Rewrite a query by Hints
Hi Team,
Actually here my issue is when we are generating report it is hitting the base table and showing the report but it is a improper data for proper data it should hit the M. views of that base table. when we /*REWRITE*/ the query in the back end then it showing correct data now we have to implement same /*REWRITE*/ in OBIEE
previous query SELECT T287030.FISCAL_MONTH_TXT AS c1
now we have to implement the query like this SELECT /*+REWRITE*/ T287030.FISCAL_MONTH_TXT AS c1
in OBIEE by useing HINTS please help me... if you did not under stand the issue if want i will Elaborate
thanks,
now we have to implement the query like this SELECT /*+REWRITE*/ T287030.FISCAL_MONTH_TXT AS c1 Go to physical layer of RPD and double click the table that you want to add hints too,it opens up the properties window at the bottom just below the cache section there is hint section ther you can add your hint i.e. REWRITE this way then you can achieve what you desire.
For more info http://www.business-intelligence-quotient.com/?p=119
Please close your previous posts too presentation variables
UPDATED POST
Then it should not effect for the other reports it should effect only for the particular report means what we have to do.This is not possible in OBIEE,once hint is used it affects all the reports that uses this table.Its standard behaviour.
UPDATED POST-2
No other methodology to do this....i will suggest you to go and use the hints seeing in the above blog for that table.Let the other reports also hit this hints it wont be a problem nor it causes any performance issues.This is the only option left.
hope answered.Award points and close the threads
Cheers,
KK
Edited by: Kranthi.K on May 25, 2011 10:05 PM
Edited by: Kranthi.K on May 26, 2011 2:57 AM
Similar Messages
-
Hello
I have one query taking time to fetch the records. Table contains just 40,000 thousands records but lots of case statement in the query, I just remove lots of case statement there are lot more...
Can you please help me out to rewrite the query to fetch the records faster. Also Right now there are no indexes on the table....
SELECT O.cn,
O.BEN_LAST_NAME,
O.BEN_FIRST_NAME,
O.BEN_MI,
O.SSN,
O.DOB,
O.SEX,
CASE
WHEN O.SEX = 'F' AND O.AGE BETWEEN 00 AND 34 THEN
1
ELSE
0
END AS AGE_GROUP0_34_F,
CASE
WHEN O.SEX = 'F' AND O.AGE BETWEEN 35 AND 44 THEN
1
ELSE
0
END AS AGE_GROUP35_44_F,
CASE
WHEN O.SEX = 'F' AND O.AGE BETWEEN 45 AND 54 THEN
1
ELSE
0
END AS AGE_GROUP45_54_F,
CASE
WHEN O.SEX = 'F' AND O.AGE BETWEEN 55 AND 59 THEN
1
ELSE
0
END AS AGE_GROUP55_59_F,
CASE
WHEN O.SEX = 'F' AND O.AGE BETWEEN 60 AND 64 THEN
1
ELSE
0
END AS AGE_GROUP60_64_F,
CASE
WHEN O.SEX = 'F' AND O.AGE BETWEEN 65 AND 69 THEN
1
ELSE
0
END AS AGE_GROUP65_69_F,
CASE
WHEN O.SEX = 'F' AND O.AGE BETWEEN 70 AND 74 THEN
1
ELSE
0
END AS AGE_GROUP70_74_F,
CASE
WHEN O.SEX = 'F' AND O.AGE BETWEEN 75 AND 79 THEN
1
ELSE
0
END AS AGE_GROUP75_79_F,
CASE
WHEN O.SEX = 'F' AND O.AGE BETWEEN 80 AND 84 THEN
1
ELSE
0
END AS AGE_GROUP80_84_F,
CASE
WHEN O.SEX = 'F' AND O.AGE BETWEEN 85 AND 89 THEN
1
ELSE
0
END AS AGE_GROUP85_89_F,
CASE
WHEN O.SEX = 'F' AND O.AGE BETWEEN 90 AND 94 THEN
1
ELSE
0
END AS AGE_GROUP90_94_F,
CASE
WHEN O.SEX = 'F' AND O.AGE BETWEEN 95 AND 00 THEN
1
ELSE
0
END AS AGE_GROUP95_GT_F,
CASE
WHEN O.SEX = 'M' AND O.AGE BETWEEN 00 AND 34 THEN
1
ELSE
0
END AS AGE_GROUP0_34_M,
CASE
WHEN O.SEX = 'M' AND O.AGE BETWEEN 35 AND 44 THEN
1
ELSE
0
END AS AGE_GROUP35_44_M,
CASE
WHEN O.SEX = 'M' AND O.AGE BETWEEN 45 AND 54 THEN
1
ELSE
0
END AS AGE_GROUP45_54_M,
CASE
WHEN O.SEX = 'M' AND O.AGE BETWEEN 45 AND 59 THEN
1
ELSE
0
END AS AGE_GROUP55_59_M,
CASE
WHEN O.SEX = 'M' AND O.AGE BETWEEN 60 AND 64 THEN
1
ELSE
0
END AS AGE_GROUP60_64_M,
CASE
WHEN O.SEX = 'M' AND O.AGE BETWEEN 65 AND 69 THEN
1
ELSE
0
END AS AGE_GROUP65_69_M,
CASE
WHEN O.SEX = 'M' AND O.AGE BETWEEN 70 AND 74 THEN
1
ELSE
0
END AS AGE_GROUP70_74_M,
CASE
WHEN O.SEX = 'M' AND O.AGE BETWEEN 75 AND 79 THEN
1
ELSE
0
END AS AGE_GROUP75_79_M,
CASE
WHEN O.SEX = 'M' AND O.AGE BETWEEN 80 AND 84 THEN
1
ELSE
0
END AS AGE_GROUP80_84_M,
CASE
WHEN O.SEX = 'M' AND O.AGE BETWEEN 85 AND 89 THEN
1
ELSE
0
END AS AGE_GROUP85_89_M,
CASE
WHEN O.SEX = 'M' AND O.AGE BETWEEN 90 AND 94 THEN
1
ELSE
0
END AS AGE_GROUP90_94_M,
CASE
WHEN O.SEX = 'M' AND O.AGE BETWEEN 95 AND 00 THEN
1
ELSE
0
END AS AGE_GROUP95_GT_M,
O.YEAR,
CASE WHEN EXISTS (SELECT m1.hcc_model_category1 FROM HCC_MODEL_DIAGNOSIS M1 , HCC_MODEL_DIAGNOSIS_MAPPING HM
,mor222 m2 WHERE m1.map_id = hm.map_id_ref
AND m2.YEAR = hm.YEAR
AND o.cn = m2.cn
AND o.YEAR = hm.YEAR
AND m1.hcc_model_category1 = 1
AND m2.diag_code = m1.icd9cmscode) THEN 1 ELSE 0 END AS DISEASE_COEF_HCC1,
CASE WHEN EXISTS (SELECT m1.hcc_model_category1 FROM HCC_MODEL_DIAGNOSIS M1 , HCC_MODEL_DIAGNOSIS_MAPPING HM
,mor222 m2 WHERE m1.map_id = hm.map_id_ref
AND m2.YEAR = hm.YEAR
AND o.cn = m2.cn
AND o.YEAR = hm.YEAR
AND m1.hcc_model_category1 = 2
AND m2.diag_code = m1.icd9cmscode) THEN 1 ELSE 0 END AS DISEASE_COEF_HCC2,
CASE WHEN EXISTS (SELECT m1.hcc_model_category1 FROM HCC_MODEL_DIAGNOSIS M1 , HCC_MODEL_DIAGNOSIS_MAPPING HM
,mor222 m2 WHERE m1.map_id = hm.map_id_ref
AND m2.YEAR = hm.YEAR
AND o.cn = m2.cn
AND o.YEAR = hm.YEAR
AND m1.hcc_model_category1 = 5
AND m2.diag_code = m1.icd9cmscode) THEN 1 ELSE 0 END AS DISEASE_COEF_HCC5,
CASE WHEN EXISTS (SELECT m1.hcc_model_category1 FROM HCC_MODEL_DIAGNOSIS M1 , HCC_MODEL_DIAGNOSIS_MAPPING HM
,mor222 m2 WHERE m1.map_id = hm.map_id_ref
AND m2.YEAR = hm.YEAR
AND o.cn = m2.cn
AND o.YEAR = hm.YEAR
AND m1.hcc_model_category1 = 7
AND m2.diag_code = m1.icd9cmscode) THEN 1 ELSE 0 END AS DISEASE_COEF_HCC7,
CASE WHEN EXISTS (SELECT m1.hcc_model_category1 FROM HCC_MODEL_DIAGNOSIS M1 , HCC_MODEL_DIAGNOSIS_MAPPING HM
,mor222 m2 WHERE m1.map_id = hm.map_id_ref
AND m2.YEAR = hm.YEAR
AND o.cn = m2.cn
AND o.YEAR = hm.YEAR
AND m1.hcc_model_category1 = 8
AND m2.diag_code = m1.icd9cmscode) THEN 1 ELSE 0 END AS DISEASE_COEF_HCC8
FROM (SELECT T.cn,
T.BEN_LAST_NAME,
T.BEN_FIRST_NAME,
T.BEN_MI,
T.SSN,
TO_DATE(T.DOB, 'YYYYMMDD') AS DOB,
T.SEX,
TRUNC(MONTHS_BETWEEN(TO_DATE('01/01/' || T.YEAR, 'MM/DD/YYYY'),
TO_DATE(T.DOB, 'YYYYMMDD')) / 12) AS AGE,
T.YEAR
FROM mor111 T ) O Thanks in advance!
Kind regards,
NikOk, so I am going to be a little bit kinder then your first reply, but not much.
From what can tell you are doing medical management and are trying to select by AGE/GENDER CELLS and this is common when trying to deal with RBRVS.
This is by far some of the worst sql I have ever seen, sorry but it just is.
So please report this either as a new post or as a reply and:
1. At least post the table definitions and if you can some sample data.
2. Get rid of almost all the case selectors.
3. Describe the output you need.
As it is this is unreadable.
After that we can talk more.
Edited by: FlyingGuy on Oct 11, 2011 5:13 PM -
Help to rewrite the query --performance issue
Hi ,
Please help to rewrite the query since it's performance is not good.Especially second inline query(CASE statements are therein select caluse ..)is taking more cost.
Database Oracle Database 10g Enterprise Edition Release 10.2.0.2.0 - 64bi
SELECT *
FROM
(SELECT q.*,
COUNT(*) OVER() AS record_count,
ROWNUM AS row_num
FROM
(SELECT ExName.examiner_code,
examiner_name,
:v_year,
:v_month,
count_fb,
NVL(count_entered_fb, 0) count_entered_fb,
NVL(count_sent_fb, 0) count_sent_fb,
NVL(count_edited_fb, 0) count_edited_fb,
NVL(count_complete_fb, 0) count_complete_fb,
NVL(count_withibcardiff_fb, 0) count_withibcardiff_fb
FROM
(SELECT examiner_code,
COUNT(*) AS count_fb
FROM
(SELECT
examiner_code,
paper_code,
assessment_school
FROM
( SELECT DISTINCT ce.examiner_code,
ce.paper_code,
ce.assessment_school
FROM
(SELECT
DISTINCT assessment_school,
paper_code,
examiner_code
FROM candidate_examiner_allocation cea
WHERE cea.element = 'Moderation of IA'
AND cea.year = :v_year
AND cea.month = :v_month
) ce,
subject_group sg,
subject_component sc
WHERE (:v_padded_examiner_code IS NULL
OR ce.examiner_code = :v_padded_examiner_code)
AND (:v_subject_group IS NULL
OR sg.group_number = :v_subject_group)
AND sg.year = :v_year
AND sg.month = :v_month
AND sc.year = :v_year
AND sc.month = :v_month
AND sc.paper_code = ce.paper_code
AND sc.subject = sg.subject
AND sc.lvl = sg.lvl
AND (:v_subject IS NULL
OR sc.subject = :v_subject)
AND (:v_lvl IS NULL
OR sc.lvl = :v_lvl)
) ea
GROUP BY examiner_code
) ExName,
(SELECT examiner_code,
COUNT(
CASE
WHEN UPPER(wfi.status) = 'ENTERED'
THEN 1
ELSE NULL
END) AS count_entered_fb,
COUNT(
CASE
WHEN UPPER(wfi.status) = 'SENT'
THEN 1
ELSE NULL
END) AS count_sent_fb,
COUNT(
CASE
WHEN UPPER(wfi.status) = 'EDITED'
THEN 1
ELSE NULL
END) AS count_edited_fb,
COUNT(
CASE
WHEN UPPER(wfi.status) = 'COMPLETE'
THEN 1
ELSE NULL
END) AS count_complete_fb,
COUNT(
CASE
WHEN UPPER(wfi.status) = 'WITH IBCARDIFF'
THEN 1
ELSE NULL
END) AS count_withibcardiff_fb
FROM ia_instances ia1,
workflow_instance wfi
WHERE wfi.instance_id = ia1.workflow_instance_id
AND ia1.year = :v_year
AND ia1.month = :v_month
GROUP BY ia1.year,
ia1.month,
examiner_code
) iaF,
(SELECT person_code,
title
|| ' '
|| firstname
|| ' '
|| lastname AS examiner_name
FROM person
WHERE :v_examiner_name IS NULL
OR UPPER(title
|| ' '
|| firstname
|| ' '
|| lastname) LIKE :v_search_examiner_name
) P
WHERE ExName.examiner_code = iaF.examiner_code (+)
AND ExName.examiner_code = p.person_code
ORDER BY ExName.examiner_code
) q
) rc
WHERE row_num >= :v_start_row
AND row_num <= (:v_start_row+(:v_max_row-1));explain plan
line 1: SQLPLUS Command Skipped: set linesize 130
line 2: SQLPLUS Command Skipped: set pagesize 0
PLAN_TABLE_OUTPUT
Plan hash value: 1581970599
| Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 1 | 276 | | 2187 (6)| 00:00:34 |
|* 1 | FILTER | | | | | | |
|* 2 | VIEW | | 1 | 276 | | 2187 (6)| 00:00:34 |
| 3 | WINDOW BUFFER | | 1 | 250 | | 2187 (6)| 00:00:34 |
| 4 | COUNT | | | | | | |
| 5 | VIEW | | 1 | 250 | | 2187 (6)| 00:00:34 |
| 6 | SORT ORDER BY | | 1 | 119 | | 2187 (6)| 00:00:34 |
| 7 | NESTED LOOPS | | 1 | 119 | | 2186 (6)| 00:00:34 |
|* 8 | HASH JOIN OUTER | | 1 | 92 | | 2185 (6)| 00:00:34 |
| 9 | VIEW | | 1 | 20 | | 51 (4)| 00:00:01 |
| 10 | SORT GROUP BY | | 1 | 7 | | 51 (4)| 00:00:01 |
| 11 | VIEW | | 1 | 7 | | 51 (4)| 00:00:01 |
| 12 | SORT UNIQUE | | 1 | 127 | | 51 (4)| 00:00:01 |
| 13 | NESTED LOOPS | | 1 | 127 | | 50 (2)| 00:00:01 |
|* 14 | HASH JOIN | | 1 | 68 | | 44 (3)| 00:00:01 |
|* 15 | TABLE ACCESS BY INDEX ROWID| SUBJECT_COMPONENT | 13 | 520 | | 40 (0)| 00:00:01 |
|* 16 | INDEX RANGE SCAN | SUBJECT_COMPONENT_ASSESS_TYPE | 1059 | | | 9 (0)| 00:00:01 |
|* 17 | INDEX RANGE SCAN | SUBJECT_GROUP_PK | 41 | 1148 | | 3 (0)| 00:00:01 |
|* 18 | INDEX RANGE SCAN | CEA_AUTOMATIC_ALLOCATION_STATS | 5 | 295 | | 6 (0)| 00:00:01 |
| 19 | VIEW | | 679 | 48888 | | 2133 (6)| 00:00:33 |
| 20 | SORT GROUP BY | | 679 | 25123 | | 2133 (6)| 00:00:33 |
|* 21 | HASH JOIN | | 52408 | 1893K| 1744K| 2126 (6)| 00:00:33 |
| 22 | TABLE ACCESS BY INDEX ROWID | IA_INSTANCES | 52408 | 1125K| | 688 (1)| 00:00:11 |
|* 23 | INDEX RANGE SCAN | IND_IA_INSTANCES | 49077 | | | 137 (2)| 00:00:03 |
| 24 | TABLE ACCESS FULL | WORKFLOW_INSTANCE | 1075K| 15M| | 960 (7)| 00:00:15 |
|* 25 | TABLE ACCESS BY INDEX ROWID | PERSON | 1 | 27 | | 1 (0)| 00:00:01 |
|* 26 | INDEX UNIQUE SCAN | PERSON_PK | 1 | | | 0 (0)| 00:00:01 |
Predicate Information (identified by operation id):
1 - filter(TO_NUMBER(:V_START_ROW)<=TO_NUMBER(:V_START_ROW)+(TO_NUMBER(:V_MAX_ROW)-1))
2 - filter("ROW_NUM">=TO_NUMBER(:V_START_ROW) AND "ROW_NUM"<=TO_NUMBER(:V_START_ROW)+(TO_NUMBER(:V_MAX_ROW)-1))
8 - access("EXNAME"."EXAMINER_CODE"="IAF"."EXAMINER_CODE"(+))
14 - access("SC"."SUBJECT"="SG"."SUBJECT" AND "SC"."LVL"="SG"."LVL")
15 - filter((:V_SUBJECT IS NULL OR "SC"."SUBJECT"=:V_SUBJECT) AND ("SC"."LVL"=:V_LVL OR :V_LVL IS NULL))
16 - access("SC"."YEAR"=TO_NUMBER(:V_YEAR) AND "SC"."MONTH"=:V_MONTH)
17 - access("SG"."YEAR"=TO_NUMBER(:V_YEAR) AND "SG"."MONTH"=:V_MONTH)
filter(:V_SUBJECT_GROUP IS NULL OR "SG"."GROUP_NUMBER"=TO_NUMBER(:V_SUBJECT_GROUP))
18 - access("CEA"."YEAR"=TO_NUMBER(:V_YEAR) AND "CEA"."MONTH"=:V_MONTH AND "SC"."PAPER_CODE"="PAPER_CODE" AND
"CEA"."ELEMENT"='Moderation of IA')
filter("CEA"."ELEMENT"='Moderation of IA' AND (:V_PADDED_EXAMINER_CODE IS NULL OR
"EXAMINER_CODE"=:V_PADDED_EXAMINER_CODE))
21 - access("WFI"."INSTANCE_ID"="IA1"."WORKFLOW_INSTANCE_ID")
23 - access("IA1"."YEAR"=TO_NUMBER(:V_YEAR) AND "IA1"."MONTH"=:V_MONTH)
25 - filter(:V_EXAMINER_NAME IS NULL OR UPPER("TITLE"||' '||"FIRSTNAME"||' '||"LASTNAME") LIKE :V_SEARCH_EXAMINER_NAME)
26 - access("EXNAME"."EXAMINER_CODE"="PERSON_CODE")
53 rows selectedHi,
please find the below rigjt explan paln.
PLAN_TABLE_OUTPUT
SQL_ID 2ct41vyyzqyh7, child number 0
SELECT * FROM (SELECT q.*, COUNT(*) OVER() AS record_count, ROWNUM AS row_num FROM (SELECT
ExName.examiner_code, examiner_name, :v_year, :v_month, count_fb, NVL(count_entered_fb,
0) count_entered_fb, NVL(count_sent_fb, 0) count_sent_fb, NVL(count_edited_fb, 0) count_edited_fb,
NVL(count_complete_fb, 0) count_complete_fb, NVL(count_withibcardiff_fb, 0) count_withibcardiff_fb FROM
(SELECT examiner_code, COUNT(*) AS count_fb FROM (SELECT
examiner_code, paper_code, assessment_school FROM ( SELECT DISTINCT
ce.examiner_code, ce.paper_code, ce.assessment_school FROM (SELECT
DISTINCT assessment_school,
paper_code, examiner
Plan hash value: 651311258
| Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | | | | 2785 (100)| |
|* 1 | FILTER | | | | | | |
|* 2 | VIEW | | 4 | 1104 | | 2785 (7)| 00:00:43 |
| 3 | WINDOW BUFFER | | 4 | 1000 | | 2785 (7)| 00:00:43 |
| 4 | COUNT | | | | | | |
| 5 | VIEW | | 4 | 1000 | | 2785 (7)| 00:00:43 |
| 6 | NESTED LOOPS | | 4 | 476 | | 2785 (7)| 00:00:43 |
| 7 | MERGE JOIN OUTER | | 4 | 368 | | 2781 (7)| 00:00:43 |
| 8 | VIEW | | 4 | 80 | | 72 (3)| 00:00:02 |
| 9 | SORT GROUP BY | | 4 | 28 | | 72 (3)| 00:00:02 |
| 10 | VIEW | | 4 | 28 | | 72 (3)| 00:00:02 |
| 11 | SORT UNIQUE | | 4 | 508 | | 72 (3)| 00:00:02 |
| 12 | NESTED LOOPS | | 4 | 508 | | 71 (2)| 00:00:02 |
|* 13 | HASH JOIN | | 1 | 68 | | 44 (3)| 00:00:01 |
|* 14 | TABLE ACCESS BY INDEX ROWID| SUBJECT_COMPONENT | 13 | 520 | | 40 (0)| 00:00:01 |
|* 15 | INDEX RANGE SCAN | SUBJECT_COMPONENT_ASSESS_TYPE | 1059 | | | 9 (0)| 00:00:01 |
|* 16 | INDEX RANGE SCAN | SUBJECT_GROUP_PK | 41 | 1148 | | 3 (0)| 00:00:01 |
|* 17 | INDEX RANGE SCAN | CEA_AUTOMATIC_ALLOCATION_STATS | 30 | 1770 | | 27 (0)| 00:00:01 |
|* 18 | SORT JOIN | | 576 | 41472 | | 2709 (7)| 00:00:42 |
| 19 | VIEW | | 576 | 41472 | | 2708 (7)| 00:00:42 |
| 20 | SORT GROUP BY | | 576 | 21312 | | 2708 (7)| 00:00:42 |
|* 21 | HASH JOIN | | 52408 | 1893K| 1744K| 2701 (7)| 00:00:41 |
|* 22 | TABLE ACCESS FULL | IA_INSTANCES | 52408 | 1125K| | 1263 (6)| 00:00:20 |
| 23 | TABLE ACCESS FULL | WORKFLOW_INSTANCE | 1075K| 15M| | 960 (7)| 00:00:15 |
|* 24 | TABLE ACCESS BY INDEX ROWID | PERSON | 1 | 27 | | 1 (0)| 00:00:01 |
|* 25 | INDEX UNIQUE SCAN | PERSON_PK | 1 | | | 0 (0)| |
Predicate Information (identified by operation id):
1 - filter(TO_NUMBER(:V_START_ROW)<=TO_NUMBER(:V_START_ROW)+(TO_NUMBER(:V_MAX_ROW)-1))
2 - filter(("ROW_NUM">=TO_NUMBER(:V_START_ROW) AND "ROW_NUM"<=TO_NUMBER(:V_START_ROW)+(TO_NUMBER(:V_MAX_ROW)-1)))
13 - access("SC"."SUBJECT"="SG"."SUBJECT" AND "SC"."LVL"="SG"."LVL")
14 - filter(((:V_SUBJECT IS NULL OR "SC"."SUBJECT"=:V_SUBJECT) AND ("SC"."LVL"=:V_LVL OR :V_LVL IS NULL)))
15 - access("SC"."YEAR"=TO_NUMBER(:V_YEAR) AND "SC"."MONTH"=:V_MONTH)
16 - access("SG"."YEAR"=TO_NUMBER(:V_YEAR) AND "SG"."MONTH"=:V_MONTH)
filter((:V_SUBJECT_GROUP IS NULL OR "SG"."GROUP_NUMBER"=TO_NUMBER(:V_SUBJECT_GROUP)))
17 - access("CEA"."YEAR"=TO_NUMBER(:V_YEAR) AND "CEA"."MONTH"=:V_MONTH AND "SC"."PAPER_CODE"="PAPER_CODE" AND
"CEA"."ELEMENT"='Moderation of IA')
filter(("CEA"."ELEMENT"='Moderation of IA' AND (:V_PADDED_EXAMINER_CODE IS NULL OR
"EXAMINER_CODE"=:V_PADDED_EXAMINER_CODE)))
18 - access("EXNAME"."EXAMINER_CODE"="IAF"."EXAMINER_CODE")
filter("EXNAME"."EXAMINER_CODE"="IAF"."EXAMINER_CODE")
21 - access("WFI"."INSTANCE_ID"="IA1"."WORKFLOW_INSTANCE_ID")
22 - filter(("IA1"."MONTH"=:V_MONTH AND "IA1"."YEAR"=TO_NUMBER(:V_YEAR)))
24 - filter((:V_EXAMINER_NAME IS NULL OR UPPER("TITLE"||' '||"FIRSTNAME"||' '||"LASTNAME") LIKE :V_SEARCH_EXAMINER_NAME))
25 - access("EXNAME"."EXAMINER_CODE"="PERSON_CODE")
66 rows selected -
Hi ,
Below query is taking more time (4mins) for 41 rows returning and there is no full table scan .Can some one help to rewrite the query.
SELECT
esma.candidate AS candidate_additional_sample,
ccr.raw_mark,
ccr.split_session_year AS year,
ccr.split_session_month AS month,
ccr.paper_code,
ccr.assessment_school AS school_code,
get_cand_session_number(ccr.split_session_year,ccr.split_session_month,ccr.candidate) AS candidate_session_number,
ccr.candidate AS candidate_code,
c.firstname AS candidate_firstname,
c.lastname AS candidate_lastname,
ema.moderator_code,
ema.examiner_code,
csr.self_taught
FROM
ibis.candidate_component_reg ccr
INNER JOIN ibis.candidate_examiner_allocation cea
ON ccr.split_session_year= cea.year
AND ccr.split_session_month=cea.month
AND ccr.assessment_school=cea.assessment_school
AND ccr.paper_code= cea.paper_code
AND ccr.candidate = cea.candidate
INNER JOIN ibis.examination_paper ep
ON ccr.split_session_year= ep.year
AND ccr.split_session_month=ep.month
AND ccr.paper_code=ep.paper_code
INNER JOIN ibis.examiner_moderator_allocation ema
ON ema.year =cea.year
AND ema.month =cea.month
AND ema.no_lang_code=ep.no_lang_code
AND ema.examiner_code=cea.examiner_code
AND ema.year =ccr.split_session_year
AND ema.month =ccr.split_session_month
INNER JOIN ibis.candidate_subject_registration csr
ON ccr.split_session_year=csr.year
AND ccr.split_session_month=csr.month
AND ccr.main_school=csr.main_school
AND ccr.candidate=csr.candidate
AND ccr.subject=csr.subject
AND ccr.subject_option=csr.subject_option
AND ccr.lvl=csr.lvl
AND ccr.language=csr.language
INNER JOIN ibis.candidate c
ON ccr.candidate=c.candidate
LEFT OUTER JOIN ibis.exam_sample_mark_additional esma
ON ccr.split_session_year = esma.year
AND ccr.split_session_month = esma.month
AND ep.no_lang_code = esma.nolang_code
AND ccr.candidate = esma.candidate
WHERE
ccr.split_session_year=:v_year
AND ccr.split_session_month=:v_month
AND ccr.subject=:v_subject
AND ccr.subject_option=nvl(:v_subject_option,ccr.subject_option)
AND ccr.language=nvl(:v_language, ccr.language)
AND ccr.component=:v_component
AND ccr.lvl=:v_lvl
AND ccr.raw_mark IS NOT NULL
AND cea.examiner_code = :v_examiner_code
AND ((ccr.sampled='Y'
AND csr.self_taught='N'
AND EXISTS (SELECT 1 FROM ibis.subject_component sc
WHERE sc.assessment_method_id = 11
AND sc.assessment_type='INTERNAL'
AND ccr.split_session_year=sc.year
AND ccr.split_session_month=sc.month
AND ccr.paper_code=sc.paper_code
AND ccr.subject=sc.subject
AND ccr.subject_option=sc.subject_option
AND ccr.lvl=sc.lvl
AND ccr.language=sc.language
AND ccr.component=sc.component)
AND NOT EXISTS (SELECT 1 FROM ibis.cw_portfolio_template cpt
WHERE ccr.split_session_year = cpt.year
AND ccr.split_session_month = cpt.month
AND ccr.subject = cpt.subject
AND ccr.subject_option = cpt.subject_option
AND ccr.component = cpt.component
AND cpt.combined = 'Y')
AND NOT EXISTS (SELECT 1 FROM ibis.school_sample_mark ssm
WHERE ssm.year= ccr.split_session_year
AND ssm.month = ccr.split_session_month
AND ssm.paper_code = ccr.paper_code
AND ssm.candidate =ccr.candidate
AND ssm.examiner_sample = 'Y'))
OR (ccr.sampled='N'
AND csr.self_taught='Y'
AND EXISTS (SELECT 1 FROM ibis.subject_component sc
WHERE sc.assessment_method_id = 11
AND ccr.split_session_year=sc.year
AND ccr.split_session_month=sc.month
AND ccr.paper_code=sc.paper_code
AND ccr.subject=sc.subject
AND ccr.subject_option=sc.subject_option
AND ccr.lvl=sc.lvl
AND ccr.language=sc.language
AND ccr.component=sc.component)
AND NOT EXISTS (SELECT 1 FROM ibis.cw_portfolio_template cpt
WHERE ccr.split_session_year = cpt.year
AND ccr.split_session_month = cpt.month
AND ccr.subject = cpt.subject
AND ccr.subject_option = cpt.subject_option
AND ccr.component = cpt.component
AND cpt.combined = 'Y'))
OR (ccr.sampled='N'
AND EXISTS (SELECT 1 FROM ibis.subject_component sc
WHERE sc.assessment_method_id = 11
AND ccr.split_session_year=sc.year
AND ccr.split_session_month=sc.month
AND ccr.paper_code=sc.paper_code
AND ccr.subject=sc.subject
AND ccr.subject_option=sc.subject_option
AND ccr.lvl=sc.lvl
AND ccr.language=sc.language
AND ccr.component=sc.component)
AND EXISTS (SELECT 1 FROM ibis.cw_portfolio_template cpt
WHERE ccr.split_session_year = cpt.year
AND ccr.split_session_month = cpt.month
AND ccr.subject = cpt.subject
AND ccr.subject_option = cpt.subject_option
AND ccr.component = cpt.component
AND cpt.combined = 'Y')));
explain plan
line 1: SQLPLUS Command Skipped: set linesize 130
line 2: SQLPLUS Command Skipped: set pagesize 0
PLAN_TABLE_OUTPUT
Plan hash value: 2594643366
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 2 | 1036 | 34 (3)| 00:00:01 |
|* 1 | FILTER | | | | | |
|* 2 | HASH JOIN OUTER | | 2 | 1036 | 34 (3)| 00:00:01 |
| 3 | VIEW | | 2 | 974 | 32 (0)| 00:00:01 |
| 4 | CONCATENATION | | | | | |
|* 5 | FILTER | | | | | |
|* 6 | TABLE ACCESS BY INDEX ROWID | CANDIDATE_SUBJECT_REGISTRATION | 1 | 58 | 3 (0)| 00:00:01 |
| 7 | NESTED LOOPS | | 1 | 485 | 16 (0)| 00:00:01 |
| 8 | NESTED LOOPS | | 1 | 427 | 13 (0)| 00:00:01 |
| 9 | NESTED LOOPS | | 1 | 357 | 11 (0)| 00:00:01 |
| 10 | NESTED LOOPS | | 1 | 129 | 8 (0)| 00:00:01 |
| 11 | NESTED LOOPS | | 1 | 80 | 5 (0)| 00:00:01 |
|* 12 | INDEX RANGE SCAN | PK_EXAMINER_MODERATOR_ALLOC | 1 | 39 | 3 (0)| 00:00:01 |
|* 13 | INDEX RANGE SCAN | RFL_EP1 | 1 | 41 | 2 (0)| 00:00:01 |
| 14 | TABLE ACCESS BY INDEX ROWID| CANDIDATE_EXAMINER_ALLOCATION | 1 | 49 | 3 (0)| 00:00:01 |
|* 15 | INDEX RANGE SCAN | CANDIDATE_ALLOCATION_EXAMINER | 1 | | 2 (0)| 00:00:01 |
|* 16 | TABLE ACCESS BY INDEX ROWID | CANDIDATE_COMPONENT_REG | 1 | 228 | 3 (0)| 00:00:01 |
|* 17 | INDEX RANGE SCAN | SPLIT_SESSION_CANDIDATE | 1 | | 2 (0)| 00:00:01 |
| 18 | TABLE ACCESS BY INDEX ROWID | CANDIDATE | 1 | 70 | 2 (0)| 00:00:01 |
|* 19 | INDEX UNIQUE SCAN | CANDIDATE_PK | 1 | | 1 (0)| 00:00:01 |
|* 20 | INDEX RANGE SCAN | Y_M_CAND_SUBJ_LVL_OPTION | 1 | | 2 (0)| 00:00:01 |
|* 21 | FILTER | | | | | |
|* 22 | TABLE ACCESS BY INDEX ROWID | CANDIDATE_SUBJECT_REGISTRATION | 1 | 58 | 3 (0)| 00:00:01 |
| 23 | NESTED LOOPS | | 1 | 485 | 16 (0)| 00:00:01 |
| 24 | NESTED LOOPS | | 1 | 427 | 13 (0)| 00:00:01 |
| 25 | NESTED LOOPS | | 1 | 357 | 11 (0)| 00:00:01 |
| 26 | NESTED LOOPS | | 1 | 129 | 8 (0)| 00:00:01 |
| 27 | NESTED LOOPS | | 1 | 80 | 5 (0)| 00:00:01 |
|* 28 | INDEX RANGE SCAN | PK_EXAMINER_MODERATOR_ALLOC | 1 | 39 | 3 (0)| 00:00:01 |
|* 29 | INDEX RANGE SCAN | RFL_EP1 | 1 | 41 | 2 (0)| 00:00:01 |
| 30 | TABLE ACCESS BY INDEX ROWID| CANDIDATE_EXAMINER_ALLOCATION | 1 | 49 | 3 (0)| 00:00:01 |
|* 31 | INDEX RANGE SCAN | CANDIDATE_ALLOCATION_EXAMINER | 1 | | 2 (0)| 00:00:01 |
|* 32 | TABLE ACCESS BY INDEX ROWID | CANDIDATE_COMPONENT_REG | 1 | 228 | 3 (0)| 00:00:01 |
|* 33 | INDEX RANGE SCAN | SPLIT_SESSION_CANDIDATE | 1 | | 2 (0)| 00:00:01 |
| 34 | TABLE ACCESS BY INDEX ROWID | CANDIDATE | 1 | 70 | 2 (0)| 00:00:01 |
|* 35 | INDEX UNIQUE SCAN | CANDIDATE_PK | 1 | | 1 (0)| 00:00:01 |
|* 36 | INDEX RANGE SCAN | Y_M_CAND_SUBJ_LVL_OPTION | 1 | | 2 (0)| 00:00:01 |
|* 37 | INDEX RANGE SCAN | EXAM_SAMP_MARK_ADD_IOT_PK | 36 | 1116 | 1 (0)| 00:00:01 |
|* 38 | TABLE ACCESS BY INDEX ROWID | CW_PORTFOLIO_TEMPLATE | 1 | 46 | 4 (0)| 00:00:01 |
|* 39 | INDEX RANGE SCAN | YEAR_MON_PORTFOLIO_TEMPLATE | 1 | | 3 (0)| 00:00:01 |
|* 40 | TABLE ACCESS BY INDEX ROWID | SCHOOL_SAMPLE_MARK | 1 | 34 | 4 (0)| 00:00:01 |
|* 41 | INDEX RANGE SCAN | CAND_PAPER_YEAR_MONTH | 1 | | 3 (0)| 00:00:01 |
|* 42 | TABLE ACCESS BY INDEX ROWID | SUBJECT_COMPONENT | 1 | 96 | 4 (0)| 00:00:01 |
|* 43 | INDEX RANGE SCAN | SUBJECT_COMPONENT_PK | 1 | | 3 (0)| 00:00:01 |
|* 44 | TABLE ACCESS BY INDEX ROWID | CW_PORTFOLIO_TEMPLATE | 1 | 46 | 4 (0)| 00:00:01 |
|* 45 | INDEX RANGE SCAN | YEAR_MON_PORTFOLIO_TEMPLATE | 1 | | 3 (0)| 00:00:01 |
|* 46 | TABLE ACCESS BY INDEX ROWID | SUBJECT_COMPONENT | 1 | 87 | 4 (0)| 00:00:01 |
|* 47 | INDEX RANGE SCAN | SUBJECT_COMPONENT_PK | 1 | | 3 (0)| 00:00:01 |
|* 48 | TABLE ACCESS BY INDEX ROWID | SUBJECT_COMPONENT | 1 | 87 | 4 (0)| 00:00:01 |
|* 49 | INDEX RANGE SCAN | SUBJECT_COMPONENT_PK | 1 | | 3 (0)| 00:00:01 |
|* 50 | TABLE ACCESS BY INDEX ROWID | CW_PORTFOLIO_TEMPLATE | 1 | 46 | 4 (0)| 00:00:01 |
|* 51 | INDEX RANGE SCAN | YEAR_MON_PORTFOLIO_TEMPLATE | 1 | | 3 (0)| 00:00:01 |
Predicate Information (identified by operation id):
1 - filter("from$_subquery$_011"."SAMPLED"='Y' AND "from$_subquery$_011"."SELF_TAUGHT"='N' AND NOT EXISTS
(SELECT /*+ */ 0 FROM "IBIS"."CW_PORTFOLIO_TEMPLATE" "CPT" WHERE "CPT"."COMPONENT"=:B1 AND
"CPT"."SUBJECT_OPTION"=:B2 AND "CPT"."SUBJECT"=:B3 AND "CPT"."MONTH"=:B4 AND "CPT"."YEAR"=:B5 AND
"CPT"."COMBINED"='Y') AND NOT EXISTS (SELECT /*+ */ 0 FROM "IBIS"."SCHOOL_SAMPLE_MARK" "SSM" WHERE
"SSM"."MONTH"=:B6 AND "SSM"."YEAR"=:B7 AND "SSM"."PAPER_CODE"=:B8 AND "SSM"."CANDIDATE"=:B9 AND
"SSM"."EXAMINER_SAMPLE"='Y') AND EXISTS (SELECT /*+ */ 0 FROM "IBIS"."SUBJECT_COMPONENT" "SC" WHERE
"SC"."COMPONENT"=:B10 AND "SC"."SUBJECT_OPTION"=:B11 AND "SC"."LANGUAGE"=:B12 AND "SC"."LVL"=:B13 AND
"SC"."SUBJECT"=:B14 AND "SC"."MONTH"=:B15 AND "SC"."YEAR"=:B16 AND "SC"."PAPER_CODE"=:B17 AND
"SC"."ASSESSMENT_METHOD_ID"=11 AND "SC"."ASSESSMENT_TYPE"='INTERNAL') OR "from$_subquery$_011"."SAMPLED"='N'
AND "from$_subquery$_011"."SELF_TAUGHT"='Y' AND NOT EXISTS (SELECT /*+ */ 0 FROM
"IBIS"."CW_PORTFOLIO_TEMPLATE" "CPT" WHERE "CPT"."COMPONENT"=:B18 AND "CPT"."SUBJECT_OPTION"=:B19 AND
"CPT"."SUBJECT"=:B20 AND "CPT"."MONTH"=:B21 AND "CPT"."YEAR"=:B22 AND "CPT"."COMBINED"='Y') AND EXISTS (SELECT
/*+ */ 0 FROM "IBIS"."SUBJECT_COMPONENT" "SC" WHERE "SC"."COMPONENT"=:B23 AND "SC"."SUBJECT_OPTION"=:B24 ANDEdited byCan you please post the following scripts:
1. Tables structure (with all indexes & constraints)
2. Tables data
3. SQL trace file
possibly everything that one can need to regenerate the scenario on his own DB...
OR
spend some time with Oracle Docs on Performance Tuning and then resolve it yourself.
Regards,
Ankit Rathi
http://theoraclelog.blogspot.in -
How can we rewrite this query for better performance
Hi All,
The below query is taking more time to run. Any ideas how to improve the performance by rewriting the query using NOT EXITS or any other way...
Help Appreciated.
/* Formatted on 2012/04/25 18:00 (Formatter Plus v4.8.8) */
SELECT vendor_id
FROM po_vendors
WHERE end_date_active IS NULL
AND enabled_flag = 'Y'
and vendor_id NOT IN ( /* Formatted on 2012/04/25 18:25 (Formatter Plus v4.8.8) */
SELECT vendor_id
FROM po_headers_all
WHERE TO_DATE (creation_date) BETWEEN TO_DATE (SYSDATE - 365)
AND TO_DATE (SYSDATE))
ThanksTry this one :
This will help you for partial fetching of data
SELECT /*+ first_rows(50) no_cpu_costing */
vendor_id
FROM po_vendors
WHERE end_date_active IS NULL
AND enabled_flag = 'Y'
AND vendor_id NOT IN (
SELECT vendor_id
FROM po_headers_all
WHERE TO_DATE (creation_date) BETWEEN TO_DATE (SYSDATE - 365)
AND TO_DATE (SYSDATE))
overall your query is also fine, because, the in this query the subquery always contain less data compare to main query. -
How can i rewrite this query so it uses less inner joins (it causes my temp space to explode :) )
( SELECT Waardes.*, Tellers.Nr_Dataitems, Tellers.Nr_Details FROM
( SELECT extractvalue(Value(el_node), 'Node/Id') node,
extractvalue(Value(el_dataitem), 'Detail/Title') Node_Title,
extractvalue(Value(el_dataitem), 'Detail/Value') Node_Value
FROM PHILIPS_XML x,
TABLE (xmlsequence (extract (value(x), '/Tree/Node'))) el_node,
TABLE (xmlsequence (extract (value(el_node),
'Node/DataItems/DataItem/DetailSet/Detail'))) el_dataitem
) Waardes
INNER JOIN
SELECT A.Node, A.Nr_Dataitems, B.Nr_details FROM
SELECT extractvalue(Value(el_node), 'Node/Id') node,
count(extract(Value(aaa), 'DataItem')) Nr_Dataitems
FROM PHILIPS_XML x,
TABLE (xmlsequence (extract (value(x), '/Tree/Node'))) el_node,
TABLE (xmlsequence (extract (value(el_node),
'Node/DataItems/DataItem'))) aaa
GROUP BY extractvalue(Value(el_node), 'Node/Id')
) A
INNER JOIN
SELECT extractvalue(Value(el_node), 'Node/Id') node,
count(extract(Value(bbb), 'Detail')) Nr_details
FROM PHILIPS_XML x,
TABLE (xmlsequence (extract (value(x), '/Tree/Node'))) el_node,
TABLE (xmlsequence (extract (value(el_node),
'Node/DataItems/DataItem'))) aaa,
TABLE (xmlsequence (extract (value(aaa),
'DataItem/DetailSet/Detail' ))) bbb
GROUP BY extractvalue(Value(el_node), 'Node/Id')
) B
on A.node = B.NODE
) Tellers
ON Waardes.NODE = Tellers.NODE )1st Make sure all paths are absolute (start with '/', not just the node name).
Which release are you using.. Is the document based on an XMLSchema, if so, what annotations were used when registered the XML Schema ?. What does the explain plan look like... -
Hi all,
Can we rewrite this query as simplest.Becasue when i Execute this query it will take more time appro 3hrs.So can we rewrite this as possible.
SELECT scon.uabscon_number,
scon.uabscon_cust_code,
scon.uabscon_prem_code,
scon.uabscon_mf_status,
letd.usrletd_mf_next_visit_date,
evau.ucrevau_invn_code,
evau.ucrevau_prod_number
FROM uimsmgr.usrletd letd,
uimsmgr.ucrevau evau,
uimsmgr.uabscon scon
WHERE scon.uabscon_mf_status = :cMoveForwardPhase
AND scon.uabscon_status_ind IN ('A','R')
AND evau.ucrevau_scon_number = scon.uabscon_number
AND evau.ucrevau_event_type = :currentLetterTypeLevel /* FLT1,ALT1,FLT2, ... */
AND evau.ucrevau_value_1 = :letterTypeCode /* FV1,ASV1, ... */
AND evau.ucrevau_activity_date = (SELECT max(ee.ucrevau_activity_date)
FROM uimsmgr.ucrevau ee
WHERE ee.ucrevau_scon_number = scon.uabscon_number
AND (ee.ucrevau_event_type like 'FLT%'
OR ee.ucrevau_event_type like 'ALT%'))
AND letd.usrletd_actual_cust_code = scon.uabscon_cust_code
AND letd.usrletd_prem_code = scon.uabscon_prem_code
AND letd.usrletd_letr_code = :letterTypeCode /* FV1,ASV1, ... */
AND letd.usrletd_printed_date <= SYSDATE - :mfFirstDelayDays
AND letd.usrletd_printed_ind = 'Y'
AND TRUNC(letd.usrletd_activity_date) >= TRUNC(evau.ucrevau_activity_date)
AND EXISTS ( SELECT 1
FROM uimsmgr.utvsrvc srvc,
uimsmgr.ucrserv serv
WHERE serv.ucrserv_scon_number = scon.uabscon_number
AND serv.ucrserv_cust_code = scon.uabscon_cust_code
AND serv.ucrserv_prem_code = scon.uabscon_prem_code
AND TRUNC(serv.ucrserv_next_visit_date) <= TRUNC(SYSDATE) + :mfDueRange
AND serv.ucrserv_srvc_code = srvc.utvsrvc_code
AND srvc.utvsrvc_bus_sector_id = 1 /* only business sector 1*/
AND DECODE( NVL(serv.ucrserv_next_visit_type, 'A'),
'NOFV', 'A',
'FV' , 'F',
'FAS' , 'A',
'A' , 'A',
'Z' ) = :visitType
);SELECT /*+ ordered */ scon.uabscon_number,
scon.uabscon_cust_code,
scon.uabscon_prem_code,
scon.uabscon_mf_status,
letd.usrletd_mf_next_visit_date,
evau.ucrevau_invn_code,
evau.ucrevau_prod_number
FROM uimsmgr.usrletd letd,
uimsmgr.ucrevau evau,
uimsmgr.uabscon scon
WHERE letd.usrletd_printed_date <= SYSDATE - :mfFirstDelayDays and scon.uabscon_mf_status = :cMoveForwardPhase
AND scon.uabscon_status_ind IN ('A','R')
AND evau.ucrevau_scon_number = scon.uabscon_number
AND evau.ucrevau_event_type = :currentLetterTypeLevel /* FLT1,ALT1,FLT2, ... */
AND evau.ucrevau_value_1 = :letterTypeCode /* FV1,ASV1, ... */
AND evau.ucrevau_activity_date = (SELECT max(ee.ucrevau_activity_date)
FROM uimsmgr.ucrevau ee
WHERE ee.ucrevau_scon_number = scon.uabscon_number
AND (ee.ucrevau_event_type like 'FLT%'
OR ee.ucrevau_event_type like 'ALT%'))
AND letd.usrletd_actual_cust_code = scon.uabscon_cust_code
AND letd.usrletd_prem_code = scon.uabscon_prem_code
AND letd.usrletd_letr_code = :letterTypeCode /* FV1,ASV1, ... */
AND letd.usrletd_printed_ind = 'Y'
AND TRUNC(letd.usrletd_activity_date) >= TRUNC(evau.ucrevau_activity_date)
AND EXISTS ( SELECT 1
FROM uimsmgr.utvsrvc srvc,
uimsmgr.ucrserv serv
WHERE serv.ucrserv_scon_number = scon.uabscon_number
AND serv.ucrserv_cust_code = scon.uabscon_cust_code
AND serv.ucrserv_prem_code = scon.uabscon_prem_code
AND TRUNC(serv.ucrserv_next_visit_date) <= TRUNC(SYSDATE) + :mfDueRange
AND serv.ucrserv_srvc_code = srvc.utvsrvc_code
AND srvc.utvsrvc_bus_sector_id = 1 /* only business sector 1*/
AND DECODE( NVL(serv.ucrserv_next_visit_type, 'A'),
'NOFV', 'A',
'FV' , 'F',
'FAS' , 'A',
'A' , 'A',
'Z' ) = :visitType
)I suggest this admitting on letd.usrletd_printed_date.
And it would be good if you would also have a lower limit for letd.usrletd_printed_date, so that you would have letd.usrletd_printed_date between ... -
Hi All,
DB version is 10.2.0.4
Could see latch: cache buffers chains on a sid which is running a query for hours together. The query and the explain plan is below
explain plan for SELECT MIN(LINE_ID),MIN(LINE_DETAIL_ID),MAX(LOT_ID) FROM IC_TRAN_PND WHERE DOC_TYPE = 'OMSO' AND DELETE_MARK= 0 AND COMPLETED_IND = 1 AND LOT_STATUS =
'GOOD' AND LOT_ID IN (SELECT LOT_ID FROM IC_LOTS_MST WHERE LOT_NO = :B1 );
Explained.
PLAN_TABLE_OUTPUT
Plan hash value: 2243190951
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 1 | 46 | 26 (0)| 00:00:01 |
| 1 | SORT AGGREGATE | | 1 | 46 | | |
|* 2 | TABLE ACCESS BY INDEX ROWID | IC_TRAN_PND | 30677 | 838K| 4 (0)| 00:00:01 |
| 3 | NESTED LOOPS | | 138K| 6211K| 26 (0)| 00:00:01 |
| 4 | TABLE ACCESS BY INDEX ROWID| IC_LOTS_MST | 5 | 90 | 6 (0)| 00:00:01 |
|* 5 | INDEX RANGE SCAN | IC_LOTS_MST_I1 | 5 | | 3 (0)| 00:00:01 |
|* 6 | INDEX RANGE SCAN | IC_TRAN_PND2 | 1 | | 3 (0)| 00:00:01 |
Predicate Information (identified by operation id):
2 - filter("LOT_STATUS"='GOOD')
5 - access("LOT_NO"=:B1)
6 - access("LOT_ID"="LOT_ID" AND "DELETE_MARK"=0 AND "DOC_TYPE"='OMSO' AND
"COMPLETED_IND"=1)
21 rows selected.Tried rewriting the query to
SELECT MIN(LINE_ID),MIN(LINE_DETAIL_ID),MAX(b.LOT_ID) FROM IC_TRAN_PND a,IC_LOTS_MST B WHERE a.DOC_TYPE = 'OMSO' AND a.DELETE_MARK= 0 AND a.COMPLETED_IND = 1 AND a.LOT_STATUS =
'GOOD' AND a.LOT_ID=b.LOT_ID and b.LOT_NO = :B1 Not sure if the above satifies the originial query conditions. The xplain plan remains the same for the second one too. How do i rewrite the query and avoid the latch buffer chains.
baskar.lhi,
explain plan for SELECT MIN (LINE_ID), MIN (LINE_DETAIL_ID), MAX (LOT_ID)
2 FROM IC_TRAN_PND A
3 WHERE DOC_TYPE = 'OMSO'
4 AND DELETE_MARK = 0
5 AND COMPLETED_IND = 1
6 AND LOT_STATUS = 'GOOD'
7 AND EXISTS
8 (SELECT 'X'
9 FROM IC_LOTS_MST B
10 WHERE B.LOT_NO = :B1
11 AND A.LOT_ID = B.LOT_ID);
Explained.
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 1 | 46 | 19 (6)| 00:00:01 |
| 1 | SORT AGGREGATE | | 1 | 46 | | |
|* 2 | TABLE ACCESS BY INDEX ROWID | IC_TRAN_PND | 30677 | 838K| 4 (0)| 00:00:01 |
| 3 | NESTED LOOPS | | 138K| 6211K| 19 (6)| 00:00:01 |
| 4 | SORT UNIQUE | | 5 | 90 | 6 (0)| 00:00:01 |
| 5 | TABLE ACCESS BY INDEX ROWID| IC_LOTS_MST | 5 | 90 | 6 (0)| 00:00:01 |
|* 6 | INDEX RANGE SCAN | IC_LOTS_MST_I1 | 5 | | 3 (0)| 00:00:01 |
|* 7 | INDEX RANGE SCAN | IC_TRAN_PND2 | 1 | | 3 (0)| 00:00:01 |
--------------------------------------------------------------------------------------------------Is that distinct will return duplicate rows too??
baskar.l -
hi ,
Actual i write the query like this , and run this query in sql developer ,
it will take more than 15 mins
alloc_details table -- 2 lac records
doc_details -- 2 lac records
query :
SELECT
a.activity
, sum( a.lamt ) lamt
, sum( a.lamt ) camt
FROM
alloc_detail a
WHERE
a.alc_code <>'JOB'
And a.alc_value is not null
And EXISTS ( SELECT
distinct b.doc_no
FROM
doc_detail b
WHERE
a.org=b.org
And a.doc_no=b.doc_no
And a.doc_type=b.doc_type
And ( b.dr_act_code='11111' OR b.cr_act_code='111111')
And ( ( trunc( b.doc_date ) >='01-jan-08' ) )
And ( ( trunc( b.doc_date ) <= '31-jan-08' ) )
GROUP BY
a.alc_value
Anyother way to rewrite the query .Is this query working? a.activity seems to be a "not a group by expression"
select a.activity,sum(a.lamt) lamt,sum(a.lamt) camt /* 2 times same sum - a typo ? */
from alloc_detail a
where a.alc_code != 'JOB' /* not equal presumed */
and a.alc_value is not null
and exists(select distinct b.doc_no
from doc_detail b
where a.org = b.org
and a.doc_no = b.doc_no
and a.doc_type = b.doc_type
and (b.dr_act_code = '11111' or b.cr_act_code = '111111')
and trunc(b.doc_date) >= '01-jan-08'
and trunc(b.doc_date) <= '31-jan-08'
group by a.alc_valuehow about applying predicates first
select a.alc_value,sum(a.lamt) lamt,sum(a.camt) camt
from (select alc_value,lamt,camt,org,doc_no,doc_type
from alloc_detail
where alc_code != 'JOB'
and alc_value is not null
) a,
(select distinct org,doc_no,doc_type
from doc_detail
where doc_date >= to_date('01-jan-08','dd-mon-rr')
and doc_date <= to_date('31-jan-08','dd-mon-rr') + 1 - 1/24/60/60
and (dr_act_code = '11111' or cr_act_code = '111111')
) b
where a.org = b.org
and a.doc_no = b.doc_no
and a.doc_type = b.doc_type
group by a.alc_valueRegards
Etbin -
Rewrite the query with out joins and group by
Hi,
This was an interview question.
Table Names: bookshelf_checkout
bookshelf
And the join condition between these two tables is title
We need to rewrite below query without using join condition and group by clause ?
SELECT b.title,max(bc.returned_date - bc.checkout_date) "Most Days Out"
FROM bookshelf_checkout bc,bookshelf b
WHERE bc.title(+)=b.title
GROUP BY b.title;When I was in college, I read that most of the SELECT statements can be replaced by basic SQL operations (SET OPERATORS). Now I am trying to rewrite the query with SET operators but not able to get the exact result.
Kindly help me on this.
Thanks,
SuriSomething like this?
1 WITH books AS (
2 SELECT 'title 1' title FROM dual UNION ALL
3 SELECT 'title 2' FROM dual UNION ALL
4 SELECT 'title 3' FROM dual ),
5 bookshelf AS (
6 SELECT 'title 1' title, DATE '2012-05-01' checkout_date, DATE '2012-05-15' returned_date FROM dual UNION ALL
7 SELECT 'title 1' title, DATE '2012-05-16' checkout_date, DATE '2012-05-20' returned_date FROM dual UNION ALL
8 SELECT 'title 2' title, DATE '2012-04-01' checkout_date, DATE '2012-05-15' returned_date FROM dual )
9 SELECT bs.title, MAX(bs.returned_date - bs.checkout_date) OVER (PARTITION BY title) FROM bookshelf bs
10 UNION
11 (SELECT b.title, NULL FROM books b
12 MINUS
13* SELECT bs.title, NULL FROM bookshelf bs)
SQL> /
TITLE MAX(BS.RETURNED_DATE-BS.CHECKOUT_DATE)OVER(PARTITIONBYTITLE)
title 1 14
title 2 44
title 3Lukasz -
Hello,
I would like your help for a query.
I know that the logic is really bad,but i am not the one who will decide it.
SELECT
A.c1
, B.c1
, B.c2
, B.c3
FROM TABLE1 A
INNER JOIN Table2 B
ON B.c4 ='xxx'
AND B.5 = 'xxxx'
AND (A.2=B.c6 OR B.c6 = '*' )
AND (A.3=B.c7 OR B.c7 = '*' )
How can we rewrite this in order not to bring us a cartesian product?
I have tried with
1.case when
2.union
but nothing.....
I really need your help.
ThanksAnother one (just to update the duplicate)
could hardly be faster (maybe on Exadata) than the previous one
select a.c1,b.c1,b.c2,b.c3
from (select c1,c2,c3
from table1
where c2 != '*'
and c3 != '*'
) a
(select c1,c2,c3,c6,c7
from table2
where c4 = 'xxx'
and c5 = 'xxxx'
and c6 != '*'
and c7 != '*'
) b
where (a.c2 = b.c6)
and (a.c3 = b.c7)
union all
select a.c1,b.c1,b.c2,b.c3
from (select c1
from table1
where c2 = '*'
and c3 = '*'
) a
(select c1,c2,c3
from table2
where c4 = 'xxx'
and c5 = 'xxxx'
and c6 = '*'
and c7 = '*'
) bRegards
Etbin
Edited by: Etbin on 24.6.2012 8:57 -
Help with performance SQL tuning - Rewriting the query
Hi
I have serious performance issues with some 8 update queries
These were earlier taking 5 mins . Now taking 2.5 hours
This is one of the culprit UPDATE statement (These are 7 such other update statements on different tables but same logic)
We have change the update to MERGE and used PARALLEL hints but have not got desired results
There are appropriate indexes on the tables
Is there a way to rewrite the UPDATE statement in a better way to improve the performance
update TABLE_dob
set key_act =
(select skey from table_subs
where sub_act = sub_num)
where exists
(select 1 from table_subs
where sub_act = sub_num);
Table_DOB has 37 million records
Table_subs has 20 million recordsaashoo_5 wrote:
Hi
I have serious performance issues with some 8 update queries
These were earlier taking 5 mins . Now taking 2.5 hours
This is one of the culprit UPDATE statement (These are 7 such other update statements on different tables but same logic)
We have change the update to MERGE and used PARALLEL hints but have not got desired results
There are appropriate indexes on the tables
Is there a way to rewrite the UPDATE statement in a better way to improve the performance
update TABLE_dob
set key_act =
(select skey from table_subs
where sub_act = sub_num)
where exists
(select 1 from table_subs
where sub_act = sub_num);
Table_DOB has 37 million records
Table_subs has 20 million recordsThread: HOW TO: Post a SQL statement tuning request - template posting
HOW TO: Post a SQL statement tuning request - template posting -
Is there any way to rewrite this query?
Is there room for improvement/rewrite for this query so that it performs well?
select distinct shp_locn
from shp_mstr
where zone = to_char(:b3)
and locn_class = 'r'
and aisle = 'GX-08'
and dock = 'KN'
and locn_id not in (select locn_id from tmp_shp_out_dtl)
order by shp_locnuser659394 wrote:
Alex,
Stop your st_u_pi_d f_u_c__king sarcasm. There were lots of instances like the below thread
where you bring your boring sarcasm to meaningful technical discussions.
If you dont want to answer, just leave it..... you C__u__n__t
Error for a SELECT COUNT ... in stored proc
Alex was giving you perfectly valid assistance.
Your post has now been reported to the moderators as it is completely offensive, unprofessional and unnecessary. -
Hello,
I need to rewrite this SQL query to give the same result, but in more resorcefull manner.
Probably using aggregation, but I am not sure.
Can somebody give me a head start.
desc resource_bundles
Name Null Type
LOCALE NOT NULL CHAR(5)
BUNDLE_NAME NOT NULL VARCHAR2(32)
RESOURCE_NAME NOT NULL VARCHAR2(64)
VALUE_STRING VARCHAR2(2048 CHAR)
select a.bundle_name,a.resource_name, a.value_string as Czech,(select b.value_string
from resource_bundles b
where b.bundle_name = a.bundle_name
and b.resource_name = a.resource_name
and b.locale = 'en_US'
)as English,
(select c.value_string
from resource_bundles c
where c.bundle_name = a.bundle_name
and c.resource_name = a.resource_name
and c.locale = 'ru_RU'
) as Russian,
(select d.value_string
from resource_bundles d
where d.bundle_name = a.bundle_name
and d.resource_name = a.resource_name
and d.locale = 'it_IT'
) as Italian
from resource_bundles a
where a.locale = 'cs_CZ';Thank you
Edited by: BluShadow on 15-Apr-2011 12:20
added {noformat}{noformat} tagsIt is always helpful to provide the following:
1. Oracle version (SELECT * FROM V$VERSION)
2. Sample data in the form of CREATE / INSERT statements.
3. Expected output
4. Explanation of expected output (A.K.A. "business logic")
5. Use \ tags for #2 and #3. See FAQ (Link on top right side) for details.
Also see the third post in this thread:
{thread:id=2174552} -
Parallel Query - using hints for multiple 'from' tables
Currently I am running the following (simplified) query:
INSERT /*+ APPEND */ INTO NEW_TAB (ID)
SELECT DISTINCT T1.BIG_ID
FROM BIG_TAB1 T1, BIG_TAB2 T2
WHERE T1.BIG_ID = T2.ID2
AND T2.METHOD = 1
AND T1.CODE IN ( /*16 codes here*/ );When this migrates to the production platform the DBAs have asked me to code it for parallel processing.
We implement 4 processors for parallel processing and so usually I would do the following hint between INSERT and INTO;
/*+ PARALLEL (BIG_TAB1, 4) */As my query here accesses two tables how would I modify this statement to make it run in parallel? Would it be;
INSERT /*+ PARALLEL (BIG_TAB1, 4) */ /*+ PARALLEL (BIG_TAB2, 4) */ INTO NEW_TAB (ID)
SELECT DISTINCT T1.BIG_ID?
Thanks for any help!
fakelvisAh, brilliant.
Thank you!
Also, on a related note, I'm using a query of similar size in a PL/SQL script. This big query is in a cursor and the data selected here is then inserted into another table depending on a few criteria.
For this to run on parallel, would the parallel hint be placed in the cursor's SELECT query or on the verious INSERTs within the body of the code? I'm assuming it's in the actual SELECT query of the cursor, but just thought I would check as I'm new to hints!
Thanks again!
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