3 - access("OBJECT_ID"<10)
6 - access("OBJECT_ID">=10 AND "OBJECT_ID"<20)
统计信息
----------------------------------------------------------
1 recursive calls
0 db block gets
4 consistent gets
0 redo size
381 bytes sent via SQL*Net to client
337 bytes received via SQL*Net from client
2 SQL*Net roundtrips to/from client
0 sorts (memory)
0 sorts (disk)
1 rows processed