Where절에 사용하는 인덱스
DB CAFE
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- DBA { Oracle DBA 명령어 > DBA 초급 과정 > DBA 고급 과정 }
- 튜닝 { 오라클 튜닝 목록 }
- 모델링 { 데이터 모델링 가이드 }
- sys.col_usage$;
- sys.ind_usage$;
select *
from sys.col_usage$;
select *
from sys.ind_usage$;
select *
from dba_objects
where owner = 'TEST'
and object_name = 'T1';
select *
from sys.col_usage$
where obj#= 493734;
1 user 별[편집]
select a.username, o.name oname, c.name cname,
u.equality_preds,
u.equijoin_preds, u.nonequijoin_preds,
u.range_preds, u.like_preds, u.null_preds,
to_char(u.timestamp,'yyyy-mm-dd hh24:mi:ss') as when
from sys.col_usage$ u
, sys.obj$ o
, sys.col$ c
, all_users a
where a.user_id = o.owner#
and u.obj# = o.obj#
and u.obj# = c.obj#
and u.intcol# = c.col#
and a.username = 'TEST'
order by a.username, o.name, c.name
;
2 User , table 별[편집]
select a.username, o.name oname, c.name cname,
u.equality_preds,
u.equijoin_preds, u.nonequijoin_preds,
u.range_preds, u.like_preds, u.null_preds,
to_char(u.timestamp,'yyyy-mm-dd hh24:mi:ss') as when
from sys.col_usage$ u
, sys.obj$ o
, sys.col$ c
, all_users a
, dba_objects do
where a.user_id = o.owner#
and u.obj# = o.obj#
and u.obj# = c.obj#
and u.intcol# = c.col#
and a.username = 'TEST'
and a.username = do.owner
and do.object_name = 'T1'
and DO.OBJECT_ID = O.OBJ#
order by a.username, o.name, c.name
;