InsertQuery   (children 2)
 Identifier testNullableStates
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 13)
     Function plus (alias ts) (children 1)
      ExpressionList (children 2)
       Function toDateTime (children 1)
        ExpressionList (children 1)
         Literal \'2020-01-01 00:00:00\'
       Identifier number
     Function toString (alias id) (children 1)
      ExpressionList (children 1)
       Function minus (children 1)
        ExpressionList (children 2)
         Function modulo (children 1)
          ExpressionList (children 2)
           Identifier number
           Literal UInt64_999
         Literal UInt64_5
     Literal NULL (alias string)
     Literal NULL (alias float64)
     Literal NULL (alias float32)
     Literal NULL (alias decimal325)
     Literal NULL
     Literal NULL
     Literal NULL
     Literal NULL
     Literal NULL
     Literal NULL
     Literal NULL
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function numbers (children 1)
        ExpressionList (children 1)
         Literal UInt64_500