title: Query Oracle constrain after search_condition's value
body: <p>I want to find a constraint in Oracle SQL that has a certain search_condition. Something like this:</p>
  
  <pre><code>SELECT constraint_name, constraint_type,search_condition
  FROM USER_CONSTRAINTS
  WHERE table_name ='MYTABLE' AND search_condition = '"myColumn" IS NOT NULL';
  </code></pre>
  
  <p>Problem is i get error "Ilegal use of datatype LONG".</p>
  
  <p>I'd appreciate a working alternative. Thanks!</p>