title: SQL Arithmetic overflow error for data type tinyint, value = 300
body: <p>I'm really new in Microsoft SQL Server, I'm trying to update the value of a  column to null. But it gives 'Arithmetic overflow error for data type tinyint, value = 300.' In the table design, this column's datatype is tinyint(allow nulls is clicked). Please help!</p>
  
  <blockquote>
    <p>Update tblMedicationOrder   set MedicationID = Null</p>
  </blockquote>