title: H2 Database Primary Key on Create
body: <p>If I create a new tabel in my h2 database like this...</p>
  
  <p><code>CREATE TABLE MAININCOMER(timestamp TIMESTAMP, value REAL);</code></p>
  
  <p>It means that the ID will be hidden and auto increment when i write to the tabel, right? - (as far as I have learnt from the tutorial and features)</p>
  
  <p>Will a Primary Key be assigned to the id <em>automatically</em>? and how important is the primary key anyway in the type of table with only 2 columns? Or should I as best practice create the table with Primary Key assigned to the timestamp? </p>
  
  <p><code>CREATE TABLE MAININCOMER(timestamp TIMESTAMP PRIMARY KEY, value REAL);</code></p>
  
  <p>Thanks, Alex</p>