title: T-SQL how to prevent deletion first row in table
body: <p>I have a table like this:</p>
  
  <pre><code>CREATE TABLE Users
  (
  
      idUser int IDENTITY(1,1) PRIMARY KEY,
  firstName varchar(40) NOT NULL,
  secondName varchar(40),
  lastName varchar(70) NOT NULL,
  position varchar(80),
  section varchar(80) NOT NULL
  )
  </code></pre>
  
  <p>And someone need to delete only one of the Users. How can I prevent first row being deleted?
  I can't reinsert it, first row must have idUser = 1.</p>