(/*what ever*/)
insert into task(/*what ever*/, @@Identity)

Have a look here.