CreateQuery events0 (children 3)
 Identifier events0
 Storage definition (children 2)
  Function MergeTree (children 1)
   ExpressionList
  Function COALESCE (children 1)
   ExpressionList (children 2)
    Identifier begin
    Function toDateTime (children 1)
     ExpressionList (children 1)
      Literal \'9999-12-31 23:59:59\'
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 2)
     Function toNullable (alias begin) (children 1)
      ExpressionList (children 1)
       Function plus (children 1)
        ExpressionList (children 2)
         Function toDateTime (children 1)
          ExpressionList (children 1)
           Literal \'2023-03-21 13:00:00\'
         Function toIntervalHour (children 1)
          ExpressionList (children 1)
           Identifier number
     Identifier number (alias value)
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function numbers (children 1)
        ExpressionList (children 1)
         Literal UInt64_4
