SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 5)
   ExpressionList (children 3)
    Identifier partition
    Function toUnixTimestamp (alias min_unix_time) (children 1)
     ExpressionList (children 1)
      Function MIN (children 1)
       ExpressionList (children 1)
        Identifier min_time
    Function toUnixTimestamp (alias max_unix_time) (children 1)
     ExpressionList (children 1)
      Function MAX (children 1)
       ExpressionList (children 1)
        Identifier max_time
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.parts
   Function and (children 1)
    ExpressionList (children 3)
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier database
       Function currentDatabase (children 1)
        ExpressionList
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier table
       Literal \'datetime_table\'
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier active
       Literal UInt64_1
   ExpressionList (children 1)
    Identifier partition
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier partition
 Identifier CSV
