explain plan for select a.*
from fxqd_list_20131115_new_100 a
where (acct_no, oper_no, seqno, trans_amt) not in
(select acct_no, oper_no, seqno, trans_amt
from fxqd_list b
where reg_date = to_date('20131115', 'yyyymmdd'))
and list_type = '1';
------------------------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)|
------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 92 | 247K| 191 (0)|
|* 1 | FILTER | | | | |
|* 2 | TABLE ACCESS FULL | FXQD_LIST_20131115_NEW_100 | 93 | 249K| 5 (0)|
|* 3 | TABLE ACCESS BY INDEX ROWID| FXQD_LIST | 2036 | 157K| 4 (0)|
|* 4 | INDEX RANGE SCAN | FXQD_LIST_IDX_1 | 2500 | | 3 (0)|
------------------------------------------------------------------------------------------------
Predicate Information (identified by operation id):
---------------------------------------------------
1 - filter( NOT EXISTS (SELECT /*+ */ 0 FROM "FXQD_LIST" "B" WHERE
"REG_DATE"=TO_DATE(' 2013-11-15 00:00:00', 'syyyy-mm-dd hh24:mi:ss') AND
LNNVL("ACCT_NO"<>:B1) AND LNNVL("OPER_NO"<>:B2) AND LNNVL("SEQNO"<>:B3) AND
LNNVL("TRANS_AMT"<>:B4)))
2 - filter("LIST_TYPE"='1')
3 - filter(LNNVL("ACCT_NO"<>:B1) AND LNNVL("OPER_NO"<>:B2) AND LNNVL("SEQNO"<>:B3)
AND LNNVL("TRANS_AMT"<>:B4))
4 - access("REG_DATE"=TO_DATE(' 2013-11-15 00:00:00', 'syyyy-mm-dd hh24:mi:ss'))
Note
-----
- 'PLAN_TABLE' is old version
FILTER就不多讲了,遇到太多次了,直接改写
elect a.*
from fxqd_list_20131115_new_100 a left join (select acct_no, oper_no, seqno, trans_amt
from fxqd_list
where reg_date = to_date('20131115', 'yyyymmdd')) b
on a.acct_no||a.oper_no||a.seqno||a.trans_amt = b.acct_no||b.oper_no||b.seqno||b.trans_amt
where
a.list_type = '1'
and b.acct_no||b.oper_no||b.seqno||b.trans_amt is null
看下是否等价:
select a.*
from fxqd_list_20131115_new_100 a
where (acct_no, oper_no, seqno, trans_amt) not in
(select acct_no, oper_no, seqno, trans_amt
from fxqd_list b
where reg_date = to_date('20131115', 'yyyymmdd'))
and list_type = '1'
---返回3条记录
select a.*
from fxqd_list_20131115_new_100 a left join (select acct_no, oper_no, seqno, trans_amt
from fxqd_list
where reg_date = to_date('20131115', 'yyyymmdd')) b
on a.acct_no||a.oper_no||a.seqno||a.trans_amt = b.acct_no||b.oper_no||b.seqno||b.trans_amt
where
a.list_type = '1'
and b.acct_no||b.oper_no||b.seqno||b.trans_amt is null
----同样返回3条记录
select a.*
from fxqd_list_20131115_new_100 a
where (acct_no, oper_no, seqno, trans_amt) not in
(select acct_no, oper_no, seqno, trans_amt
from fxqd_list b
where reg_date = to_date('20131115', 'yyyymmdd'))
and list_type = '1'
minus
select a.*
from fxqd_list_20131115_new_100 a left join (select acct_no, oper_no, seqno, trans_amt
from fxqd_list
where reg_date = to_date('20131115', 'yyyymmdd')) b
on a.acct_no||a.oper_no||a.seqno||a.trans_amt = b.acct_no||b.oper_no||b.seqno||b.trans_amt
where
a.list_type = '1'
and b.acct_no||b.oper_no||b.seqno||b.trans_amt is null
完全等价
