用with改写优化sql之二
这是另一个网友发的sql，这个有点儿坑
SYS@netdb1(netdb61)>select l_target.*, rownum as rn
2 FROM (select l0.l0_id as l0Id,
3 l0.date1 as createDate,
4 l0.id1 as applyId,
5 bai.stitle as applyTitle,
6 bai.amt1 as applyAmt,
7 bai.rate1 as applyRatio,
8 l0.value1 as oriPri,
9 l0.value2 as leftAmt,
10 sum(case
11 when lpi.status != '1' then
12 1
13 else
14 0
15 end) as remPeriods,
16 l0.flag1 AS flag2,
17 curi.s_cnname AS name2,
18 curi.i_user_id AS sellUserId
19 from l0
20 left join lpp
21 on lpp.l0_id = l0.l0_id
22 left join lpi0 lpi
23 on lpi.id3 = lpp.id3
24 left join b_apply_info bai
25 on bai.i_id1 = l0.id1
26 left join p_borrower_product pbp0
27 on pbp0.id1 = l0.id1
28 left join p_product pp0
29 on pbp0.id2 = pp0.id2
30 INNER JOIN c_user_regist_info curi
31 ON l0.creditor_user_id = curi.i_user_id
32 where 1 = 1
33 and l0.creditor_user_id = 5263
34 and l0.status != '2'
35 AND l0.flag1 = '1'
36 and pp0.product_type = 1
37 group by l0.l0_id,
38 l0.value1,
39 l0.value2,
40 l0.id1,
41 l0.date1,
42 bai.stitle,
43 bai.amt1,
44 bai.rate1,
45 l0.flag1,
46 curi.s_cnname,
47 curi.i_user_id) l_target
48 inner join (select l2.l0_id,
49 l2.creditor_user_id,
50 lpi0.PERIOD_NUM,
51 lpi0.period_end_time
52 from l0 l2
53 left join lpp0
54 on l2.l0_id = lpp0.l0_id
55 left join lpi0 lpi0
56 on lpp0.id3 = lpi0.id3
57 left join arda0
58 on arda0.id3 = lpi0.id3
59 where l2.creditor_user_id =5263
60 and l2.status != '2'
61 and lpi0.period_start_time <= sysdate
62 and lpi0.period_end_time > sysdate
63 group by l2.l0_id,
64 lpi0.PERIOD_NUM,
65 l2.creditor_user_id,
66 lpi0.period_end_time
67 having sum(arda0.REPAYMENT_AMT) = 0 or sum(arda0.REPAYMENT_AMT) is null) l_cur
68 on l_cur.l0_id = l_target.l0Id
69 left join (select lpp0.l0_id, lpp0.status, lpp0.PERIOD
70 from lpp0
71 inner join (select l2.l0_id,
72 l2.creditor_user_id,
73 lpi0.PERIOD_NUM,
74 lpi0.period_end_time
75 from l0 l2
76 left join lpp0
77 on l2.l0_id = lpp0.l0_id
78 left join lpi0 lpi0
79 on lpp0.id3 =
80 lpi0.id3
81 left join arda0
82 on arda0.id3 =
83 lpi0.id3
84 where l2.creditor_user_id =5263
85 and l2.status != '2'
86 and lpi0.period_start_time <= sysdate
87 and lpi0.period_end_time > sysdate
88 group by l2.l0_id,
89 lpi0.PERIOD_NUM,
90 l2.creditor_user_id,
91 lpi0.period_end_time
92 having sum(arda0.REPAYMENT_AMT) = 0 or sum(arda0.REPAYMENT_AMT) is null) lc
93 on lc.l0_id = lpp0.l0_id
94 where lc.PERIOD_NUM = lpp0.PERIOD + 1) l_pre
95 on l_pre.l0_id = l_target.l0Id
96 left join (select ttla.SELLER_l0_ID,
97 count(*) t_cnt,
98 max(transferable) transferable
99 from tla_transfer_l0_apply ttla
100 where 1 = 1
101 AND ttla.SELLER_ID =5263
102 group by ttla.SELLER_l0_ID) l_tran
103 on l_tran.SELLER_l0_ID = l_target.l0Id
104 left join (select *
105 from tla_transfer_l0_apply
106 where transferable = '1') ttla1
107 on ttla1.seller_l0_id = l_target.l0Id
108 where 1 = 1
109 and (l_tran.transferable is null or l_tran.transferable != '1')
110 and applyRatio=12
111 ORDER by leftAmt desc;
步惊云 14:48:54
-----------------------------------------------------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
-----------------------------------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 2 | 594 | 15752 (3)| 00:03:10 |
| 1 | SORT ORDER BY | | 2 | 594 | 15752 (3)| 00:03:10 |
| 2 | COUNT | | | | | |
|* 3 | FILTER | | | | | |
|* 4 | HASH JOIN OUTER | | 2 | 594 | 15751 (3)| 00:03:10 |
|* 5 | HASH JOIN OUTER | | 2 | 562 | 15734 (3)| 00:03:09 |
|* 6 | HASH JOIN OUTER | | 2 | 536 | 7909 (3)| 00:01:35 |
| 7 | NESTED LOOPS | | 2 | 504 | 7893 (3)| 00:01:35 |
| 8 | VIEW | | 1 | 13 | 4152 (3)| 00:00:50 |
|* 9 | FILTER | | | | | |
| 10 | HASH GROUP BY | | 1 | 125 | 4152 (3)| 00:00:50 |
|* 11 | HASH JOIN OUTER | | 5494 | 670K| 4151 (3)| 00:00:50 |
| 12 | NESTED LOOPS | | | | | |
| 13 | NESTED LOOPS | | 3010 | 291K| 3896 (3)| 00:00:47 |
|* 14 | HASH JOIN | | 110K| 5949K| 3875 (3)| 00:00:47 |
|* 15 | TABLE ACCESS FULL | l0 | 278 | 8062 | 168 (2)| 00:00:03 |
| 16 | TABLE ACCESS FULL | lpp | 1530K| 37M| 3691 (2)| 00:00:45 |
|* 17 | INDEX UNIQUE SCAN | PK_lpi0 | 1 | | 0 (0)| 00:00:01 |
|* 18 | TABLE ACCESS BY INDEX ROWID | lpi0 | 1 | 44 | 0 (0)| 00:00:01 |
| 19 | TABLE ACCESS FULL | arda0 | 131K| 3331K| 253 (2)| 00:00:04 |
| 20 | VIEW PUSHED PREDICATE | | 1 | 239 | 3741 (2)| 00:00:45 |
| 21 | SORT GROUP BY | | 1 | 225 | 3741 (2)| 00:00:45 |
| 22 | NESTED LOOPS OUTER | | 1 | 225 | 3741 (2)| 00:00:45 |
|* 23 | HASH JOIN OUTER | | 1 | 209 | 3741 (2)| 00:00:45 |
| 24 | NESTED LOOPS | | | | | |
| 25 | NESTED LOOPS | | 1 | 183 | 79 (3)| 00:00:01 |
| 26 | NESTED LOOPS | | 4 | 628 | 79 (3)| 00:00:01 |
| 27 | NESTED LOOPS | | 1 | 131 | 3 (0)| 00:00:01 |
| 28 | NESTED LOOPS | | 1 | 95 | 2 (0)| 00:00:01 |
| 29 | TABLE ACCESS BY INDEX ROWID| C_USER_REGIST_INFO | 1 | 15 | 2 (0)| 00:00:01 |
|* 30 | INDEX UNIQUE SCAN | PK_C_USER_REGIST_INFO | 1 | | 1 (0)| 00:00:01 |
|* 31 | TABLE ACCESS BY INDEX ROWID| l0 | 1 | 80 | 0 (0)| 00:00:01 |
|* 32 | INDEX UNIQUE SCAN | PK_l0 | 1 | | 0 (0)| 00:00:01 |
|* 33 | TABLE ACCESS BY INDEX ROWID | B_APPLY_INFO | 203 | 7308 | 1 (0)| 00:00:01 |
|* 34 | INDEX UNIQUE SCAN | PK_B_APPLY_INFO | 1 | | 0 (0)| 00:00:01 |
|* 35 | TABLE ACCESS FULL | P_BORROWER_PRODUCT | 4 | 104 | 76 (3)| 00:00:01 |
|* 36 | INDEX UNIQUE SCAN | PK_P_PRODUCT | 1 | | 0 (0)| 00:00:01 |
|* 37 | TABLE ACCESS BY INDEX ROWID | P_PRODUCT | 1 | 26 | 0 (0)| 00:00:01 |
|* 38 | TABLE ACCESS FULL | lpp | 399 | 10374 | 3662 (2)| 00:00:44 |
| 39 | TABLE ACCESS BY INDEX ROWID | lpi0 | 1 | 16 | 0 (0)| 00:00:01 |
|* 40 | INDEX UNIQUE SCAN | PK_lpi0 | 1 | | 0 (0)| 00:00:01 |
|* 41 | TABLE ACCESS FULL | TLA_TRANSFER_l0_APPLY | 2 | 32 | 15 (0)| 00:00:01 |
| 42 | VIEW | | 4 | 52 | 7825 (3)| 00:01:34 |
|* 43 | HASH JOIN | | 4 | 208 | 7825 (3)| 00:01:34 |
| 44 | VIEW | | 1 | 26 | 4152 (3)| 00:00:50 |
|* 45 | FILTER | | | | | |
| 46 | HASH GROUP BY | | 1 | 125 | 4152 (3)| 00:00:50 |
|* 47 | HASH JOIN OUTER | | 5494 | 670K| 4151 (3)| 00:00:50 |
| 48 | NESTED LOOPS | | | | | |
| 49 | NESTED LOOPS | | 3010 | 291K| 3896 (3)| 00:00:47 |
|* 50 | HASH JOIN | | 110K| 5949K| 3875 (3)| 00:00:47 |
|* 51 | TABLE ACCESS FULL | l0 | 278 | 8062 | 168 (2)| 00:00:03 |
| 52 | TABLE ACCESS FULL | lpp | 1530K| 37M| 3691 (2)| 00:00:45 |
|* 53 | INDEX UNIQUE SCAN | PK_lpi0 | 1 | | 0 (0)| 00:00:01 |
|* 54 | TABLE ACCESS BY INDEX ROWID | lpi0 | 1 | 44 | 0 (0)| 00:00:01 |
| 55 | TABLE ACCESS FULL | arda0 | 131K| 3331K| 253 (2)| 00:00:04 |
| 56 | TABLE ACCESS FULL | lpp | 1530K| 37M| 3657 (2)| 00:00:44 |
| 57 | VIEW | | 86 | 1376 | 16 (7)| 00:00:01 |
| 58 | HASH GROUP BY | | 86 | 2494 | 16 (7)| 00:00:01 |
|* 59 | TABLE ACCESS FULL | TLA_TRANSFER_l0_APPLY | 86 | 2494 | 15 (0)| 00:00:01 |
-----------------------------------------------------------------------------------------------------------------------------
Predicate Information (identified by operation id):
---------------------------------------------------
3 - filter("L_TRAN"."TRANSFERABLE" IS NULL OR "L_TRAN"."TRANSFERABLE"<>'1')
4 - access("L_TRAN"."SELLER_l0_ID"(+)="L_TARGET"."l0ID")
5 - access("L_PRE"."l0_ID"(+)="L_TARGET"."l0ID")
6 - access("TLA_TRANSFER_l0_APPLY"."SELLER_l0_ID"(+)="L_TARGET"."l0ID")
9 - filter(SUM("ARDA0"."REPAYMENT_AMT")=0 OR SUM("ARDA0"."REPAYMENT_AMT") IS NULL)
11 - access("ARDA0"."id3"(+)="LPI0"."id3")
14 - access("L2"."l0_ID"="LPP0"."l0_ID")
15 - filter("L2"."CREDITOR_USER_ID"=5263 AND "L2"."STATUS"<>'2')
17 - access("LPP0"."id3"="LPI0"."id3")
18 - filter("LPI0"."PERIOD_START_TIME"<=SYSDATE@! AND "LPI0"."PERIOD_END_TIME">SYSDATE@!)
23 - access("LPP"."l0_ID"(+)="L0"."l0_ID")
30 - access("CURI"."I_USER_ID"=5263)
31 - filter("L0"."CREDITOR_USER_ID"=5263 AND "L0"."flag1"='1' AND "L0"."STATUS"<>'2')
32 - access("L0"."l0_ID"="L_CUR"."l0_ID")
33 - filter("BAI"."rate1"=12)
34 - access("BAI"."I_id1"="L0"."id1")
35 - filter("PBP0"."id1" IS NOT NULL AND "PBP0"."id1"="L0"."id1")
36 - access("PBP0"."id2"="PP0"."id2")
37 - filter("PP0"."PRODUCT_TYPE"=1)
38 - filter("LPP"."l0_ID"(+)="L_CUR"."l0_ID")
40 - access("LPI"."id3"(+)="LPP"."id3")
41 - filter("TRANSFERABLE"(+)='1')
43 - access("LC"."PERIOD_NUM"="LPP0"."PERIOD"+1 AND "LC"."l0_ID"="LPP0"."l0_ID")
45 - filter(SUM("ARDA0"."REPAYMENT_AMT")=0 OR SUM("ARDA0"."REPAYMENT_AMT") IS NULL)
47 - access("ARDA0"."id3"(+)="LPI0"."id3")
50 - access("L2"."l0_ID"="LPP0"."l0_ID")
51 - filter("L2"."CREDITOR_USER_ID"=5263 AND "L2"."STATUS"<>'2')
53 - access("LPP0"."id3"="LPI0"."id3")
54 - filter("LPI0"."PERIOD_START_TIME"<=SYSDATE@! AND "LPI0"."PERIOD_END_TIME">SYSDATE@!)
59 - filter("TTLA"."SELLER_ID"=5263)
Note
-----
- dynamic sampling used for this statement (level=2)
Note
-----
- dynamic sampling used for this statement (level=2)
Statistics
----------------------------------------------------------
541 recursive calls
0 db block gets
2088099 consistent gets
234 physical reads
2264 redo size
11549 bytes sent via SQL*Net to client
619 bytes received via SQL*Net from client
11 SQL*Net roundtrips to/from client
359 sorts (memory)
0 sorts (disk)
147 rows processed
14:51:34
嗯
在lpp表的l0_ID 搞个索引。执行时间大约4秒多
大家仔细比对inner join 与left join里的部分sql，里面实际上是同样的一段语句，只是开发写join的时候同一个表的列一会儿放在前面一会儿放在后面，让我挨个的重写后才能实际确认，太坑了。ok 牢骚发完了，改写后的如下
WITH l_cur AS
(SELECT l2.l0_id,
l2.creditor_user_id,
lpi0.period_num,
lpi0.period_end_time
FROM l0 l2
LEFT JOIN lpp0
ON l2.l0_id = lpp0.l0_id
LEFT JOIN lpi0 lpi0
ON lpp0.id3 = lpi0.id3
LEFT JOIN arda0
ON arda0.id3 = lpi0.id3
WHERE l2.creditor_user_id = 5263
AND l2.status != '2'
AND lpi0.period_start_time <= SYSDATE
AND lpi0.period_end_time > SYSDATE
GROUP BY l2.l0_id,
lpi0.period_num,
l2.creditor_user_id,
lpi0.period_end_time
HAVING SUM(arda0.repayment_amt) = 0 OR SUM(arda0.repayment_amt) IS NULL)
SELECT l_target.*, rownum AS rn
FROM (SELECT l0.l0_id AS l0id,
l0.date1 AS createdate,
l0.id1 AS applyid,
bai.stitle AS applytitle,
bai.amt1 AS applyamt,
bai.rate1 AS applyratio,
l0.value1 AS oripri,
l0.value2 AS leftamt,
SUM(CASE
WHEN lpi.status != '1' THEN
1
ELSE
0
END) AS remperiods,
l0.flag1 AS flag2,
curi.s_cnname AS name2,
curi.i_user_id AS selluserid
FROM l0
LEFT JOIN lpp
ON lpp.l0_id = l0.l0_id
LEFT JOIN lpi0 lpi
ON lpi.id3 = lpp.id3
LEFT JOIN b_apply_info bai
ON bai.i_id1 = l0.id1
LEFT JOIN p_borrower_product pbp0
ON pbp0.id1 = l0.id1
LEFT JOIN p_product pp0
ON pbp0.id2 = pp0.id2
INNER JOIN c_user_regist_info curi
ON l0.creditor_user_id = curi.i_user_id
WHERE 1 = 1
AND l0.creditor_user_id = 5263
AND l0.status != '2'
AND l0.flag1 = '1'
AND pp0.product_type = 1
GROUP BY l0.l0_id,
l0.value1,
l0.value2,
l0.id1,
l0.date1,
bai.stitle,
bai.amt1,
bai.rate1,
l0.flag1,
curi.s_cnname,
curi.i_user_id) l_target
INNER JOIN l_cur ON l_cur.l0_id = l_target.l0id
LEFT JOIN (SELECT lpp0.l0_id, lpp0.status, lpp0.period
FROM lpp0
INNER JOIN l_cur lc
ON lc.l0_id = lpp0.l0_id
WHERE lc.period_num = lpp0.period + 1) l_pre
ON l_pre.l0_id = l_target.l0id
LEFT JOIN (SELECT ttla.seller_l0_id,
COUNT(*) t_cnt,
MAX(transferable) transferable
FROM tla_transfer_l0_apply ttla
WHERE 1 = 1
AND ttla.seller_id = 5263
GROUP BY ttla.seller_l0_id) l_tran
ON l_tran.seller_l0_id = l_target.l0id
LEFT JOIN (SELECT * FROM tla_transfer_l0_apply WHERE transferable = '1') ttla1
ON ttla1.seller_l0_id = l_target.l0id
WHERE 1 = 1
AND (l_tran.transferable IS NULL OR l_tran.transferable != '1')
AND applyratio = 12
ORDER BY leftamt DESC;
这个语句优化的效果不算大，只是从4秒到了2秒以内。勉强也算一次优化吧