SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Function uniqIf (children 1)
     ExpressionList (children 2)
      Identifier uuid
      Function empty (children 1)
       ExpressionList (children 1)
        Identifier uuid
    Function uniqIf (children 1)
     ExpressionList (children 2)
      Identifier uuid
      Function notEmpty (children 1)
       ExpressionList (children 1)
        Identifier uuid
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 3)
         SelectQuery (children 1)
          ExpressionList (children 1)
           Function toUUID (alias uuid) (children 1)
            ExpressionList (children 1)
             Literal \'00000000-0000-0000-0000-000000000002\'
         SelectQuery (children 1)
          ExpressionList (children 1)
           Function toUUID (alias uuid) (children 1)
            ExpressionList (children 1)
             Literal \'00000000-0000-0000-0000-000000000000\'
         SelectQuery (children 1)
          ExpressionList (children 1)
           Function toUUID (alias uuid) (children 1)
            ExpressionList (children 1)
             Literal \'00000000-0000-0000-0000-000000000001\'
