SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier tab
   Function hasToken (children 1)
    ExpressionList (children 2)
     Identifier s
     Literal \'Click\'
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier k