日期:2014-05-17 浏览次数:20894 次
SQL> select * from 2 ( 3 select a.*, rownum as rn from css_bl_view a 4 where capture_phone_num = '(1) 925-4604800' 5 ) b 6 where b.rn between 6 and 10; 6 rows selected. Execution Plan ---------------------- 0 SELECT STATEMENT Optimizer=CHOOSE (Cost=2770 Card=2183 Bytes =7166789) 1 0 VIEW (Cost=2770 Card=2183 Bytes=7166789) 2 1 COUNT 3 2 TABLE ACCESS (FULL) OF 'CSS_BL_VIEW' (Cost=2770 Card=2183 Bytes=1305434) Statistics ---------------------- 0 recursive calls 0 db block gets 29346 consistent gets 29190 physical reads 0 redo size 7328 bytes sent via SQL*Net to client 234 bytes received via SQL*Net from client 4 SQL*Net roundtrips to/from client 0 sorts (memory) 0 sorts (disk) 5 rows processed ========================================================================================================== 如上所示的EXPLAIN_PLAN是怎么显示出来的? 新手,多谢指教