查询Oracle执行的顺序

explain plan for select CFG_ID, COUNT(0) total

from LOG_FD_VIDEO_SAMPLE a

where 1 = 1

and SERVICE_TYPE = 35

and FOUND_TIME >=

to_date('2014-07-08 00:00:00', 'yyyy-MM-dd HH24:mi:ss')

and FOUND_TIME <=

to_date('2014-07-08 16:00:00', 'yyyy-MM-dd HH24:mi:ss')

AND (cfg_id in

('30811', '30812', '30813', '30814', '30815', '30816', '30817'))

GROUP BY CFG_ID;

查询执行顺序结果

select * from table(DBMS_XPLAN.display);

这个说明执行的是查询索引。