SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 3)
    Function arrayElement (children 1)
     ExpressionList (children 2)
      Identifier ProfileEvents
      Literal \'FileOpen\'
    Identifier read_rows
    Function arraySort (children 1)
     ExpressionList (children 1)
      Function arrayMap (children 1)
       ExpressionList (children 2)
        Function lambda (children 1)
         ExpressionList (children 2)
          Function tuple (children 1)
           ExpressionList (children 1)
            Identifier x
          Function arrayElement (children 1)
           ExpressionList (children 2)
            Function splitByChar (children 1)
             ExpressionList (children 2)
              Literal \'.\'
              Identifier x
            Literal Int64_-1
        Identifier columns
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.query_log
   Function and (children 1)
    ExpressionList (children 3)
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier type
       Literal \'QueryFinish\'
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier current_database
       Function currentDatabase (children 1)
        ExpressionList
     Function like (children 1)
      ExpressionList (children 2)
       Identifier query
       Literal \'%SELECT sum(b) FROM t_index_hint%\'
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier event_time_microseconds
