SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 2)
    Literal \'Test hasToken(text, nullable(text)):\'
    Function count (children 1)
     ExpressionList
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier tab
   Function hasToken (children 1)
    ExpressionList (children 2)
     Identifier c0
     Function toNullable (children 1)
      ExpressionList (children 1)
       Literal \'Hello\'