SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 2)
    Function CAST (children 1)
     ExpressionList (children 2)
      Function isNullable (children 1)
       ExpressionList (children 1)
        Identifier number
      Literal \'Boolean\'
    Function now (children 1)
     ExpressionList
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers (children 1)
       ExpressionList (children 1)
        Literal UInt64_2
   ExpressionList (children 2)
    Function CAST (children 1)
     ExpressionList (children 2)
      Function isNullable (children 1)
       ExpressionList (children 1)
        Identifier number
      Literal \'Boolean\'
    Function now (children 1)
     ExpressionList
 Identifier Null
