SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function abs (children 1)
     ExpressionList (children 1)
      Function minus (children 1)
       ExpressionList (children 2)
        Function uniq (children 1)
         ExpressionList (children 1)
          Identifier WatchID
        Function uniqExact (children 1)
         ExpressionList (children 1)
          Identifier WatchID
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test.hits