title: SQLAlchemy nearest datetime
body: <p>Is their any simple (fast) way to fetch a table and find the datetime nearest from a given dateTime in SQLAlchemy ? In most case the delta will be seconds between the datetime given and the one in the table. </p>
  
  <p>The date column is the primary key</p>
  
  <p>EDIT :
  I'm using SQLite</p>