Query Plan Question for Outer Join
I have the following join query:
select unique ep.ACT_UID,
ep.SE_REQ_TS,
sr.SERVICE_NM
from
eaisvcs.Service_requests sr,
eaisvcs.SERVICE_EPISODE ep
where
ep.ACT_UID = sr.ACT_UID;
I have an index on the act_uid in both tables, and the statistics are up-to-date. There are about 3.2 million rows in each table. 10% of the act_uid's that are in the ep table that do not have a match in the sr table. Other than that, most id's match up between the tables.
Here is the query plan:
ID PARENT_ID OPERATION OPTIONS
0 SELECT STATEMENT
1 0 SORT UNIQUE
2 1 MERGE JOIN
3 2 SORT JOIN
4 3 TABLE ACCESS FULL
5 2 SORT JOIN
6 5 TABLE ACCESS FULL
I cannot figure out why a table scan is being performed every time on both tables. The Act_UID is the PK in the ep table. There is a composite index (act_uid, sev_seq_no) in the sr table. the act_id is a varchar2 column in both tables. The sev_seq_no column is numeric.
Any ideas or insights about this would be greatly appreciated.
Thanks!
The plan can be good.
Oracle choose a full table scan for these reason too:
- sr.SERVICE_NM is not a part of the index and so a full table scan is less expensive. If you will add this field to your composite index Oracle will probably take this new index.
Bye, Aron
Similar Messages
Outer Join Escape Sequence builds the syntax for ODBC drivers using the outer join syntax in its SQL syntax.
Use Regedit on the problem client machine add following keys:
STEP 1........For Crystal Reports 9: HKEY_CURRENT_USER\Software\Crystal Decisions\9.0\Crystal Reports\Database\QueryBuilder\OuterJoinEscSeq
<<<OR>>>
...................For Crystal Reports 10:HKEY_CURRENT_USER\Software\Crystal Decisions\10.0\Crystal Reports\Database\QueryBuilder\OuterJoinEscSeq
STEP 2........"MSOuterJoinEscSeq"= "insert your ODBC driver name here": List of the drivers that support Microsoft ODBC {oj ..} join escape sequence.
"NoOuterJoinEscSeq"= "insert your ODBC driver name here": List of the drivers that do not support any join escape sequence.
For example...
MSOuterJoinEscSeq = "UVODBC"
Outer Join Escape Sequence builds the syntax for ODBC drivers using the outer join syntax in its SQL syntax.
Use Regedit on the problem client machine add following keys:
STEP 1........For Crystal Reports 9: HKEY_CURRENT_USER\Software\Crystal Decisions\9.0\Crystal Reports\Database\QueryBuilder\OuterJoinEscSeq
<<<OR>>>
...................For Crystal Reports 10:HKEY_CURRENT_USER\Software\Crystal Decisions\10.0\Crystal Reports\Database\QueryBuilder\OuterJoinEscSeq
STEP 2........"MSOuterJoinEscSeq"= "insert your ODBC driver name here": List of the drivers that support Microsoft ODBC {oj ..} join escape sequence.
"NoOuterJoinEscSeq"= "insert your ODBC driver name here": List of the drivers that do not support any join escape sequence.
For example...
MSOuterJoinEscSeq = "UVODBC"
Compatible query for outer join..
SELECT e.ename, a.street_address, a.city,a.state,a.post_code
FROM emp e, addr a
WHERE e.empno = a.empno(+)
AND a.state = 'TEXAS'
Which is the compatible ANSI/ISO query for the above mentioned query (A or B)
A)
SELECT e.ename, a.street_address, a.city,a.state,a.post_code
FROM emp e RIGHT OUTER JOIN addr a
ON (e.empno = a.empno)
AND a.state = 'TEXAS'
B)
SELECT e.ename, a.street_address, a.city,a.state,a.post_code
FROM emp e LEFT OUTER JOIN addr a
ON (e.empno = a.empno)
AND a.state = 'TEXAS'
Thanks
Sameer
B)
SELECT e.ename, a.street_address, a.city,a.state,a.post_code
FROM emp e LEFT OUTER JOIN addr a
ON (e.empno = a.empno)
AND a.state = 'TEXAS'
http://www.oracle.com/oramag/oracle/01-nov/index.html?o61sql.html
You posted this question three times. Please post each question only once. Sometimes there is a delay from the time that you click on submit until the time that the post is displayed.
Query Question: Combine outer join with max() statement
Hi Folks,
I have been banging my head on this for a while now and am asking from some advice.
I have a Project Completion Report that pulls information from a number of tables:
1) Program (PK: ID)
2) Project (PK: ID, FK: Program_ID constrained to Program.ID)
3) Project_Monthly (PK: ID, FK: Project_ID constrained to Project.ID)
4) Status_Report (PK: ID, FK: Project_ID constrained to Project.ID)
The Status_Report table has a Record_Date field and holds a BLOB with the status reports for all the projects. In the best of all possible worlds, every project would have a status report, but, obviously, some have no status reports.
I have been asked to extend the Project Completion Report. It currently shows:
1) Program Number (Program.Program_Number)
2) Program Name (Program.Program_Name)
3) Project (Project.Project_Name)
4) Projected Completion Date (Project_Monthly.Current_Date_Production)
We would like to add the latest status report. So I started with something that works in another report, which is to get the ID from the Status_Report table for the record that has the maximum date value in the Record_date that matches the Project in the current Program. But this other query is looking at one program at a time. The Project Completion Report is showing all programs with projects that complete within a certain time frame.
The requirement is to show all projects that will complete within a time frame and to display the ID of the most recent status report (I use javascript to turn this into a downloadable link). However, whenever I try something like:
AND Status_Report.Record_Date =
(select MAX(Status_Report.record_date) from Status_Report
where Status_Report.ID = Project.ID)I loose all projects that have no status reports associated with them.
How can I keep all the projects that fulfill the criteria of completing within a specified time frame and add the ID, if it exists, of the most recent status report?
I thank you for your time and assistance. Please let me know how I can clarify the problem more clearly.
Yours,
Petie
I had thought I finally solved it. Alas, it wasn't yet to be.
I created a view with the following select statement:
select p.program_number, p.program_name,
pj.id as pj_id, pj.project_name, pjm.in_prod_current, pjm.record_date as pjm_record_date,
prs.id as prs_ID, prs.record_date as prs_record_date
from program p, project pj, project_monthly pjm,
project_status_report prs
where p.id = pj.program_id
and pj.id = pjm.project_id
and pj.id = prs.project_id (+);Then, I selected from the view and the project_status_report table, performed an outer join on those (filtered to only the current month's project records) and filtered by the maximum date for each project.
Here is the resulting query:
select pc.program_number, pc.pj_id, pc.project_name, pc.in_prod_current,
pc.pjm_record_date, pc.prs_id
from project_completion pc,
project_status_report prs
where trunc(pjm_record_date, 'mon') = trunc(sysdate,'mon')
and prs.id = pc.prs_id (+)
and pc.prs_record_date =
(select max(mprs.record_date)
from project_status_report mprs
where mprs.project_id = pc.pj_id)However, I am still not getting the projects for which there are no status reports.
Verflixt und zugenaeht!
It seems that I want to compare based upon the record_date of the status report, but get the ID back. Can I use DECODE for that? Can I get the MAX(prs.record_date), but return only the prs.ID? Because if I include the ID in the select statement, I get too many matches, but if I don't then I don't have the ID, which is needed.
Any suggestions?
Thanks, Petie
Message was edited by:
Petie
Need help further tuning view source for outer join
I have been working on tuning views for use in Discoverer for some time, and I have greatly improved upon what was there, but it is still not where I need it to be. There are 2 views the users join together in Discoverer - one for contract lines, and one for contract flexfields. Run as a 1 to 1 join on contract number, performance is great. However, as soon as I have an outer join on flexfields, the performance is awful. We are talking a difference of under a minute to hours and hours. I have to be able to perform an outer join because there can be contracts without flexfields. Can anyone suggest an alternative method to get the data or further tuning? I will paste both the contract lines and contract flexfields source - I have tuned the flexfields but have done nothing to date with the lines.
CREATE OR REPLACE VIEW XXDBD_CONTRACT_FLEXFIELDS AS
SELECT core.contract_id, core.service_id, core.contract_number, core.service_line, core.service, core.product_line, core.equipment, core.UL_Certificate_And_End_Date, core.MAF, core.Termination_Penalty_Percentage, core.multi_year, core.multi_year_effective_dates, core.terms_multi_year, core.SerLineRenPricingMethod, core.ren_line_change, core.zone, core.add_invoice_display, core.add_subgrouping, re.diebold_price, attr.coverage_hours, attr.reaction_times, attr.resolution_times, attr.repair_times, tr.performance_requirement, attr.penalty, attr.penalty_amount, attr.penalty_bonus, attr.mon_break_start, attr.mon_break_end, attr.tues_break_start, attr.tues_break_end, attr.wed_break_start, attr.wed_break_end, attr.thu_break_start, attr.thu_break_end, attr.fri_break_start, attr.fri_break_end, attr.sat_break_start, attr.sat_break_end, attr.sun_break_start, attr.sun_break_end, attr.split_covering, attr.cash_handling
FROM (SELECT aa.ID Contract_id,
aa.contract_number,
dd.id Service_ID ,
dd.cle_id dd_cle_id,
dd.line_number service_line,
xxdbd_Disco_Service_Contract.GetServNameInv
(dd.id) Service,
dd.line_number ||'.'||ee.line_number Product_Line,
xxdbd_Disco_Service_Contract.GetEqpNoInvoice(ee.id)
Equipment,
DECODE(dd.attribute_category,'Service Contracts',
NVL(xxdbd_Disco_Service_Contract.GetContractMasterProperty('DBD_OKS_50_CHARS', dd.attribute1),dd.attribute1),'') UL_Certificate_And_End_Date,
dd.attribute2 MAF,
DECODE(dd.attribute_category,'Service Contracts',NVL(xxdbd_Disco_Service_Contract.GetContractMasterProperty('DBD_OKS_NUMERIC', dd.attribute3),dd.attribute3),'') Termination_Penalty_Percentage,
DECODE(dd.attribute_category,'Service Contracts', DECODE(NVL(xxdbd_Disco_Service_Contract.GetContractMasterProperty('DBD_OKS_MULTIYEAR', dd.attribute5),dd.attribute5),
'N','No Multi-Year',
'Y','Multi-Year, Years not Known',
'Y1','Multi-Year for 1 Year',
'Y2','Multi-Year for 2 Year',
'Y3','Multi-Year for 3 Year',
'Y4','Multi-Year for 4 Year',
'Y5','Multi-Year for 4 Year',dd.attribute5),'')Multi_Year,
dd.attribute4 Multi_Year_Effective_Dates,
DECODE(dd.attribute_category,'Service Contracts', NVL(xxdbd_Disco_Service_Contract.GetContractMasterProperty('DBD_OKS_450_CHARS', dd.attribute9),dd.attribute9),'') Terms_Multi_Year,
DECODE(dd.attribute_category,'Service Contracts', DECODE(NVL(xxdbd_Disco_Service_Contract.GetContractMasterProperty('DBD_OKS_RENEWAL_PRICING', dd.attribute6),dd.attribute6),
'MP', 'DBD Markup Percent',
'CP', 'DBD Contract Price',
'AI', 'DBD Amount Increase',
'AD', 'DBD Amount Decrease',
'TA', 'DBD Target Amount',
'FR', 'DBD Flat Rate',dd.attribute6),'') SerLineRenPricingMethod,
DECODE(dd.attribute_category,'Service Contracts', NVL(xxdbd_Disco_Service_Contract.GetContractMasterProperty('DBD_OKS_NUMERIC', dd.attribute7),dd.attribute7),'') Ren_Line_Change,
DECODE(dd.attribute_category,'Service Contracts', DECODE(NVL(xxdbd_Disco_Service_Contract.GetContractMasterProperty('DBD_OKS_ZONE', dd.attribute8),dd.attribute8),
'DNA1','DNA Zone 1',
'DNA2','DNA Zone 2',
'DNA3','DNA Zone 3',
'BRAZIL1','Brazil Zone 1 (50 KM)',
'BRAZIL2','Brazil Zone 2 (80 KM)',
'BRAZIL3','Brazil Zone 3 (200 KM)',dd.attribute8),'')Zone,
DECODE(dd.attribute11, 'N','None','SC','Sub Component', 'SN', 'Serial Number', 'SNSC', 'Serial Number and Sub-Component') Add_Invoice_Display,
DECODE(dd.attribute10, 'SI','Service Item', 'CP','Covered Product', 'PC','Product Category') Add_SubGrouping,
dd.attribute12 Diebold_Price,
ee.id ee_id,
ee.cle_id ee_cle_id
FROM okc_k_headers_b aa,
okc_k_lines_b dd,
okc_k_lines_b ee
-- xxdbd_temp_flex_contract tfc
WHERE aa.id = dd.DNZ_CHR_ID
AND dd.CLE_ID IS NULL
AND dd.id = ee.cle_id
AND ee.DNZ_CHR_ID = aa.id
AND ee.LSE_ID =9
AND dd.LSE_ID =1
-- and aa.contract_number = 'NL0000014'
-- and aa.contract_number in (select contract_number from xxdbd_flex_contract)
-- AND tfc.contract_number = aa.contract_number
) core,
(SELECT h.contract_number,
DECODE(l.attribute_category,
'Coverage Break', xxdbd_get_sib_cont_id(xxdbd_get_parent_cle_id(l.cle_id,2)),
'Business Process',xxdbd_get_sib_cont_id(xxdbd_get_parent_cle_id(l.cle_id,1)),
'Coverage Template Header',xxdbd_get_sib_cont_id(l.cle_id),
'Transaction Type', xxdbd_get_sib_cont_id(xxdbd_get_parent_cle_id(l.cle_id,2)),null) ee_id,
DECODE(l.attribute_category, 'Business Process', l.attribute1) Coverage_Hours,
DECODE(l.attribute_category, 'Business Process', l.attribute2) Reaction_Times,
DECODE(l.attribute_category, 'Business Process', l.attribute3) Resolution_Times,
DECODE(l.attribute_category, 'Business Process', l.attribute4) Repair_Times,
DECODE(l.attribute_category, 'Business Process', DECODE(l.attribute5,
'RA', 'REACTION'
, 'RS', 'RESOLUTION'
, 'RR', 'REACTION & RESOLUTION'
, 'NR', 'NO REQUIREMENT',
l.attribute5)) Performance_Requirement,
DECODE(l.attribute_category, 'Coverage Template Header', l.attribute1) Penalty,
DECODE(l.attribute_category, 'Coverage Template Header', l.attribute2) Penalty_Amount,
DECODE(l.attribute_category, 'Coverage Template Header', l.attribute3) Penalty_Bonus,
DECODE(l.attribute_category, 'Coverage Break', l.attribute1) Mon_Break_Start,
DECODE(l.attribute_category, 'Coverage Break', l.attribute2) Mon_Break_End,
DECODE(l.attribute_category, 'Coverage Break', l.attribute3) Tues_Break_Start,
DECODE(l.attribute_category, 'Coverage Break', l.attribute4) Tues_Break_End,
DECODE(l.attribute_category, 'Coverage Break', l.attribute5) Wed_Break_Start,
DECODE(l.attribute_category, 'Coverage Break', l.attribute6) Wed_Break_End,
DECODE(l.attribute_category, 'Coverage Break', l.attribute7) Thu_Break_Start,
DECODE(l.attribute_category, 'Coverage Break', l.attribute8) Thu_Break_End,
DECODE(l.attribute_category, 'Coverage Break', l.attribute9) Fri_Break_Start,
DECODE(l.attribute_category, 'Coverage Break', l.attribute10) Fri_Break_End,
DECODE(l.attribute_category, 'Coverage Break', l.attribute11) Sat_Break_Start,
DECODE(l.attribute_category, 'Coverage Break', l.attribute12) Sat_Break_End,
DECODE(l.attribute_category, 'Coverage Break', l.attribute13) Sun_Break_Start,
DECODE(l.attribute_category, 'Coverage Break', l.attribute14) Sun_Break_End,
DECODE(l.attribute_category, 'Transaction Type', l.attribute1) Split_Covering,
DECODE(l.attribute_category, 'Transaction Type', l.attribute2) Cash_Handling
from okc_k_lines_b l , okc_k_headers_b h--, xxdbd_temp_flex_contract tfc
where l.attribute_category in ('Coverage Break', 'Business Process', 'Coverage Template Header','Transaction Type')
and h.id = l.dnz_chr_id
-- and h.contract_number in (select contract_number from xxdbd_flex_contract)
-- and tfc.contract_number = h.contract_number
) attr
where core.ee_id = attr.ee_id (+)
and core.contract_number = attr.contract_number (+);
create or replace view xxdbd_contract_lines as
select aa.id Contract_id,
bb.id Service_id,
aa.CONTRACT_NUMBER,
F1.USER_NAME Created_By,
F2.USER_NAME LastUpdated_By,
bb.LINE_NUMBER Service_Line_No,
bb.LINE_NUMBER ||'.'|| cc.LINE_NUMBER Product_Line_No,
xxdbd_Disco_Service_Contract.GetServNameInv(bb.id) Service,
xxdbd_Disco_Service_Contract.GetServDescInv(bb.id) Service_Desc,
xxdbd_Disco_Service_Contract.GetServicePrice(bb.id) Service_Price,
bb.PRICE_UNIT Service_List_Price,
bb.CURRENCY_CODE,
aa.SCS_CODE Contract_Type,
bb.STS_CODE Service_Status,
bb.TRN_CODE Term_Code,
bb.START_DATE Service_start,
bb.END_DATE Service_end,
TO_NUMBER(OKS_ENT_UTIL_PVT.get_billtoshipto(Null, bb.id, 'OKX_BILLTO' )) SERVICE_BillToSite,
xxdbd_Disco_Service_Contract.GetLocAccount(TO_NUMBER(OKS_ENT_UTIL_PVT.get_billtoshipto(Null, bb.id, 'OKX_BILLTO' ))) Bill_Account,
xxdbd_Disco_Service_Contract.GetLocation(TO_NUMBER(OKS_ENT_UTIL_PVT.get_billtoshipto(NULL, bb.id, 'OKX_BILLTO' ))) Service_BillTo,
TO_NUMBER(OKS_ENT_UTIL_PVT.get_billtoshipto(NULL, bb.id, 'OKX_SHIPTO' )) SERVICE_ShipToSite ,
xxdbd_Disco_Service_Contract.GetLocation(TO_NUMBER(OKS_ENT_UTIL_PVT.get_billtoshipto(NULL, bb.id, 'OKX_SHIPTO' ))) Service_Ship_To,
xxdbd_Disco_Service_Contract.GetLocAccount(TO_NUMBER(OKS_ENT_UTIL_PVT.get_billtoshipto(NULL, bb.id, 'OKX_SHIPTO' ))) Ship_Account,
bb.DATE_RENEWED,
bb.DATE_TERMINATED,
cc.START_DATE Eqp_Start,
cc.END_DATE Eqp_End,
xxdbd_Disco_Service_Contract.GetEqpNoInvoice(cc.id) Eqp_No,
xxdbd_Disco_Service_Contract.GetEqpDescInvoice(cc.ID) Eqp_Desc,
xxdbd_Disco_Service_Contract.GetEqpQuantityInvoice(cc.id) Eqp_Quan,
xxdbd_Disco_Service_Contract.GetEqpSerialNoInvoice(cc.id) Eqp_Serial,
xxdbd_Disco_Service_Contract.GetCustomerCt(aa.id, bb.id) Cust_Contact,
DD.ORGANIZATION_ID,
dd.INSTALL_ADDRESS,
dd.INSTALL_DATE,
dd.INSTALL_SITE_ID INSTALL_SITE_USE_ID,
dd.PARTY_SITE_NAME INSTALL_SITE_NAME,
dd.PARTY_SITE_NUMBER INSTALL_SITE_NUMBER
,cii.inventory_item_id
,cii.inv_master_organization_id
,aa.authoring_org_id
,cc.id equipment_id
,TO_NUMBER(replace(bb.attribute12,',','')) annual_contract_amt
,ou.name operating_unit
,ou.organization_id operating_unit_id
,substr(xxdbd_ra_utility.Get_BusinessProcess(cc.cle_id),1,100) business_process
,cii.instance_id
,cii.instance_number
from okc_k_headers_b aa
,okc_k_lines_b bb
,okc_k_lines_b cc
,fnd_user f1
,fnd_user f2
,csi_item_instances cii
,okc_k_items items
,hr_all_organization_units ou
,xxdbd_oks_install_info_v dd
where aa.id = bb.dnz_chr_id
and bb.cle_id is null
and cc.cle_id = bb.id
and cc.dnz_chr_id = aa.id
and f1.user_id = bb.created_by
and f2.user_id = bb.last_updated_by
and cc.lse_id in (9,25,18,40)
and dd.line_id (+) = cc.id
and items.cle_id = cc.id
and cii.instance_id = items.object1_id1
and aa.authoring_org_id = ou.organization_id (+);
Here are the explain plans from TOAD:
Operation Object Name Rows Bytes Cost Object Node In/Out PStart PStop
SELECT STATEMENT Optimizer Mode=CHOOSE 6 49124
NESTED LOOPS OUTER 6 80 K 49124
VIEW 6 80 K 49112
HASH JOIN 6 1 K 49112
HASH JOIN 17 K 2 M 20214
TABLE ACCESS FULL OKC.OKC_K_HEADERS_B 5 K 175 K 37
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_LINES_B 17 K 1 M 20162
INDEX SKIP SCAN XXDBD.XXDBD_OKC_K_LINES_B_N10 39 17085
TABLE ACCESS FULL OKC.OKC_K_LINES_B 502 K 34 M 27803
VIEW PUSHED PREDICATE 1 107 2
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_LINES_B 42 3 K 216
NESTED LOOPS 50 5 K 219
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_HEADERS_B 1 33 3
INDEX RANGE SCAN OKC.OKC_K_HEADERS_B_U2 1 2
INDEX RANGE SCAN OKC.OKC_K_LINES_B_N2 1 K 32
Operation Object Name Rows Bytes Cost Object Node In/Out PStart PStop
SELECT STATEMENT Optimizer Mode=CHOOSE 245 63309
NESTED LOOPS 245 291 K 63309
NESTED LOOPS OUTER 245 286 K 63064
NESTED LOOPS 245 80 K 62574
HASH JOIN 245 74 K 61839
HASH JOIN 245 71 K 61756
HASH JOIN OUTER 245 68 K 61673
HASH JOIN 245 60 K 61664
HASH JOIN 205 K 32 M 28046
TABLE ACCESS FULL OKC.OKC_K_HEADERS_B 5 K 244 K 37
TABLE ACCESS FULL OKC.OKC_K_LINES_B 205 K 23 M 27803
TABLE ACCESS FULL OKC.OKC_K_LINES_B 2 M 168 M 27803
TABLE ACCESS FULL HR.HR_ALL_ORGANIZATION_UNITS 2 K 64 K 8
TABLE ACCESS FULL APPLSYS.FND_USER 13 K 172 K 81
TABLE ACCESS FULL APPLSYS.FND_USER 13 K 172 K 81
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_ITEMS 1 26 3
INDEX RANGE SCAN OKC.OKC_K_ITEMS_N1 1 2
VIEW APPS.XXDBD_OKS_INSTALL_INFO_V 1 861 2
UNION-ALL PARTITION
NESTED LOOPS 1 167 9
NESTED LOOPS 1 108 8
NESTED LOOPS 1 85 7
NESTED LOOPS 1 51 6
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_LINES_B 1 25 3
INDEX UNIQUE SCAN OKC.OKC_K_LINES_B_U1 1 2
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_ITEMS 1 26 3
INDEX RANGE SCAN OKC.OKC_K_ITEMS_N1 1 2
TABLE ACCESS BY INDEX ROWID CSI.CSI_ITEM_INSTANCES 1 34 1
INDEX UNIQUE SCAN CSI.CSI_ITEM_INSTANCES_U01 1
TABLE ACCESS BY INDEX ROWID AR.HZ_PARTY_SITES 1 23 1
INDEX UNIQUE SCAN AR.HZ_PARTY_SITES_U1 1
TABLE ACCESS BY INDEX ROWID AR.HZ_LOCATIONS 1 59 1
INDEX UNIQUE SCAN AR.HZ_LOCATIONS_U1 1
NESTED LOOPS 1 144 8
NESTED LOOPS 1 85 7
NESTED LOOPS 1 51 6
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_LINES_B 1 25 3
INDEX UNIQUE SCAN OKC.OKC_K_LINES_B_U1 1 2
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_ITEMS 1 26 3
INDEX RANGE SCAN OKC.OKC_K_ITEMS_N1 1 2
TABLE ACCESS BY INDEX ROWID CSI.CSI_ITEM_INSTANCES 1 34 1
INDEX UNIQUE SCAN CSI.CSI_ITEM_INSTANCES_U01 1
TABLE ACCESS BY INDEX ROWID AR.HZ_LOCATIONS 1 59 1
INDEX UNIQUE SCAN AR.HZ_LOCATIONS_U1 1
NESTED LOOPS 1 161 8
NESTED LOOPS 1 85 7
NESTED LOOPS 1 51 6
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_LINES_B 1 25 3
INDEX UNIQUE SCAN OKC.OKC_K_LINES_B_U1 1 2
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_ITEMS 1 26 3
INDEX RANGE SCAN OKC.OKC_K_ITEMS_N1 1 2
TABLE ACCESS BY INDEX ROWID CSI.CSI_ITEM_INSTANCES 1 34 1
INDEX UNIQUE SCAN CSI.CSI_ITEM_INSTANCES_U01 1
TABLE ACCESS BY INDEX ROWID AR.HZ_PARTIES 1 76 1
INDEX UNIQUE SCAN AR.HZ_PARTIES_U1 1
TABLE ACCESS BY INDEX ROWID CSI.CSI_ITEM_INSTANCES 1 21 1
INDEX UNIQUE SCAN CSI.CSI_ITEM_INSTANCES_U01 1
And here is the SQL to join:
select * from xxdbd_contract_lines l, xxdbd_contract_flexfields f
where f.service_id (+) = l.service_id
and f.contract_number (+) = l.contract_number
and l.contract_number = 'NL0000014'
Operation Object Name Rows Bytes Cost Object Node In/Out PStart PStop
SELECT STATEMENT Optimizer Mode=CHOOSE 1 49221
HASH JOIN OUTER 1 38 K 49221
VIEW APPS.XXDBD_CONTRACT_LINES 1 19 K 96
NESTED LOOPS OUTER 1 1 K 96
NESTED LOOPS 1 358 94
NESTED LOOPS 1 345 93
NESTED LOOPS 1 332 92
NESTED LOOPS 1 311 91
NESTED LOOPS 1 285 88
NESTED LOOPS 448 72 K 88
NESTED LOOPS OUTER 1 78 4
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_HEADERS_B 1 46 3
INDEX RANGE SCAN OKC.OKC_K_HEADERS_B_U2 1 2
TABLE ACCESS BY INDEX ROWID HR.HR_ALL_ORGANIZATION_UNITS 1 32 1
INDEX UNIQUE SCAN HR.HR_ORGANIZATION_UNITS_PK 1
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_LINES_B 378 32 K 84
INDEX RANGE SCAN XXDBD.XXDBD_OKC_K_LINES_B_N10 378 16
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_LINES_B 1 119
INDEX RANGE SCAN OKC.OKC_K_LINES_B_N2 1 K 32
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_ITEMS 1 26 3
INDEX RANGE SCAN OKC.OKC_K_ITEMS_N1 1 2
TABLE ACCESS BY INDEX ROWID CSI.CSI_ITEM_INSTANCES 1 21 1
INDEX UNIQUE SCAN CSI.CSI_ITEM_INSTANCES_U01 1
TABLE ACCESS BY INDEX ROWID APPLSYS.FND_USER 1 13 1
INDEX UNIQUE SCAN APPLSYS.FND_USER_U1 1
TABLE ACCESS BY INDEX ROWID APPLSYS.FND_USER 1 13 1
INDEX UNIQUE SCAN APPLSYS.FND_USER_U1 1
VIEW APPS.XXDBD_OKS_INSTALL_INFO_V 1 861 2
UNION-ALL PARTITION
NESTED LOOPS 1 167 9
NESTED LOOPS 1 108 8
NESTED LOOPS 1 85 7
NESTED LOOPS 1 51 6
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_LINES_B 1 25 3
INDEX UNIQUE SCAN OKC.OKC_K_LINES_B_U1 1 2
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_ITEMS 1 26 3
INDEX RANGE SCAN OKC.OKC_K_ITEMS_N1 1 2
TABLE ACCESS BY INDEX ROWID CSI.CSI_ITEM_INSTANCES 1 34 1
INDEX UNIQUE SCAN CSI.CSI_ITEM_INSTANCES_U01 1
TABLE ACCESS BY INDEX ROWID AR.HZ_PARTY_SITES 1 23 1
INDEX UNIQUE SCAN AR.HZ_PARTY_SITES_U1 1
TABLE ACCESS BY INDEX ROWID AR.HZ_LOCATIONS 1 59 1
INDEX UNIQUE SCAN AR.HZ_LOCATIONS_U1 1
NESTED LOOPS 1 144 8
NESTED LOOPS 1 85 7
NESTED LOOPS 1 51 6
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_LINES_B 1 25 3
INDEX UNIQUE SCAN OKC.OKC_K_LINES_B_U1 1 2
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_ITEMS 1 26 3
INDEX RANGE SCAN OKC.OKC_K_ITEMS_N1 1 2
TABLE ACCESS BY INDEX ROWID CSI.CSI_ITEM_INSTANCES 1 34 1
INDEX UNIQUE SCAN CSI.CSI_ITEM_INSTANCES_U01 1
TABLE ACCESS BY INDEX ROWID AR.HZ_LOCATIONS 1 59 1
INDEX UNIQUE SCAN AR.HZ_LOCATIONS_U1 1
NESTED LOOPS 1 161 8
NESTED LOOPS 1 85 7
NESTED LOOPS 1 51 6
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_LINES_B 1 25 3
INDEX UNIQUE SCAN OKC.OKC_K_LINES_B_U1 1 2
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_ITEMS 1 26 3
INDEX RANGE SCAN OKC.OKC_K_ITEMS_N1 1 2
TABLE ACCESS BY INDEX ROWID CSI.CSI_ITEM_INSTANCES 1 34 1
INDEX UNIQUE SCAN CSI.CSI_ITEM_INSTANCES_U01 1
TABLE ACCESS BY INDEX ROWID AR.HZ_PARTIES 1 76 1
INDEX UNIQUE SCAN AR.HZ_PARTIES_U1 1
VIEW APPS.XXDBD_CONTRACT_FLEXFIELDS 6 112 K 49124
NESTED LOOPS OUTER 6 80 K 49124
VIEW 6 80 K 49112
HASH JOIN 6 1 K 49112
HASH JOIN 17 K 2 M 20214
TABLE ACCESS FULL OKC.OKC_K_HEADERS_B 5 K 175 K 37
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_LINES_B 17 K 1 M 20162
INDEX SKIP SCAN XXDBD.XXDBD_OKC_K_LINES_B_N10 39 17085
TABLE ACCESS FULL OKC.OKC_K_LINES_B 502 K 34 M 27803
VIEW PUSHED PREDICATE 1 107 2
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_LINES_B 42 3 K 216
NESTED LOOPS 50 5 K 219
TABLE ACCESS BY INDEX ROWID OKC.OKC_K_HEADERS_B 1 33 3
INDEX RANGE SCAN OKC.OKC_K_HEADERS_B_U2 1 2
INDEX RANGE SCAN OKC.OKC_K_LINES_B_N2 1 K 32
DECODE(l.attribute_category, 'Coverage Template Header', l.attribute3) Penalty_Bonus,
DECODE(l.attribute_category, 'Coverage Break', l.attribute1) Mon_Break_Start,
DECODE(l.attribute_category, 'Transaction Type', l.attribute1) Split_Covering,Uh oh, the dreaded entity attibute value, or generic, data model.
http://asktom.oracle.com/pls/ask/f?p=4950:8:::::F4950_P8_DISPLAYID:10678084117056
I am afraid slow performance is a built in feature of this database design, not much you can do in queries.
You could possibly create the views as materialized views and query those instead.
Quote from the linked article
But, how does it perform? Miserably, terribly, horribly. A simple "select
first_name, last_name from person" query is transformed into a 3-table join with
aggregates and all. Further, if the attributes are "NULLABLE" - that is, there
might not be a row in OBJECT_ATTRIBUTES for some attributes, you may have to
outer join instead of just joining which in some cases can remove more optimal
query plans from consideration.
Writing queries might look pretty straightforward, but it's impossible to do in
a performant fashion.
Query builder bug in outer joins ?
I understood that if you were joining two tables A and B, the following was a
LEFT OUTER JOIN
SELECT A.COL, B.COL
FROM A, B
WHERE A.ID = B.ID (+)
ie: a LEFT outer join has the (+) on the Right-hand table.
However, query builder puts the (+) on the Left-hand table.
Same for a RIGHT outer join - I think the (+) should be on the Left-hand table, but query builder puts it on the Right-hand table.
Cheers,
Andrew
(running Version 2.1.0.00.39)
Hi Andrew,
I just played a little with the query builder and created a join between two of my tables:
PROJECTS and ACTIVITIES, linked via KCC.
When I create a left outer join in query builder, I get the following result:
select "PROJECTS"."KCC" as "KCC"
from "ACTIVITIES" "ACTIVITIES",
"PROJECTS" "PROJECTS"
where "PROJECTS"."KCC"(+) ="ACTIVITIES"."KCC"
Which is correct: Left refers to the first table in the from clause (ACTIVITIES) and places the (+) on the other table!
Left and right refers to the order of tables in the from clause, not in the where clause. Query builder sorts the tables in FROM alphabetically, maybe this is differing from the graphical order in query builder.
Regards
Alex
Return all Groups for Outer Join + Count + Group By
I have two tables, TC and XEA. The relationship is one TC to many XEA. TC is a lookup table and has one field, the code field TCSI_CD. XEA has the same code field called BAM_TCSI, which is the joining key, and also another field, the date field, LOAD_DATE.
I want to generate a report counting the records in XEA and grouping by the code list in TC. When a TC code is not found in XEA, the report must show a count of zero. The SQL shown does not work, as codes not found in XEA are omitted. Thanks in advance for any help.
SELECT
TC.TCSI_CD,DECODE(COUNT(XEA.BAM_TCSI),NULL,0,COUNT(XEA.BAM_TCSI))
FROM
OB_TCSI_CD TC,
TEMP_OB_XEA_HIST XEA
WHERE
TC.TCSI_CD = XEA.BAM_TCSI(+) AND
XEA.LOAD_DATE > '1-JUN-2002'
GROUP BY
TC.TCSI_CD
You need to include a (+) after the load_date column. If you omit that, it negates the whole outer join and turns your query into an inner join. Then just a regular count will work, returning 0 for the null values. You also might want to use the to_date function, instead of relying on your session having the matching nls_date_format.
SELECT tc.tcsi_cd,
COUNT (xea.bam_tcsi)
FROM ob_tcsi_cd tc,
temp_ob_xea_hist xea
WHERE tc.tcsi_cd = xea.bam_tcsi (+)
AND xea.load_date (+) > TO_DATE ('1-JUN-2002', 'DD-MON-YYYY')
GROUP BY tc.tcsi_cd
How to merge 3 different query results using full outer join?
Hi all This is my my query for 2 results
with t1 as (
select trans.crAcc_id,trans.cr_amt,row_number() over (order by trans.head_id) rn from Acttrans trans,
Acttranhead head where trans.head_id in(select link_id from acttrans where head_id=12) and trans.crAcc_id!=0
and head.head_id=trans.head_id
t2 as (
select trans.drAcc_id,trans.dr_amt,head.[Vouc_No],head.[Vouc_Date] ,head.[Check_No],head.[Check_Date],head.[stat],row_number() over (order by trans.head_id) rn from Acttrans trans,
Acttranhead head where trans.head_id=12 and trans.drAcc_id!=0
and head.head_id=trans.head_id
select t1.crAcc_id, t1.cr_amt,t2.[Vouc_No],t2.[Vouc_Date] ,t2.[Check_No],t2.[Check_Date],t2.[stat],t2.drAcc_id,t2.dr_amt from t1
full outer join t2 on t1.rn = t2.rn
Query 3: SELECT [CrAcc_Id] FROM [KSSDATA].[dbo].[ActTrans] where head_id=12 and crAcc_id!=0
and i want to add Query3 result to the ABOVE RESULT but i am unable add third result using full outer join
Thanks
Balu D
>>>but i am unable add third result using full outer join
Do you get the error or wrong result?
Best Regards,Uri Dimant SQL Server MVP,
http://sqlblog.com/blogs/uri_dimant/
MS SQL optimization: MS SQL Development and Optimization
MS SQL Consulting:
Large scale of database and data cleansing
Remote DBA Services:
Improves MS SQL Database Performance
SQL Server Integration Services:
Business Intelligence
Query by example and outer join supported?
Does TopLink support outer joins when using query by example and cursored streams? I am having problems getting this to work. It seems to completely ignore the requested outer join.
I have tried several variations of what is below, but have never seen TopLink generate the outer join. This is against Oracle 9i on TopLink 9.0.4.5.
Customer 1->1 Address (using valueholder indirection)
ReadAllQuery q = new ReadAllQuery();
q.setReferenceClass(Customer.class);
QueryByExamplePolicy policy = new QueryByExamplePolicy();
policy.addSpecialOperation(String.class, "like");
q.setQueryByExamplePolicy(policy);
ExpressionBuilder builder = q.getExpressionBuilder();
Expression addressExp = builder.getAllowingNull("address");
q.addJoinedAttribute(addressExp);
q.addOrdering(addressExp.get("city").ascending());
q.useCursoredStream(end-start, end-start);
q.setExampleObject(exampleCustomer);
CursoredStream stream = (CursoredStream)s.executeQuery(q);
...iterate through the stream...
Note, that the database level relationship is expressed through a target foreign key.
( addressMapping.addTargetForeignKeyFieldName("ADDRESS.CUSTOMER_ID", "CUSTOMER.CUSTOMER_ID");)
Any help would be appreciated.
Thanks,
Kevin
Kevin,
I spoke too soon. All you need to do is use the getAllowingNull in the ordering expression and not use the addJoinedAttribute. With this you can use query-by-example with additional outer-joined ordering.
Here is an example based on the Employee demo:
ReadAllQuery raq = new ReadAllQuery(Employee.class);
ExpressionBuilder eb = raq.getExpressionBuilder();
raq.addOrdering(eb.getAllowingNull("address").get("city").ascending());
Employee exampleEmp = new Employee();
exampleEmp.setLastName("%");
// My default constructor populates the period so I'll null them so
// they are not included in the selection criteria of the example object
exampleEmp.getPeriod().setStartDate(null);
exampleEmp.getPeriod().setEndDate(null);
QueryByExamplePolicy policy = new QueryByExamplePolicy();
policy.addSpecialOperation(String.class, "like");
raq.setQueryByExamplePolicy(policy);
raq.setExampleObject(exampleEmp);
List emps = (List) session.executeQuery(raq);
I hope this helps,
Doug
Strange result for outer join with rownum
I'm using rownum in join condition of left outer join query but i'm getting strange results.
Query is:
Select * from table1 left outer join table2 on table1.id = table2.id or rownum=1
Data in table1 is
id
7
8
9
Data in table2 is
id
10
11
12
Result of above query in Oracle 9.2.0.1 is
table1.id table2.id
7 10
7 11
7 12
8 10
8 11
8 12
9 10
9 11
9 12
Even if change is rownum related condition to like rownum >2 even than i'm getting same result.
In case of inner join, the above condition gives results as required.
Can anybody explain the result or is it a bug?
could you please explain why you are using rownum.
You may have a look at the following link explaining rownum and you should understand why you got this result, keep in mind that you are using an OR condition.
http://download-west.oracle.com/docs/cd/B10501_01/server.920/a96540/sql_elements6a.htm#4295
Alternative for OUTER Join for use in fast refresh materialized view
Hi ,
I have two tables as :
CREATE TABLE TEST_SANDY1
COL1 NUMBER
CREATE TABLE TEST_SANDY2
COL1 NUMBER,
COL2 VARCHAR2(10 BYTE)
Data for the tables are :
INSERT INTO TEST_SANDY1 ( COL1 ) VALUES (
1);
INSERT INTO TEST_SANDY1 ( COL1 ) VALUES (
2);
INSERT INTO TEST_SANDY1 ( COL1 ) VALUES (
3);
COMMIT;
INSERT INTO TEST_SANDY2 ( COL1, COL2 ) VALUES (
1, 'a');
INSERT INTO TEST_SANDY2 ( COL1, COL2 ) VALUES (
2, 'b');
INSERT INTO TEST_SANDY2 ( COL1, COL2 ) VALUES (
4, 'd');
COMMIT;
Now when I run the following select statement :
select
b.col1
from
test_sandy1 a,
test_sandy2 b
where
b.COL1 = a.COL1(+)
I get :
COL1
1
2
4
I want to build a materialized view to generate the same values but it has to be fast refresh. But since I am using outer join I am unable to create a fast refresh one.
Can someone suggest an alternate select to create fast refresh materialized view.
Thanks,
Sandipan
The select statement was not fitting my problem , so I'll change it as :
select
a.col1, nvl(b.col2, 'DEFAULT')
from
test_sandy1 a,
test_sandy2 b
where
b.COL1(+) = a.COL1
I get :
COL1 VAL
1 a
2 b
3 DEFAULT
How do I this ?
Newbie: Syntax for OUTER joins
Hello there,
I'm trying to write some very simple ANSI outer joins using quest's TOAD software but I keep running into syntax errors.
Take the following classic text book example
Find all customers who have not placed an order
SELECT c.customerid, o.orderid
FROM customers c
LEFT OUTER JOIN orders o
ON c.customerid = o.customerid
WHERE o.orderid IS NULL
alternative syntax supported by SQL Server
SELECT c.customerid, o.orderid
FROM customers c, orders o
WHERE c.customerid *= o.customerid AND o.orderid IS NULL
How do you write the above style of statements. Can you write RIGHT JOIN and FULL JOIN statements? What about CROSS JOIN statements
Cheers,
Colin Rippey
null
SELECT c.customerid, o.orderid
FROM customers c, orders o
WHERE
c.customerid = o.customerid(+) and
o.orderid IS NULL
null
Hello expert,
following statement is left outer join or right outer join? and comparing with statement " from PCM RIGHT OUTER JOIN R ON PCM.practice_state_code = R.practice_state_code ", whose performance is better? Appreciate very much.
PCM.practice_state_code (+) = R.practice_state_code
Hi,
843178 wrote:
Hello expert,
following statement is left outer join or right outer join?
PCM.practice_state_code (+) = R.practice_state_codeNeither. It's the old outer join notation. Using that syntax, the order in which you put the tables in the FROM clause doesn't matter.
and comparing with statement " from PCM RIGHT OUTER JOIN R ON PCM.practice_state_code = R.practice_state_code ", whose performance is better? They're equal.
Help need for Outer Join Query Mysterious Query...
I have two table parent tablea and child tableb
Now
tableb has field by name table_id,keyword_name,keyword_value
tablea has field by name
table_id,table_name
I need a query which would retrieve union of this two set...(for table_name)
1)all table_name having keyword_name='abc' and value=12
2)all the table_name that does not have 'abc' as keyword in tableb.....
Please let me know how it can be done....
Ok then, try this.
select
a.table_name
from
tablea a, tableb b
where
a.table_id = b.table_id
and b.keyword_name = 'abc'
and b.value = 12
union
select
c.table_name
from
tablea c
where
not exists (select 1 from tableb d
where d.table_id = c.table_id
and d.keyword_name = 'abc'
) ;To get a faster answer and avoid wrong guesses, I always find it helpful to show sample data and sample output when asking a SQL question. For example:
TableA -----------------
table_id table_name
1 AAA
2 BBB
3 CCC
4 DDD
5 EEE
TableB -----------------
table_id keyword_name value
1 abc 12
1 def 23
2 abc 13
4 def 12
5 abc 13
5 def 12
Desired output of query: -----------------
AAA
CCC
DDD
Family Plan Question for iPhone 3G
My brother and I share a family plan together. He already has a first generation iPhone on the account and I am getting the 3G iphone when is comes out.
Will our plan go up 30 dollars when I get the iPhone setup or will it go up just 10 dollars for me adding the 3g data price on the account?
This probably didn't make any sense lol, but any help would be appreciated!
Thanks,
Brendan
Info I've been getting from ATT:
2g(original) remains 20 bucks for data and 200 text message
3g add 30 dollars to account and if you want text - 5 bucks for 200 messages.
10 dollars more would be only if you upgraded to 3g and gave away old iphone.
since you're keeping 2 iphones to account you need data for each iphone and its corresponding data plan. You will renew a 2 year contract with att for 3g and if eligible for upgrade you pay discount price and 18 dollars upgrade fee to appear next bill !
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