Sql query slow due to case statement on Joins
Hi
The sql query runs very slow for 30 min when the below case statement is added on the joins. Could you please let me know how to tune it. if the case statement is not there then it runs only for 1 min.
*( CASE*
WHEN PO_DIST_GL_CODE_COMB.SEGMENT2 <> '1000'
THEN PO_DIST_GL_CODE_COMB.SEGMENT1 || PO_DIST_GL_CODE_COMB.SEGMENT2 || '_' || NVL(PO_DIST_GL_CODE_COMB.SEGMENT6,'000')
WHEN DT_REQ_ALL.EMPMGMTCD IS NOT NULL AND
PO_DIST_GL_CODE_COMB.SEGMENT2 = '1000'
THEN DT_REQ_ALL.EMPMGMTCD
END =DB2.DB2_FDW_MGMT_V.MH_CHILD )
SELECT DISTINCT
D.DB2_FDW_MGMT_V.RC_PARENT,
DT_REQ_ALL.FULL_NAME,
DT_REQ_ALL.EMP_COMPANY_CODE,
DT_REQ_ALL.EMP_COST_CENTER,
PO.PO_VENDORS.VENDOR_NAME,
PO_PO_HEADERS_ALL2.SEGMENT1,
PO_PO_HEADERS_ALL2.CREATION_DATE,
PO_DIST_GL_CODE_COMB.SEGMENT1,
PO_DIST_GL_CODE_COMB.SEGMENT2,
PO_PO_HEADERS_ALL2.CURRENCY_CODE,
PO_INV_DIST_ALL.INVOICE_NUM,
PO_INV_DIST_ALL.INVOICE_DATE,
(PO_INV_DIST_ALL.INVOICE_AMOUNT* PO_Rates_GL_DR.CONVERSION_RATE),
(NVL(to_number(PO_DIST_ALL.AMOUNT_BILLED),0) * PO_Rates_GL_DR.CONVERSION_RATE),
PO_LINES_LOC.LINE_NUM,
GL.GL_SETS_OF_BOOKS.NAME,
CASE
WHEN TRUNC(PO_PO_HEADERS_ALL2.CREATION_DATE) > PO_INV_DIST_ALL.INVOICE_DATE
THEN 1
ELSE 0
END ,
PO.PO_REQUISITION_LINES_ALL.LINE_LOCATION_ID,
TRUNC(PO_PO_HEADERS_ALL2.CREATION_DATE,'WW') + 8 WEEK_Ending
FROM
DB2.DB2_FDW_MGMT_V,
PO.PO_VENDORS,
PO.PO_HEADERS_ALL PO_PO_HEADERS_ALL2,
GL.GL_CODE_COMBINATIONS PO_DIST_GL_CODE_COMB,
AP.AP_INVOICES_ALL PO_INV_DIST_ALL,
PO.PO_DISTRIBUTIONS_ALL PO_DIST_ALL,
PO.PO_LINES_ALL PO_LINES_LOC,
GL.GL_SETS_OF_BOOKS,
PO.PO_REQUISITION_LINES_ALL,
PO.PO_LINE_LOCATIONS_ALL,
AP.AP_INVOICE_DISTRIBUTIONS_ALL PO_DIST_INV_DIST_ALL,
APPS.HR_OPERATING_UNITS,
PO.PO_REQ_DISTRIBUTIONS_ALL,
SELECT DISTINCT
PO_RDA.DISTRIBUTION_ID,
PO_RLA.requisition_line_id,
PO_RHA.DESCRIPTION PO_Descr,
PO_RHA.NOTE_TO_AUTHORIZER PO_Justification,
Req_Emp.FULL_NAME,
GL_CC.SEGMENT1 Req_Company_Code,
GL_CC.SEGMENT2 Req_Cost_Center,
Req_Emp_CC.SEGMENT1 Emp_Company_Code,
Req_Emp_CC.SEGMENT2 Emp_Cost_Center,
(Case
When GL_CC.SEGMENT2 <> 8000
Then TRUNC(GL_CC.SEGMENT1) || TRUNC(GL_CC.SEGMENT2) || '_' || NVL(GL_CC.SEGMENT6,'000')
Else TRUNC(Req_Emp_CC.SEGMENT1) || TRUNC(Req_Emp_CC.SEGMENT2) || '_' || NVL(Req_Emp_CC.SEGMENT6,'000')
End) EmpMgmtCD
FROM
PO.po_requisition_lines_all PO_rla,
PO.po_requisition_headers_all PO_rha,
PO.PO_REQ_DISTRIBUTIONS_ALL po_RDA,
GL.GL_CODE_COMBINATIONS gl_cc,
HR.PER_ALL_PEOPLE_F Req_Emp,
HR.PER_ALL_ASSIGNMENTS_F Req_Emp_Assign,
HR.hr_all_organization_units Req_Emp_Org,
HR.pay_cost_allocation_keyflex Req_Emp_CC
WHERE
PO_RDA.CODE_COMBINATION_ID = GL_CC.CODE_COMBINATION_ID and
PO_RLA.REQUISITION_LINE_ID = PO_RDA.REQUISITION_LINE_ID AND
PO_RLA.to_person_id = Req_Emp.PERSON_ID AND
PO_RLA.REQUISITION_HEADER_ID = PO_RHA.REQUISITION_HEADER_ID AND
(trunc(PO_rla.CREATION_DATE) between Req_Emp.effective_start_date and Req_Emp.effective_end_date OR
Req_Emp.effective_start_date IS NULL) AND
Req_Emp.PERSON_ID = Req_Emp_Assign.PERSON_ID AND
Req_Emp_Assign.organization_id = Req_Emp_Org.organization_id AND
(trunc(PO_rla.CREATION_DATE) between Req_Emp_Assign.effective_start_date and Req_Emp_Assign.effective_end_date OR
Req_Emp_Assign.effective_start_date IS NULL) AND
Req_Emp_Assign.primary_flag = 'Y' AND
Req_Emp_Assign.assignment_type = 'E' AND
Req_Emp_Org.cost_allocation_keyflex_id = Req_Emp_CC.cost_allocation_keyflex_id
) DT_REQ_ALL,
SELECT
FROM_CURRENCY,
TO_CURRENCY,
CONVERSION_DATE,
CONVERSION_RATE
FROM GL.GL_DAILY_RATES
UNION
SELECT Distinct
'USD',
'USD',
CONVERSION_DATE,
1
FROM GL.GL_DAILY_RATES
) PO_Rates_GL_DR
WHERE
( PO_DIST_GL_CODE_COMB.CODE_COMBINATION_ID=PO_DIST_ALL.CODE_COMBINATION_ID )
AND ( PO_DIST_ALL.LINE_LOCATION_ID=PO.PO_LINE_LOCATIONS_ALL.LINE_LOCATION_ID )
AND ( PO_PO_HEADERS_ALL2.VENDOR_ID=PO.PO_VENDORS.VENDOR_ID )
AND ( PO_PO_HEADERS_ALL2.ORG_ID=APPS.HR_OPERATING_UNITS.ORGANIZATION_ID )
AND ( GL.GL_SETS_OF_BOOKS.SET_OF_BOOKS_ID=APPS.HR_OPERATING_UNITS.SET_OF_BOOKS_ID )
AND ( PO_PO_HEADERS_ALL2.CURRENCY_CODE=PO_Rates_GL_DR.FROM_CURRENCY )
AND ( trunc(PO_PO_HEADERS_ALL2.CREATION_DATE)=PO_Rates_GL_DR.CONVERSION_DATE )
AND ( PO_DIST_ALL.REQ_DISTRIBUTION_ID=PO.PO_REQ_DISTRIBUTIONS_ALL.DISTRIBUTION_ID(+) )
AND ( PO.PO_REQ_DISTRIBUTIONS_ALL.REQUISITION_LINE_ID=PO.PO_REQUISITION_LINES_ALL.REQUISITION_LINE_ID(+) )
AND ( PO_LINES_LOC.PO_HEADER_ID=PO_PO_HEADERS_ALL2.PO_HEADER_ID )
AND ( PO.PO_LINE_LOCATIONS_ALL.PO_LINE_ID=PO_LINES_LOC.PO_LINE_ID )
AND ( PO_DIST_ALL.REQ_DISTRIBUTION_ID=DT_REQ_ALL.DISTRIBUTION_ID(+) )
AND ( PO_DIST_ALL.PO_DISTRIBUTION_ID=PO_DIST_INV_DIST_ALL.PO_DISTRIBUTION_ID(+) )
AND ( PO_INV_DIST_ALL.INVOICE_ID(+)=PO_DIST_INV_DIST_ALL.INVOICE_ID )
AND ( PO_INV_DIST_ALL.SOURCE(+) <> 'XML GATEWAY' )
AND
( NVL(PO_PO_HEADERS_ALL2.CANCEL_FLAG,'N') <> 'Y' )
AND
( NVL(PO_PO_HEADERS_ALL2.CLOSED_CODE, 'OPEN') <> 'FINALLY CLOSED' )
AND
( NVL(PO_PO_HEADERS_ALL2.AUTHORIZATION_STATUS,'IN PROCESS') <> 'REJECTED' )
AND
( TRUNC(PO_PO_HEADERS_ALL2.CREATION_DATE) BETWEEN TO_DATE('01-jan-2011') AND TO_DATE('04-jan-2011') )
AND
PO_Rates_GL_DR.TO_CURRENCY = 'USD'
AND
DB2.DB2_FDW_MGMT_V.RC_PARENT In ( 'Unavailable','Corp','Commercial' )
AND
( CASE
WHEN PO_DIST_GL_CODE_COMB.SEGMENT2 <> '1000'
THEN PO_DIST_GL_CODE_COMB.SEGMENT1 || PO_DIST_GL_CODE_COMB.SEGMENT2 || '_' || NVL(PO_DIST_GL_CODE_COMB.SEGMENT6,'000')
WHEN DT_REQ_ALL.EMPMGMTCD IS NOT NULL AND
PO_DIST_GL_CODE_COMB.SEGMENT2 = '1000'
THEN DT_REQ_ALL.EMPMGMTCD
END =DB2.DB2_FDW_MGMT_V.MH_CHILD )Explain plan. sorry can't get the explain plan from sql. this is from toad.
Plan
SELECT STATEMENT ALL_ROWSCost: 53,932 Bytes: 2,607 Cardinality: 1
79 HASH UNIQUE Cost: 53,932 Bytes: 2,607 Cardinality: 1
78 NESTED LOOPS OUTER Cost: 53,931 Bytes: 2,607 Cardinality: 1
75 NESTED LOOPS OUTER Cost: 53,928 Bytes: 2,560 Cardinality: 1
72 NESTED LOOPS Cost: 53,902 Bytes: 2,552 Cardinality: 1
69 NESTED LOOPS OUTER Cost: 53,900 Bytes: 2,533 Cardinality: 1
66 NESTED LOOPS OUTER Cost: 53,898 Bytes: 2,521 Cardinality: 1
63 HASH JOIN OUTER Cost: 53,896 Bytes: 2,509 Cardinality: 1
40 TABLE ACCESS BY INDEX ROWID TABLE PO.PO_DISTRIBUTIONS_ALL Cost: 3 Bytes: 26 Cardinality: 1
39 NESTED LOOPS Cost: 17,076 Bytes: 2,400 Cardinality: 1
37 NESTED LOOPS Cost: 17,073 Bytes: 2,374 Cardinality: 1
34 NESTED LOOPS Cost: 17,070 Bytes: 2,362 Cardinality: 1
31 NESTED LOOPS Cost: 17,066 Bytes: 2,347 Cardinality: 1
29 NESTED LOOPS Cost: 17,066 Bytes: 2,339 Cardinality: 1
26 NESTED LOOPS Cost: 17,065 Bytes: 2,312 Cardinality: 1
23 NESTED LOOPS Cost: 17,064 Bytes: 2,287 Cardinality: 1
20 NESTED LOOPS Cost: 17,062 Bytes: 2,261 Cardinality: 1
17 NESTED LOOPS Cost: 17,056 Bytes: 6,678 Cardinality: 3
15 HASH JOIN Cost: 17,056 Bytes: 6,663 Cardinality: 3
13 MERGE JOIN CARTESIAN Cost: 135 Bytes: 30,352 Cardinality: 14
5 VIEW VIEW DB2.DB2_FDW_MGMT_V Cost: 4 Bytes: 2,128 Cardinality: 1
4 SORT UNIQUE Cost: 4 Cardinality: 1
3 UNION-ALL
1 REMOTE REMOTE SERIAL_FROM_REMOTE PRDFDW.WORLD
2 FAST DUAL Cost: 3 Cardinality: 1
12 BUFFER SORT Cost: 135 Bytes: 560 Cardinality: 14
11 VIEW DB2. Cost: 131 Bytes: 560 Cardinality: 14
10 SORT UNIQUE Cost: 131 Bytes: 310 Cardinality: 14
9 UNION-ALL
7 TABLE ACCESS BY INDEX ROWID TABLE GL.GL_DAILY_RATES Cost: 65 Bytes: 270 Cardinality: 9
6 INDEX SKIP SCAN INDEX (UNIQUE) GL.GL_DAILY_RATES_U1 Cost: 64 Cardinality: 1
8 INDEX SKIP SCAN INDEX (UNIQUE) GL.GL_DAILY_RATES_U1 Cost: 64 Bytes: 4,368 Cardinality: 546
14 TABLE ACCESS FULL TABLE PO.PO_HEADERS_ALL Cost: 16,920 Bytes: 32,754 Cardinality: 618
16 INDEX UNIQUE SCAN INDEX (UNIQUE) HR.HR_ORGANIZATION_UNITS_PK Cost: 0 Bytes: 5 Cardinality: 1
19 TABLE ACCESS BY INDEX ROWID TABLE HR.HR_ORGANIZATION_INFORMATION Cost: 2 Bytes: 35 Cardinality: 1
18 INDEX RANGE SCAN INDEX HR.HR_ORGANIZATION_INFORMATIO_FK2 Cost: 1 Cardinality: 2
22 TABLE ACCESS BY INDEX ROWID TABLE HR.HR_ORGANIZATION_INFORMATION Cost: 2 Bytes: 26 Cardinality: 1
21 INDEX RANGE SCAN INDEX HR.HR_ORGANIZATION_INFORMATIO_FK2 Cost: 1 Cardinality: 1
25 TABLE ACCESS BY INDEX ROWID TABLE GL.GL_SETS_OF_BOOKS Cost: 1 Bytes: 25 Cardinality: 1
24 INDEX UNIQUE SCAN INDEX (UNIQUE) GL.GL_SETS_OF_BOOKS_U2 Cost: 0 Cardinality: 1
28 TABLE ACCESS BY INDEX ROWID TABLE PO.PO_VENDORS Cost: 1 Bytes: 27 Cardinality: 1
27 INDEX UNIQUE SCAN INDEX (UNIQUE) PO.PO_VENDORS_U1 Cost: 0 Cardinality: 1
30 INDEX UNIQUE SCAN INDEX (UNIQUE) HR.HR_ALL_ORGANIZATION_UNTS_TL_PK Cost: 0 Bytes: 8 Cardinality: 1
33 TABLE ACCESS BY INDEX ROWID TABLE PO.PO_LINES_ALL Cost: 4 Bytes: 60 Cardinality: 4
32 INDEX RANGE SCAN INDEX (UNIQUE) PO.PO_LINES_U2 Cost: 2 Cardinality: 4
36 TABLE ACCESS BY INDEX ROWID TABLE PO.PO_LINE_LOCATIONS_ALL Cost: 3 Bytes: 12 Cardinality: 1
35 INDEX RANGE SCAN INDEX PO.PO_LINE_LOCATIONS_N1 Cost: 2 Cardinality: 1
38 INDEX RANGE SCAN INDEX PO.PO_DISTRIBUTIONS_N1 Cost: 2 Cardinality: 1
62 VIEW DB2. Cost: 36,819 Bytes: 1,090 Cardinality: 10
61 HASH UNIQUE Cost: 36,819 Bytes: 2,580 Cardinality: 10
60 NESTED LOOPS Cost: 36,818 Bytes: 2,580 Cardinality: 10
57 NESTED LOOPS Cost: 36,798 Bytes: 2,390 Cardinality: 10
54 NESTED LOOPS Cost: 36,768 Bytes: 2,220 Cardinality: 10
51 NESTED LOOPS Cost: 36,758 Bytes: 1,510 Cardinality: 10
48 NESTED LOOPS Cost: 36,747 Bytes: 1,050 Cardinality: 10
45 HASH JOIN Cost: 36,737 Bytes: 960 Cardinality: 10
43 HASH JOIN Cost: 34,602 Bytes: 230,340 Cardinality: 3,490
41 TABLE ACCESS FULL TABLE HR.PER_ALL_PEOPLE_F Cost: 1,284 Bytes: 1,848,420 Cardinality: 44,010
42 TABLE ACCESS FULL TABLE PO.PO_REQUISITION_LINES_ALL Cost: 31,802 Bytes: 18,340,080 Cardinality: 764,170
44 TABLE ACCESS FULL TABLE HR.PER_ALL_ASSIGNMENTS_F Cost: 2,134 Bytes: 822,540 Cardinality: 27,418
47 TABLE ACCESS BY INDEX ROWID TABLE HR.HR_ALL_ORGANIZATION_UNITS Cost: 1 Bytes: 9 Cardinality: 1
46 INDEX UNIQUE SCAN INDEX (UNIQUE) HR.HR_ORGANIZATION_UNITS_PK Cost: 0 Cardinality: 1
50 TABLE ACCESS BY INDEX ROWID TABLE HR.PAY_COST_ALLOCATION_KEYFLEX Cost: 1 Bytes: 46 Cardinality: 1
49 INDEX UNIQUE SCAN INDEX (UNIQUE) HR.PAY_COST_ALLOCATION_KEYFLE_PK Cost: 0 Cardinality: 1
53 TABLE ACCESS BY INDEX ROWID TABLE PO.PO_REQUISITION_HEADERS_ALL Cost: 1 Bytes: 71 Cardinality: 1
52 INDEX UNIQUE SCAN INDEX (UNIQUE) PO.PO_REQUISITION_HEADERS_U1 Cost: 0 Cardinality: 1
56 TABLE ACCESS BY INDEX ROWID TABLE PO.PO_REQ_DISTRIBUTIONS_ALL Cost: 3 Bytes: 17 Cardinality: 1
55 INDEX RANGE SCAN INDEX PO.PO_REQ_DISTRIBUTIONS_N1 Cost: 2 Cardinality: 1
59 TABLE ACCESS BY INDEX ROWID TABLE GL.GL_CODE_COMBINATIONS Cost: 2 Bytes: 19 Cardinality: 1
58 INDEX UNIQUE SCAN INDEX (UNIQUE) GL.GL_CODE_COMBINATIONS_U1 Cost: 1 Cardinality: 1
65 TABLE ACCESS BY INDEX ROWID TABLE PO.PO_REQ_DISTRIBUTIONS_ALL Cost: 2 Bytes: 12 Cardinality: 1
64 INDEX UNIQUE SCAN INDEX (UNIQUE) PO.PO_REQ_DISTRIBUTIONS_U1 Cost: 1 Cardinality: 1
68 TABLE ACCESS BY INDEX ROWID TABLE PO.PO_REQUISITION_LINES_ALL Cost: 2 Bytes: 12 Cardinality: 1
67 INDEX UNIQUE SCAN INDEX (UNIQUE) PO.PO_REQUISITION_LINES_U1 Cost: 1 Cardinality: 1
71 TABLE ACCESS BY INDEX ROWID TABLE GL.GL_CODE_COMBINATIONS Cost: 2 Bytes: 19 Cardinality: 1
70 INDEX UNIQUE SCAN INDEX (UNIQUE) GL.GL_CODE_COMBINATIONS_U1 Cost: 1 Cardinality: 1
74 TABLE ACCESS BY INDEX ROWID TABLE AP.AP_INVOICE_DISTRIBUTIONS_ALL Cost: 26 Bytes: 16 Cardinality: 2
73 INDEX RANGE SCAN INDEX AP.AP_INVOICE_DISTRIBUTIONS_N7 Cost: 2 Cardinality: 37
77 TABLE ACCESS BY INDEX ROWID TABLE AP.AP_INVOICES_ALL Cost: 3 Bytes: 47 Cardinality: 1
76 INDEX RANGE SCAN INDEX (UNIQUE) AP.AP_INVOICES_U1 Cost: 2 Cardinality: 1 Thanks
Forming a new table "new_table" with 3 tables which particiapate in CASE statement logic.
with DT_REQ_ALL as
SELECT DISTINCT
PO_RDA.DISTRIBUTION_ID,
PO_RLA.requisition_line_id,
PO_RHA.DESCRIPTION PO_Descr,
PO_RHA.NOTE_TO_AUTHORIZER PO_Justification,
Req_Emp.FULL_NAME,
GL_CC.SEGMENT1 Req_Company_Code,
GL_CC.SEGMENT2 Req_Cost_Center,
Req_Emp_CC.SEGMENT1 Emp_Company_Code,
Req_Emp_CC.SEGMENT2 Emp_Cost_Center,
(Case
When GL_CC.SEGMENT2 8000
Then TRUNC(GL_CC.SEGMENT1) || TRUNC(GL_CC.SEGMENT2) || '_' || NVL(GL_CC.SEGMENT6,'000')
Else TRUNC(Req_Emp_CC.SEGMENT1) || TRUNC(Req_Emp_CC.SEGMENT2) || '_' || NVL(Req_Emp_CC.SEGMENT6,'000')
End) EmpMgmtCD
FROM
PO.po_requisition_lines_all PO_rla,
PO.po_requisition_headers_all PO_rha,
PO.PO_REQ_DISTRIBUTIONS_ALL po_RDA,
GL.GL_CODE_COMBINATIONS gl_cc,
HR.PER_ALL_PEOPLE_F Req_Emp,
HR.PER_ALL_ASSIGNMENTS_F Req_Emp_Assign,
HR.hr_all_organization_units Req_Emp_Org,
HR.pay_cost_allocation_keyflex Req_Emp_CC
WHERE
PO_RDA.CODE_COMBINATION_ID = GL_CC.CODE_COMBINATION_ID and
PO_RLA.REQUISITION_LINE_ID = PO_RDA.REQUISITION_LINE_ID AND
PO_RLA.to_person_id = Req_Emp.PERSON_ID AND
PO_RLA.REQUISITION_HEADER_ID = PO_RHA.REQUISITION_HEADER_ID AND
(trunc(PO_rla.CREATION_DATE) between Req_Emp.effective_start_date and Req_Emp.effective_end_date OR
Req_Emp.effective_start_date IS NULL) AND
Req_Emp.PERSON_ID = Req_Emp_Assign.PERSON_ID AND
Req_Emp_Assign.organization_id = Req_Emp_Org.organization_id AND
(trunc(PO_rla.CREATION_DATE) between Req_Emp_Assign.effective_start_date and Req_Emp_Assign.effective_end_date OR
Req_Emp_Assign.effective_start_date IS NULL) AND
Req_Emp_Assign.primary_flag = 'Y' AND
Req_Emp_Assign.assignment_type = 'E' AND
Req_Emp_Org.cost_allocation_keyflex_id = Req_Emp_CC.cost_allocation_keyflex_id
SELECT DISTINCT
D.DB2_FDW_MGMT_V.RC_PARENT,
DT_REQ_ALL.FULL_NAME,
DT_REQ_ALL.EMP_COMPANY_CODE,
DT_REQ_ALL.EMP_COST_CENTER,
PO.PO_VENDORS.VENDOR_NAME,
PO_PO_HEADERS_ALL2.SEGMENT1,
PO_PO_HEADERS_ALL2.CREATION_DATE,
PO_DIST_GL_CODE_COMB.SEGMENT1,
PO_DIST_GL_CODE_COMB.SEGMENT2,
PO_PO_HEADERS_ALL2.CURRENCY_CODE,
PO_INV_DIST_ALL.INVOICE_NUM,
PO_INV_DIST_ALL.INVOICE_DATE,
(PO_INV_DIST_ALL.INVOICE_AMOUNT* PO_Rates_GL_DR.CONVERSION_RATE),
(NVL(to_number(PO_DIST_ALL.AMOUNT_BILLED),0) * PO_Rates_GL_DR.CONVERSION_RATE),
PO_LINES_LOC.LINE_NUM,
GL.GL_SETS_OF_BOOKS.NAME,
CASE
WHEN TRUNC(PO_PO_HEADERS_ALL2.CREATION_DATE) > PO_INV_DIST_ALL.INVOICE_DATE
THEN 1
ELSE 0
END ,
PO.PO_REQUISITION_LINES_ALL.LINE_LOCATION_ID,
TRUNC(PO_PO_HEADERS_ALL2.CREATION_DATE,'WW') + 8 WEEK_Ending
FROM
( SELECT * FROM
DB2.DB2_FDW_MGMT_V,
GL.GL_CODE_COMBINATIONS PO_DIST_GL_CODE_COMB,
DT_REQ_ALL
WHERE
DB2.DB2_FDW_MGMT_V.RC_PARENT In ( 'Unavailable','Corp','Commercial' )
AND
CASE
WHEN PO_DIST_GL_CODE_COMB.SEGMENT2 <> '1000'
THEN PO_DIST_GL_CODE_COMB.SEGMENT1 || PO_DIST_GL_CODE_COMB.SEGMENT2 || '_' || NVL(PO_DIST_GL_CODE_COMB.SEGMENT6,'000')
WHEN DT_REQ_ALL.EMPMGMTCD IS NOT NULL AND
PO_DIST_GL_CODE_COMB.SEGMENT2 = '1000'
THEN DT_REQ_ALL.EMPMGMTCD
END =DB2.DB2_FDW_MGMT_V.MH_CHILD
) new_table,
PO.PO_VENDORS,
PO.PO_HEADERS_ALL PO_PO_HEADERS_ALL2,
AP.AP_INVOICES_ALL PO_INV_DIST_ALL,
PO.PO_DISTRIBUTIONS_ALL PO_DIST_ALL,
PO.PO_LINES_ALL PO_LINES_LOC,
GL.GL_SETS_OF_BOOKS,
PO.PO_REQUISITION_LINES_ALL,
PO.PO_LINE_LOCATIONS_ALL,
AP.AP_INVOICE_DISTRIBUTIONS_ALL PO_DIST_INV_DIST_ALL,
APPS.HR_OPERATING_UNITS,
PO.PO_REQ_DISTRIBUTIONS_ALL,
SELECT
FROM_CURRENCY,
TO_CURRENCY,
CONVERSION_DATE,
CONVERSION_RATE
FROM GL.GL_DAILY_RATES
UNION
SELECT Distinct
'USD',
'USD',
CONVERSION_DATE,
1
FROM GL.GL_DAILY_RATES
) PO_Rates_GL_DR
WHERE
( PO_DIST_GL_CODE_COMB.CODE_COMBINATION_ID=PO_DIST_ALL.CODE_COMBINATION_ID )
AND ( PO_DIST_ALL.LINE_LOCATION_ID=PO.PO_LINE_LOCATIONS_ALL.LINE_LOCATION_ID )
AND ( PO_PO_HEADERS_ALL2.VENDOR_ID=PO.PO_VENDORS.VENDOR_ID )
AND ( PO_PO_HEADERS_ALL2.ORG_ID=APPS.HR_OPERATING_UNITS.ORGANIZATION_ID )
AND ( GL.GL_SETS_OF_BOOKS.SET_OF_BOOKS_ID=APPS.HR_OPERATING_UNITS.SET_OF_BOOKS_ID )
AND ( PO_PO_HEADERS_ALL2.CURRENCY_CODE=PO_Rates_GL_DR.FROM_CURRENCY )
AND ( trunc(PO_PO_HEADERS_ALL2.CREATION_DATE)=PO_Rates_GL_DR.CONVERSION_DATE )
AND ( PO_DIST_ALL.REQ_DISTRIBUTION_ID=PO.PO_REQ_DISTRIBUTIONS_ALL.DISTRIBUTION_ID(+) )
AND ( PO.PO_REQ_DISTRIBUTIONS_ALL.REQUISITION_LINE_ID=PO.PO_REQUISITION_LINES_ALL.REQUISITION_LINE_ID(+) )
AND ( PO_LINES_LOC.PO_HEADER_ID=PO_PO_HEADERS_ALL2.PO_HEADER_ID )
AND ( PO.PO_LINE_LOCATIONS_ALL.PO_LINE_ID=PO_LINES_LOC.PO_LINE_ID )
AND ( PO_DIST_ALL.REQ_DISTRIBUTION_ID=DT_REQ_ALL.DISTRIBUTION_ID(+) )
AND ( PO_DIST_ALL.PO_DISTRIBUTION_ID=PO_DIST_INV_DIST_ALL.PO_DISTRIBUTION_ID(+) )
AND ( PO_INV_DIST_ALL.INVOICE_ID(+)=PO_DIST_INV_DIST_ALL.INVOICE_ID )
AND ( PO_INV_DIST_ALL.SOURCE(+) 'XML GATEWAY' )
AND
( NVL(PO_PO_HEADERS_ALL2.CANCEL_FLAG,'N') 'Y' )
AND
( NVL(PO_PO_HEADERS_ALL2.CLOSED_CODE, 'OPEN') 'FINALLY CLOSED' )
AND
( NVL(PO_PO_HEADERS_ALL2.AUTHORIZATION_STATUS,'IN PROCESS') 'REJECTED' )
AND
( TRUNC(PO_PO_HEADERS_ALL2.CREATION_DATE) BETWEEN TO_DATE('01-jan-2011') AND TO_DATE('04-jan-2011') )
AND
PO_Rates_GL_DR.TO_CURRENCY = 'USD'
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Sql query slowness due to rank and columns with null values:
Sql query slowness due to rank and columns with null values:
I have the following table in database with around 10 millions records:
Declaration:
create table PropertyOwners (
[Key] int not null primary key,
PropertyKey int not null,
BoughtDate DateTime,
OwnerKey int null,
GroupKey int null
go
[Key] is primary key and combination of PropertyKey, BoughtDate, OwnerKey and GroupKey is unique.
With the following index:
CREATE NONCLUSTERED INDEX [IX_PropertyOwners] ON [dbo].[PropertyOwners]
[PropertyKey] ASC,
[BoughtDate] DESC,
[OwnerKey] DESC,
[GroupKey] DESC
go
Description of the case:
For single BoughtDate one property can belong to multiple owners or single group, for single record there can either be OwnerKey or GroupKey but not both so one of them will be null for each record. I am trying to retrieve the data from the table using
following query for the OwnerKey. If there are same property rows for owners and group at the same time than the rows having OwnerKey with be preferred, that is why I am using "OwnerKey desc" in Rank function.
declare @ownerKey int = 40000
select PropertyKey, BoughtDate, OwnerKey, GroupKey
from (
select PropertyKey, BoughtDate, OwnerKey, GroupKey,
RANK() over (partition by PropertyKey order by BoughtDate desc, OwnerKey desc, GroupKey desc) as [Rank]
from PropertyOwners
) as result
where result.[Rank]=1 and result.[OwnerKey]=@ownerKey
It is taking 2-3 seconds to get the records which is too slow, similar time it is taking as I try to get the records using the GroupKey. But when I tried to get the records for the PropertyKey with the same query, it is executing in 10 milliseconds.
May be the slowness is due to as OwnerKey/GroupKey in the table can be null and sql server in unable to index it. I have also tried to use the Indexed view to pre ranked them but I can't use it in my query as Rank function is not supported in indexed
view.
Please note this table is updated once a day and using Sql Server 2008 R2. Any help will be greatly appreciated.create table #result (PropertyKey int not null, BoughtDate datetime, OwnerKey int null, GroupKey int null, [Rank] int not null)Create index idx ON #result(OwnerKey ,rnk)
insert into #result(PropertyKey, BoughtDate, OwnerKey, GroupKey, [Rank])
select PropertyKey, BoughtDate, OwnerKey, GroupKey,
RANK() over (partition by PropertyKey order by BoughtDate desc, OwnerKey desc, GroupKey desc) as [Rank]
from PropertyOwners
go
declare @ownerKey int = 1
select PropertyKey, BoughtDate, OwnerKey, GroupKey
from #result as result
where result.[Rank]=1
and result.[OwnerKey]=@ownerKey
go
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 -
Sql query slow in new redhat enviornment
We just migrated to a new dev environment in Linux REDHAT5, and now the query is very slow, and I used the TOAD to run the query, it took like 700 msecond to finish, however from any server connection, the sql query takes hours to finish.
I checked toad monitor, it said need to increase db_buffer_cache and shared pool too small.
Also three red alert from toad is:
1. Library Cache get hit ratio: Dynamic or unsharable sql
2. Chained fetch ratio: PCT free too low for a table
3. parse to execute ratio: HIgh parse to execute ratio.
App team said it ran real quick in the old AIX system, however I ran it in old system, and monitored in the toad, it gave me all same 5 red alerts in old system, and it did provide query results a lot quicker though.
Here is the parameters in the old system (11gr1 on AIX):
SQL> show parameter target
NAME TYPE VALUE
-------------------------------- archive_lag_target integer 0
db_flashback_retention_target integer 1440
fast_start_io_target integer 0
fast_start_mttr_target integer 0
memory_max_target big integer 0
memory_target big integer 0
pga_aggregate_target big integer 278928K
sga_target big integer 0
SQL> show parameter shared
NAME TYPE VALUE
-------------------------------- hi_shared_memory_address integer 0
max_shared_servers integer
shared_memory_address integer 0
shared_pool_reserved_size big integer 31876710
shared_pool_size big integer 608M
shared_server_sessions integer
shared_servers integer 0
SQL> show parameter db_buffer
SQL> show parameter buffer
NAME TYPE VALUE
-------------------------------- buffer_pool_keep string
buffer_pool_recycle string
db_block_buffers integer 0
log_buffer integer 2048000
use_indirect_data_buffers boolean FALSE
SQL>
In new 11gr2 Linux REDHAT parameter:
NAME TYPE VALUE
----------- archive_lag_target integer 0
db_flashback_retention_target integer 1440
fast_start_io_target integer 0
fast_start_mttr_target integer 0
memory_max_target big integer 2512M
memory_target big integer 2512M
parallel_servers_target integer 192
pga_aggregate_target big integer 0
sga_target big integer 1648M
SQL> show parameter shared
NAME TYPE VALUE
----------- hi_shared_memory_address integer 0
max_shared_servers integer
shared_memory_address integer 0
shared_pool_reserved_size big integer 28M
shared_pool_size big integer 0
shared_server_sessions integer
shared_servers integer 1
SQL> show parameter buffer
NAME TYPE VALUE
----------- buffer_pool_keep string
buffer_pool_recycle string
db_block_buffers integer 0
log_buffer integer 18857984
use_indirect_data_buffers boolean FALSE
SQL>
Please help. Thanks in advance.846422 wrote:
why need ddl? we have a sql query slow.The DDL shows the physical structure of the table and physical storage characteristics. All relevant in performance tuning.
As for the SQL query being slow. It is not.
You have not provided any evidence that it is slow. And no, comparing performance with a totally different system is not a valid baseline for comparison. (most cars have 4 wheels, a gearbox and a steering wheel - but that does not mean you can compare different cars like a VW Beetle with a VW Porsche)
What is slow? What are the biggest wait states for the SQL? What does the execution plan say?
You have not defined a problem - you identified a symptom called "+query is slow+". You need to diagnose the condition by determining exactly what the SQL qeury is doing in the database. (and please, do not use TOAD and similar tools in an attempt to do this - do it properly instead) -
SQl query to remove all dbms_output statement
Hi
Can u please tell me Single SQl query to remove all dbms_output statement from package and procedure
Umesh>
Can u please tell me Single SQl query to remove all
dbms_output statement from package and procedure
If you are comfortable with scripting languages like Perl, Python, Ruby etc., then removing lines having the dbms_output statements from your files should be a trivial matter.
pratz -
SQL query slow with call to function
I have a SQL query that will return in less than a second or two with a function in-line selected in the "from" clause of the statement. As soon as I select that returned value in the SQL statement, the statement takes from anywhere from 2 to 5 minutes to return. Here is a simplified sample from the statement:
This statement returns in a second or 2.
select A.pk_id
from stu_schedule A, stu_school B, stu_year C, school_year D,
(select calc_ytd_class_abs2(Z.PK_ID,'U') ytd_unx
from stu_schedule Z) II
where B.pk_id = A.fk_stu_school
and C.pk_id = B.fk_stu_year
and D.pk_id = C.year
and D.school_year = '2011';
if I add this function call in, the statement runs extremely poor.
select A.pk_id,
II.ytd_unx
from stu_schedule A, stu_school B, stu_year C, school_year D,
(select calc_ytd_class_abs2(Z.PK_ID,'U') ytd_unx
from stu_schedule Z) II
where B.pk_id = A.fk_stu_school
and C.pk_id = B.fk_stu_year
and D.pk_id = C.year
and D.school_year = '2011';
Here is the function that is called:
create or replace FUNCTION calc_ytd_class_abs2 (p_fk_stu_schedule in varchar2,
p_legality in varchar2) return number IS
l_days_absent number := 0;
CURSOR get_class_abs IS
select (select nvl(max(D.days_absent),'0')
from cut_code D
where D.pk_id = C.fk_cut_code
and (D.legality = p_legality
or p_legality = '%')) days_absent
from stu_schedule_detail B, stu_class_attendance C
where B.fk_stu_schedule = p_fk_stu_schedule
and C.fk_stu_schedule_detail = B.pk_id;
BEGIN
FOR x in get_class_abs LOOP
l_days_absent := l_days_absent + x.days_absent;
END LOOP;
return (l_days_absent);
END calc_ytd_class_abs2;Query returns anywhere from 6000 to 32000 rows. For each of those rows a parameter is passed in to 4 different functions to get ytd totals. When I call the functions in the in-line view but do not select from them in the main SQL, the report (oh, this is Application Express 4.0 interactive reports, just an FYI) runs fast. The report comes back in a few seconds. But when I select from the in-line view to display those ytd totals, the report runs extremely slow. I know there are the articles about context switching and how mixing SQL with PL/SQL performs poorly. So I tried a pipeline table function where the function for the ytd totals populate the columns of the pipeline table and I select from the pipeline table in the SQL query in the interactive report. That seemed to perform a little worse from what I can tell.
Thanks for any help you can offer. -
SQL query problem - select max (case... aggregate function)
Hi,
I have a problem with below sql query, it gives me problem/error message 'ORA-00937: not a single-group group function', why?
select sag.afdeling, sag.sagsnr, to_char(sag.start_dato, 'yyyy-mm-dd'), sag.stat, BOGF_TRANS.TRANSTYPE,
max (case when BOGF_TRANS.TRANSTYPE = 'K' then sum(bogf_trans.belobdkk) end) + -- as "TRANSTYPE K",
max (case when BOGF_TRANS.TRANSTYPE = 'D' then sum(bogf_trans.belobdkk) end) as "TRANSTYPE K & D",
max (case when BOGF_TRANS.TRANSTYPE = 'S' then sum(bogf_trans.belobdkk) end) as "SUM TRANSTYPE S"
from sag
join bogf_trans on sag.selskab = bogf_trans.selskab and sag.sagsnr = bogf_trans.sagsnr and sag.afdeling = bogf_trans.afdeling
where SAG.SELSKAB=37 and SAG.AFDELING = 'SUS' AND SAG.SAGSNR = 10876
group by sag.afdeling, sag.sagsnr, sag.start_dato, sag.stat, BOGF_TRANS.TRANSTYPE
If I exclude (columns) as below it give me correct summations (max (case... sum(...)) but then I miss some important info that I need
select
max (case when BOGF_TRANS.TRANSTYPE = 'K' then sum(bogf_trans.belobdkk) end) + -- as "TRANSTYPE K",
max (case when BOGF_TRANS.TRANSTYPE = 'D' then sum(bogf_trans.belobdkk) end) as "TRANSTYPE K & D",
max (case when BOGF_TRANS.TRANSTYPE = 'S' then sum(bogf_trans.belobdkk) end) as "SUM TRANSTYPE S"
from sag
join bogf_trans on sag.selskab = bogf_trans.selskab and sag.sagsnr = bogf_trans.sagsnr and sag.afdeling = bogf_trans.afdeling
where SAG.SELSKAB=37 and SAG.AFDELING = 'SUS' AND SAG.SAGSNR = 10876
group by sag.afdeling, sag.sagsnr, sag.start_dato, sag.stat, BOGF_TRANS.TRANSTYPE
Any ideas?Moved to more sutable forum, sorry.
-
SQL Query for real time resource stats
Does anyone know what the query would be to duplicate the real time resource stats page in version 8 or above of UCCX? I need to build a custom web page that displays the same information. I've got all the connectivity to the database just fine and can query it and display information. Just can't figure out what the SQL would be that would extract that information.
Michael,
you can try :
SELECT x.resourceName, t.eventType, x.datetime FROM (SELECT t1.resourceID, t1.resourceName, MAX(t2.eventDateTime) AS datetime FROM Resource AS t1 INNER JOIN AgentStateDetail AS t2 ON t2.agentID = t1.resourceID GROUP BY t1.resourceID, t1.resourceName ) AS x INNER JOIN AgentStateDetail AS t ON t.agentID = x.resourceID AND t.eventDateTime = x.datetime ORDER BY x.resourceName
You will need to translate the eventType into the "readable" status like Talking or Not Ready with an IF or Case statement.
Regards,
Jeroen -
SEQUENCE Select within an SQL Query with an ORDER BY statement
Does anyone know why you cannot use an ORDER BY statement within an SQL query when also selecting from a SEQUENCE? My query was selecting production data as a result of a filtered search. I want to take the results of the filtered search and create a transaction. I have a sequence for generating transaction numbers where I select NEXTVAL. Since I could possibly obtain multiple, yet distinct, rows based upon my search criteria, I wanted to use an ORDER BY statement to simplify and order the resulting row(s).
I was able to get the SQL select with SEQUENCE.NEXTVAL to work without the ORDER BY, so I know that my SQL is correct. Thanks in-advance.Okay,
I understand. You want the sequence assigned first and the you want to ORDER BY. You
can do this using pipelined functions. See here:
CREATE OR REPLACE TYPE emp_rec_seq AS OBJECT (
seq NUMBER,
ename VARCHAR2 (20),
job VARCHAR2 (20),
sal NUMBER
CREATE OR REPLACE TYPE emp_tab_seq AS TABLE OF emp_rec_seq;
CREATE OR REPLACE FUNCTION get_emp_with_sequence
RETURN emp_tab_seq PIPELINED
IS
my_record emp_rec_seq := emp_rec_seq (NULL, NULL, NULL, NULL);
BEGIN
FOR c IN (SELECT dummy.NEXTVAL seq, ename, job, sal
FROM emp)
LOOP
my_record.seq := c.seq;
my_record.ename := c.ename;
my_record.job := c.job;
my_record.sal := c.sal;
PIPE ROW (my_record);
END LOOP;
RETURN;
END get_emp_with_sequence;after that, you can do a select like this:
SELECT seq, ename, job, sal
FROM TABLE (get_emp_with_sequence)
order by enamewhich will get you this:
SEQ ENAME JOB SAL
1053 BLAKE MANAGER 2850
1054 CLARK MANAGER 2450
1057 FORD ANALYST 3000
1062 JAMES CLERK 950
1055 JONES MANAGER 2975
1052 KING MANAGER 20000
1060 MARTIN SALESMAN 1250
1063 MILLER CLERK 1300
1064 DKUBICEK MANAGER 12000
1056 SCOTT ANALYST 3000
1058 SMITH CLERK 800
1061 TURNER SALESMAN 1500
1059 WARD SALESMAN 1250Denes Kubicek
http://deneskubicek.blogspot.com/
http://htmldb.oracle.com/pls/otn/f?p=31517:1
------------------------------------------------------------------- -
MDX Query - Rolling Up A Case Statement
Hi,
I have the following query
with
member measures.[EmployeeNumber] as [Employee].[EmployeeNumber].currentmember.member_name
member measures.[Type] as Case When [WorkDay].[DayOfWeek].currentmember.member_name = "Sunday" Then "PenaltyRate" Else "Standard" End
Select {
measures.[EmployeeNumber]
, measures.[Type]
, measures.[ContactHours]
} on 0,
non empty
[Employee].[EmployeeNumber].[all].children*
[WorkDay].[DayOfWeek].[all].children
Having measures.[ContactHours] <> 0
on 1
From MyCube
and I want write a MDX query that takes this result set and sums that ContactHours per EmployeeNumber and per Type i.e. excluding the WorkDay.DayOfWeek hierarchy from the results.
This would be the same as doing
Select Sum(ContactHours), EmployeeNumber, Type
From ResultsSet
Group By EmployeeNumber, Type
in SQL.Hi Joerne,
According to your description, you want to get a MDX query which equivalent of a GROUP BY in T-SQL, right? In this case, please refer to the link below to see the article which give out some sample query in MDX that equivalent of a filtered GROUP BY in T-SQL.
MDX equivalent of a filtered GROUP BY in SQL
Hope this helps.
Regards,
Charlie Liao
TechNet Community Support -
Sql query slow while using poc *C, OCI
Sql query is taking long time while using fetching records from RAC using Pro *C, OCI. Same query working fine while using JDBC connection.what could be the issue.Please help
Thanks,
SamPro*C is not part of Oracle Solaris Studio (formerly Sun Studio). Studio has no special support for database programming. You are more likely to get a helpful answer in a database programming forum. Start here:
https://forums.oracle.com/forums/category.jspa?categoryID=18 -
What is the best way to Optimize a SQL query : call a function or do a join?
Hi, I want to know what is the best way to optimize a SQL query, call a function inside the SELECT statement or do a simple join?
Hi,
If you're even considering a join, then it will probably be faster. As Justin said, it depends on lots of factors.
A user-defined function is only necessary when you can't figure out how to do something in pure SQL, using joins and built-in functions.
You might choose to have a user-defined function even though you could get the same result with a join. That is, you realize that the function is slow, but you believe that the convenience of using a function is more important than better performance in that particular case. -
Is it possible to use a case statement when joining different tables based on input parameters?
Hi,
I have a scenario where my stored procedure takes 5 parameters and the users can pass NULL or some value to these parameters and based on the parameters, I need to pull data from various tables.
Is it possible to use a case statement in the join, similar the one in the below example. I'm getting error when I use the below type of statement.
select a.*
from a
case
when parameter1=1 then
inner join a on a.id = b.id
when parameter1=2 then
inner join a on a.id = c.id
end;
Please let me know, if this type of statement works, and if it works will it create any performance issues?. If the above doesn't work, could you please give me some alternate solutions?
Thanks.Here's a technique for joining A to B or C depending on the input parameters. In theory, you are joining to both tables but the execution plan includes filters to skip whichever join is not appropriate. The drawback is that you have to do outer joins, not inner ones.
CREATE TABLE A AS SELECT LEVEL ak FROM dual CONNECT BY LEVEL <= 100;
CREATE TABLE b AS SELECT ak, bk
FROM A, (SELECT LEVEL bk FROM dual CONNECT BY LEVEL <= 10);
CREATE TABLE c(ak, ck) AS SELECT ak, bk*10 FROM b;
variable p1 NUMBER;
variable p2 NUMBER;
exec :p1 := 1;
exec :p2 := 20;
SELECT /*+ gather_plan_statistics */ A.ak, nvl(b.bk, c.ck) otherk FROM A
LEFT JOIN b ON A.ak = b.ak AND :p1 IS NOT NULL AND b.bk = :p1
LEFT JOIN c ON A.ak = c.ak AND :p1 is null and :p2 IS NOT NULL and c.ck = :p2
WHERE A.ak <= 9;
SELECT * FROM TABLE(dbms_xplan.display_cursor(NULL,NULL,'IOSTATS LAST'));
| Id | Operation | Name | Starts | E-Rows | A-Rows | A-Time | Buffers |
| 0 | SELECT STATEMENT | | 1 | | 9 |00:00:00.01 | 7 |
|* 1 | HASH JOIN OUTER | | 1 | 9 | 9 |00:00:00.01 | 7 |
|* 2 | HASH JOIN OUTER | | 1 | 9 | 9 |00:00:00.01 | 7 |
|* 3 | TABLE ACCESS FULL | A | 1 | 9 | 9 |00:00:00.01 | 3 |
| 4 | VIEW | VW_DCL_5532A50F | 1 | 9 | 9 |00:00:00.01 | 4 |
|* 5 | FILTER | | 1 | | 9 |00:00:00.01 | 4 |
|* 6 | TABLE ACCESS FULL| B | 1 | 9 | 9 |00:00:00.01 | 4 |
| 7 | VIEW | VW_DCL_5532A50F | 1 | 9 | 0 |00:00:00.01 | 0 |
|* 8 | FILTER | | 1 | | 0 |00:00:00.01 | 0 |
|* 9 | TABLE ACCESS FULL | C | 0 | 9 | 0 |00:00:00.01 | 0 |
Predicate Information (identified by operation id):
1 - access("A"."AK"="ITEM_0")
2 - access("A"."AK"="ITEM_1")
3 - filter("A"."AK"<=9)
5 - filter(:P1 IS NOT NULL)
6 - filter(("B"."AK"<=9 AND "B"."BK"=:P1))
8 - filter((:P2 IS NOT NULL AND :P1 IS NULL))
9 - filter(("C"."AK"<=9 AND "C"."CK"=:P2))
You can see that table C was not really accessed: the buffer count is 0.
exec :p1 := NULL;
SELECT /*+ gather_plan_statistics */ A.ak, nvl(b.bk, c.ck) otherk FROM A
LEFT JOIN b ON A.ak = b.ak AND :p1 IS NOT NULL AND b.bk = :p1
LEFT JOIN c ON A.ak = c.ak AND :p1 is null and :p2 IS NOT NULL and c.ck = :p2
WHERE A.ak <= 9;
SELECT * FROM TABLE(dbms_xplan.display_cursor(NULL,NULL,'IOSTATS LAST'));
Now table B is not accessed.
| Id | Operation | Name | Starts | E-Rows | A-Rows | A-Time | Buffers | Reads |
| 0 | SELECT STATEMENT | | 1 | | 9 |00:00:00.02 | 7 | 2 |
|* 1 | HASH JOIN OUTER | | 1 | 9 | 9 |00:00:00.02 | 7 | 2 |
|* 2 | HASH JOIN OUTER | | 1 | 9 | 9 |00:00:00.01 | 3 | 0 |
|* 3 | TABLE ACCESS FULL | A | 1 | 9 | 9 |00:00:00.01 | 3 | 0 |
| 4 | VIEW | VW_DCL_5532A50F | 1 | 9 | 0 |00:00:00.01 | 0 | 0 |
|* 5 | FILTER | | 1 | | 0 |00:00:00.01 | 0 | 0 |
|* 6 | TABLE ACCESS FULL| B | 0 | 9 | 0 |00:00:00.01 | 0 | 0 |
| 7 | VIEW | VW_DCL_5532A50F | 1 | 9 | 9 |00:00:00.01 | 4 | 2 |
|* 8 | FILTER | | 1 | | 9 |00:00:00.01 | 4 | 2 |
|* 9 | TABLE ACCESS FULL | C | 1 | 9 | 9 |00:00:00.01 | 4 | 2 | -
Pl/sql function body returning SQL query - if with in select statement
hello all,
I have a condition where when summary field is checked alone we have show that column for the users in the report. Is IF statement possible for this case ? I have given the code below.. is it possible to write something like below or is there any other way to do it ?
v_sql := 'select TBLCASES.INVESTIGATOR as INVESTIGATOR,';
v_sql := v_sql ||' TBLCASES.CASENUMBER as CASENUMBER,';
v_sql := v_sql ||' TBLCASES.OPENDATE as OPENDATE,';
v_sql := v_sql ||' TBLCASES.ESTCOMPLETE as TARGETDATE,';
v_sql := v_sql ||' TBLCASES.STATUS as STATUS,';
v_sql := v_sql ||' TBLCASES.CASECODE as CASECODE,';
v_sql := V_sql ||' TBLCASES.FAIR_HOTLINE as FAIRHotline,';
v_sql := v_sql ||' TBLCASES.NYSIG as NYSIGCase,';
v_sql := v_sql ||' TBLCASES.REGION as Region,';
IF :P44_INCLUDE_SUMMARY_FIELD is not null THEN
v_sql := v_sql||' TBLCASES.SUMMARY as SUMMARY,';
END IF ;
v_sql := v_sql ||' TBLCASES.PROGAREA as PROGArea ';
v_sql := v_sql ||' from TBLCASES where 1=1';
..\Hi Lucy,
You are adding and removing a column from a report so it may help to have the extra on the end of the query.
Do you get an error? If so paste it in...
BUT - this I would put a condition on the column where ':P44_INCLUDE_SUMMARY_FIELD is not null '
Under he report's "Column Attributes" Select the column edit icon and it has a "Condition" breadcrumb.
Select "Value of Item in Expression 1 is Not Null" and put P44_INCLUDE_SUMMARY_FIELD in Expression 1 text area.
And I make it more readable like this when I do dynamic SQL:
IF :P44_INCLUDE_SUMMARY_FIELD is not null THEN
v_INCLUDE_SUMMARY_FIELD := ' TBLCASES.SUMMARY as SUMMARY ';
END IF ;
v_sql := 'select TBLCASES.INVESTIGATOR as INVESTIGATOR,
TBLCASES.CASENUMBER as CASENUMBER,
TBLCASES.OPENDATE as OPENDATE,
TBLCASES.ESTCOMPLETE as TARGETDATE,
TBLCASES.STATUS as STATUS,
TBLCASES.CASECODE as CASECODE,
TBLCASES.FAIR_HOTLINE as FAIRHotline,
TBLCASES.NYSIG as NYSIGCase,
TBLCASES.REGION as Region,
TBLCASES.PROGAREA as PROGArea,'||
v_INCLUDE_SUMMARY_FIELD ||
'from TBLCASES where 1=1; ';
Hope it helps,
BC -
Hi All,
We are experiencing slow performance for a query which is using dblink.
Our Database version is 8i
Our OS is Windows 2000
the explain plan is as below.
Explain plan:-
Execution Plan
0 SELECT STATEMENT Optimizer=CHOOSE (Cost=7494 Card=1 Bytes=38
0)
1 0 SORT (ORDER BY) (Cost=7494 Card=1 Bytes=380)
2 1 SORT (GROUP BY) (Cost=7494 Card=1 Bytes=380)
3 2 HASH JOIN (Cost=7489 Card=1 Bytes=380)
4 3 MERGE JOIN (CARTESIAN) (Cost=9 Card=17 Bytes=1479)
5 4 NESTED LOOPS (Cost=8 Card=1 Bytes=63)
6 5 TABLE ACCESS (FULL) OF 'CATMAP' (Cost=1 Card=1 B
ytes=14)
7 5 TABLE ACCESS (BY GLOBAL INDEX ROWID) OF 'DOCPART
EXT' (Cost=7 Card=1 Bytes=49)
8 7 INDEX (RANGE SCAN) OF 'DOCPARTEXT_I10' (NON-UN
IQUE) (Cost=3 Card=1)
9 4 SORT (JOIN) (Cost=2 Card=17 Bytes=408)
10 9 TABLE ACCESS (FULL) OF 'PARTGROUP' (Cost=1 Card=
17 Bytes=408)
11 3 REMOTE* (Cost=7311 Card=1161896 Bytes=340435528) PRICE
11 SERIAL_FROM_REMOTE SELECT "PARTID","PARTGROUP","PARTDESCRIPTION
","IMAGEFILENAME" FROM "DIST"."
Statistics
18 recursive calls
14 db block gets
38130 consistent gets
378 physical reads
172 redo size
65623 bytes sent via SQL*Net to client
2983 bytes received via SQL*Net from client
25 SQL*Net roundtrips to/from client
3 sorts (memory)
0 sorts (disk)
360 rows processed
The above query sometimes execute in 2 seconds and sometimes it takes almost 150 secs
Please advice how to tune this query.
Regards,
angHi Anurag,
I found below stuff in system wait events.
EVENTS Total Waits
SQL*Net message to client 112838591 0 0 0
SQL*Net message to dblink 297216585 0 0 0
SQL*Net more data to client 7965780 0 0 0
SQL*Net more data to dblink 2207 0 0 0
SQL*Net message from client 112838213 0 0 0
SQL*Net more data from client 525083 0 0 0
SQL*Net message from dblink 297216585 0 0 0
SQL*Net more data from dblink 94103530 0 0 0
SQL*Net break/reset to client 10115895 0 0 0
SQL*Net break/reset to dblink 41218 0 0 0
Above are the highest wait events in v$system_event.
Regards,
Ang -
MS SQL query slow using view column as criteria
HI,
I am experiencing a very frustrate problem. I have 2 tables, and create a view
to union these 2 tables, when do a select on this view using the column of the
view as criteria is took more 1 minutes, but the query runs fine in Qurey Analyzer.
Anybody has the same experience? is this the problem with jdbc?I searched http://e-docs.bea.com/wls/docs70/index.html, also searched the documentation
for wls6.1, wls5.1. As you pointed I searched support site, they are all the customer
case, it's not formal documentation.
Joe Weinstein <[email protected]> wrote:
>
>
jen wrote:
Thanks. but I search on the table is fine (the same column). is thereany db setting
could be tuned? so the view is the problem? No, it's a client decision/issue. If you defined your tables to have
nvarchar columns
the jdbc driver's parameter values would be fine as-is.
I searched "useVarChars" on whole
site and can't find anything.Which site? This is a property of the weblogic.jdbc.mssqlserver4.Driver.
I just went to www.bea.com/support and entered useVarChars in the Ask
BEA
question panel and got hits...
Joe
Joe Weinstein <[email protected]> wrote:
Jen wrote:
Sorry it's my bad. I am testing on wls81, but the problems is on wls70,so they
are using different drivers.
You are the magic man. It worked on wls81 now. I am sure it will curethe problem
on wls70. Is there any documentation on this? Why it is not a problemon some
databse server? ThanksSure. The issue has to do with the MS client-DBMS protocol having evolved
from
an 8-bit (7-bit really) character representation. Now it has a newer
16-bit
way, to transfer NVARCHAR data. Java characters are all 16-bit, so
by default
a JDBC driver will send Java parameters over as NVARCHAR data. This
is
crucial
for Japanese data etc. However, once simple ASCII data is transformed
to an
NVARCHAR format, the DBMS can't directly compare it to varchar data,
or use it
in index searches. The DBMS has to convert the VARCHAR data to NVARCHAR,
but it
can't guarantee that the converted data will retain the same ordering
as the index,
so the DBMS has to do a table scan!
The properties I suggested are each driver's way of allowing you
to say "I'm
a simple American ;) I am using simple varchar data so please sendmy
java
strings that way.". This allows the DBMS to use your varchar indexes
in queries.
Joe Weinstein at BEA
Joe Weinstein <[email protected]> wrote:
Jen wrote:
It doesn't cure the problem. Here is my pool
<JDBCConnectionPool DriverName="weblogic.jdbc.sqlserver.SQLServerDriver"Name="test_pool"
Password="{3DES}fKSovViFe5kHzl/vTs0LVQ==" Properties="user=user;PortNumber=1543;useVarChars=true;ServerName=194.20.2.10;DatabaseName=devDB"
Targets="admin" TestTableName="SQL SELECT COUNT(*) FROM sysobjects"URL="jdbc:bea:sqlserver://194.20.2.10:1543"/>
Strange is some database is fine.Oh, sorry. I thought it was the older weblogic driver. Change the
useVarChars=true to sendStringParametersAsUnicode=false
Let me know... Also, I suggest changing the TestTableName to "SQL
select
1".
For MS, that will be much more efficient than involving a full count
of sysobjects!
Joe
Joe Weinstein <[email protected]> wrote:
Jen wrote:
You are right. Tadaa! Am I Kreskin, or what? ;) Here's what I recommend:
In your pool definition, for this driver add a driver property:
useVarChars=true
and let me know if it's all better.
Joe
I am using weblogic jdbc driver weblogic.jdbc.mssqlserver4.Driver.
here is the code:
getData(Connection connection, String stmt, ArrayList arguments)
PreparedStatement pStatement=null;>>>>>>>> ResultSet resultSet=null;>>>>>>>> try {>>>>>>>> pStatement = connection.prepareStatement(stmt);>>>>>>>> for (int i = 1; i <= arguments.size(); i++) {>>>>>>>> pStatement.setString(i, (String) arguments.get(i-1));>>>>>>>> resultSet = pStatement.executeQuery(); //this statement takesmore than 1
min.
Joe Weinstein <[email protected]> wrote:
Jen wrote:
HI,
I am experiencing a very frustrate problem. I have 2 tables,
and
create
a view
to union these 2 tables, when do a select on this view using
the
column
of the
view as criteria is took more 1 minutes, but the query runs
fine
in
Qurey Analyzer.
Anybody has the same experience? is this the problem with jdbc?
I have suspicions... Show me the jdbc code. I'm guessing it's
a
PreparedStatement,
and you send the search criterion column value as a parameter
you
set
with a
setString().... Let me know... (also let me know which jdbc driveryou're
using).
Joe
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