InsertQuery   (children 2)
 Identifier moving_sum_num
 SelectWithUnionQuery (children 1)
  ExpressionList (children 2)
   SelectQuery (children 3)
    ExpressionList (children 3)
     Literal \'b\' (alias k)
     Function plus (alias dt) (children 1)
      ExpressionList (children 2)
       Function toDateTime (children 1)
        ExpressionList (children 1)
         Literal \'2001-02-03 00:00:00\'
       Identifier number
     Identifier number (alias v)
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier system.numbers
    Literal UInt64_5
   SelectQuery (children 3)
    ExpressionList (children 3)
     Literal \'a\' (alias k)
     Function plus (alias dt) (children 1)
      ExpressionList (children 2)
       Function toDateTime (children 1)
        ExpressionList (children 1)
         Literal \'2001-02-03 00:00:00\'
       Identifier number
     Identifier number (alias v)
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier system.numbers
    Literal UInt64_5