CreateQuery probe0 (children 3)
 Identifier probe0
 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 1)
     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 12:00:00\'
         Function toIntervalHour (children 1)
          ExpressionList (children 1)
           Identifier number
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function numbers (children 1)
        ExpressionList (children 1)
         Literal UInt64_10
