VIEW PUSHED PREDICATE(谓词推入)引发的惨剧
帮网友调SQL
http://www.itpub.net/forum.php?mod=viewthread&tid=1492997&extra=pageD1%3D&page=1
原SQL如下(要跑1个多小时)：
SELECT *
FROM (SELECT A.INVOICE_ID,
A.VENDOR_ID,
A.INVOICE_NUM,
A.INVOICE_AMOUNT,
A.GL_DATE,
A.INVOICE_CURRENCY_CODE,
SUM(NVL(B.PREPAY_AMOUNT_APPLIED, 0)) PAID_AMOUNT,
A.INVOICE_AMOUNT - SUM(NVL(B.PREPAY_AMOUNT_APPLIED, 0)) REMAIN
FROM ap.AP_INVOICES_ALL A, APPS.AP_UNAPPLY_PREPAYS_V B
WHERE A.INVOICE_ID = B.INVOICE_ID(+)
AND A.ORG_ID = 126 /*:B4*/
AND A.SOURCE = 'OSM IMPORTED' /*:B3*/
AND A.INVOICE_NUM BETWEEN NVL( /*:B2*/ null, A.INVOICE_NUM) AND
NVL( /*:B1*/ null, A.INVOICE_NUM)
GROUP BY A.INVOICE_ID,
A.INVOICE_NUM,
A.INVOICE_AMOUNT,
A.VENDOR_ID,
A.GL_DATE,
A.INVOICE_CURRENCY_CODE)
WHERE REMAIN > 0 ;
B是一个视图，定义如下：
CREATE OR REPLACE VIEW APPS.AP_UNAPPLY_PREPAYS_V AS
SELECT AID1.ROWID ROW_ID,
AID1.INVOICE_ID INVOICE_ID,
AID1.INVOICE_DISTRIBUTION_ID INVOICE_DISTRIBUTION_ID,
AID1.PREPAY_DISTRIBUTION_ID PREPAY_DISTRIBUTION_ID,
AID1.DISTRIBUTION_LINE_NUMBER PREPAY_DIST_NUMBER,
(-1) * AID1.AMOUNT PREPAY_AMOUNT_APPLIED,
nvl(AID2.PREPAY_AMOUNT_REMAINING, AID2.AMOUNT) PREPAY_AMOUNT_REMAINING,
AID1.DIST_CODE_COMBINATION_ID DIST_CODE_COMBINATION_ID,
AID1.ACCOUNTING_DATE ACCOUNTING_DATE,
AID1.PERIOD_NAME PERIOD_NAME,
AID1.SET_OF_BOOKS_ID SET_OF_BOOKS_ID,
AID1.DESCRIPTION DESCRIPTION,
AID1.PO_DISTRIBUTION_ID PO_DISTRIBUTION_ID,
AID1.RCV_TRANSACTION_ID RCV_TRANSACTION_ID,
AID1.ORG_ID ORG_ID,
AI.INVOICE_NUM PREPAY_NUMBER,
AI.VENDOR_ID VENDOR_ID,
AI.VENDOR_SITE_ID VENDOR_SITE_ID,
ATC.TAX_ID TAX_ID,
ATC.NAME TAX_CODE,
PH.SEGMENT1 PO_NUMBER,
PV.VENDOR_NAME VENDOR_NAME,
PV.SEGMENT1 VENDOR_NUMBER,
PVS.VENDOR_SITE_CODE VENDOR_SITE_CODE,
RSH.RECEIPT_NUM RECEIPT_NUMBER
FROM AP_INVOICES AI,
AP_INVOICE_DISTRIBUTIONS AID1,
AP_INVOICE_DISTRIBUTIONS AID2,
AP_TAX_CODES ATC,
PO_VENDORS PV,
PO_VENDOR_SITES PVS,
PO_DISTRIBUTIONS PD,
PO_HEADERS PH,
PO_LINES PL,
PO_LINE_LOCATIONS PLL,
RCV_TRANSACTIONS RTXNS,
RCV_SHIPMENT_HEADERS RSH,
RCV_SHIPMENT_LINES RSL
WHERE AID1.PREPAY_DISTRIBUTION_ID = AID2.INVOICE_DISTRIBUTION_ID
AND AI.INVOICE_ID = AID2.INVOICE_ID
AND AID1.AMOUNT < 0
AND nvl(AID1.REVERSAL_FLAG, 'N') != 'Y'
AND AID1.TAX_CODE_ID = ATC.TAX_ID(+)
AND AID1.LINE_TYPE_LOOKUP_CODE = 'PREPAY'
AND AI.VENDOR_ID = PV.VENDOR_ID
AND AI.VENDOR_SITE_ID = PVS.VENDOR_SITE_ID
AND AID1.PO_DISTRIBUTION_ID = PD.PO_DISTRIBUTION_ID(+)
AND PD.PO_HEADER_ID = PH.PO_HEADER_ID(+)
AND PD.LINE_LOCATION_ID = PLL.LINE_LOCATION_ID(+)
AND PLL.PO_LINE_ID = PL.PO_LINE_ID(+)
AND AID1.RCV_TRANSACTION_ID = RTXNS.TRANSACTION_ID(+)
AND RTXNS.SHIPMENT_LINE_ID = RSL.SHIPMENT_LINE_ID(+)
AND RSL.SHIPMENT_HEADER_ID = RSH.SHIPMENT_HEADER_ID(+);
执行计划如下：
SQL> @$ORACLE_HOME/rdbms/admin/utlxpls
PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost |
-------------------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 1 | 69 | 722 |
|* 1 | FILTER | | | | |
| 2 | SORT GROUP BY | | 1 | 69 | 722 |
| 3 | NESTED LOOPS OUTER | | 3 | 207 | 697 |
|* 4 | TABLE ACCESS FULL | AP_INVOICES_ALL | 3 | 153 | 694 |
| 5 | VIEW PUSHED PREDICATE | AP_UNAPPLY_PREPAYS_V | 1 | 18 | 1 |
| 6 | NESTED LOOPS | | 1 | 372 | 3 |
| 7 | NESTED LOOPS | | 1 | 368 | 3 |
| 8 | NESTED LOOPS | | 1 | 361 | 2 |
| 9 | NESTED LOOPS | | 1 | 347 | 1 |
| 10 | NESTED LOOPS OUTER | | 1 | 334 | 1 |
| 11 | NESTED LOOPS OUTER | | 1 | 321 | 1 |
| 12 | NESTED LOOPS OUTER | | 1 | 295 | 1 |
| 13 | NESTED LOOPS OUTER | | 1 | 269 | 1 |
| 14 | NESTED LOOPS OUTER | | 1 | 243 | 1 |
| 15 | NESTED LOOPS OUTER | | 1 | 197 | 1 |
| 16 | NESTED LOOPS OUTER | | 1 | 157 | 1 |
| 17 | NESTED LOOPS OUTER | | 1 | 98 | 1 |
|* 18 | TABLE ACCESS BY INDEX ROWID| AP_INVOICE_DISTRIBUTIONS_ALL | 1 | 72 | 1 |
|* 19 | INDEX FULL SCAN | AP_INVOICE_DISTRIBUTIONS_N20 | 1 | | |
|* 20 | TABLE ACCESS BY INDEX ROWID| AP_TAX_CODES_ALL | 1 | 26 | |
|* 21 | INDEX UNIQUE SCAN | AP_TAX_CODES_U1 | 1 | | |
|* 22 | TABLE ACCESS BY INDEX ROWID | PO_DISTRIBUTIONS_ALL | 1 | 59 | |
|* 23 | INDEX UNIQUE SCAN | PO_DISTRIBUTIONS_U1 | 1 | | |
|* 24 | TABLE ACCESS BY INDEX ROWID | PO_HEADERS_ALL | 1 | 40 | |
|* 25 | INDEX UNIQUE SCAN | PO_HEADERS_U1 | 1 | | |
|* 26 | TABLE ACCESS BY INDEX ROWID | PO_LINE_LOCATIONS_ALL | 1 | 46 | |
|* 27 | INDEX UNIQUE SCAN | PO_LINE_LOCATIONS_U1 | 1 | | |
|* 28 | TABLE ACCESS BY INDEX ROWID | PO_LINES_ALL | 1 | 26 | |
|* 29 | INDEX UNIQUE SCAN | PO_LINES_U1 | 1 | | |
| 30 | TABLE ACCESS BY INDEX ROWID | RCV_TRANSACTIONS | 1 | 26 | |
|* 31 | INDEX UNIQUE SCAN | RCV_TRANSACTIONS_U1 | 1 | | |
| 32 | TABLE ACCESS BY INDEX ROWID | RCV_SHIPMENT_LINES | 1 | 26 | |
|* 33 | INDEX UNIQUE SCAN | RCV_SHIPMENT_LINES_U1 | 1 | | |
|* 34 | INDEX UNIQUE SCAN | RCV_SHIPMENT_HEADERS_U1 | 1 | 13 | |
|* 35 | TABLE ACCESS BY INDEX ROWID | AP_INVOICE_DISTRIBUTIONS_ALL | 1 | 13 | |
|* 36 | INDEX UNIQUE SCAN | AP_INVOICE_DISTRIBUTIONS_U2 | 1 | | |
|* 37 | TABLE ACCESS BY INDEX ROWID | AP_INVOICES_ALL | 1 | 14 | 1 |
|* 38 | INDEX UNIQUE SCAN | AP_INVOICES_U1 | 1 | | |
|* 39 | TABLE ACCESS BY INDEX ROWID | PO_VENDOR_SITES_ALL | 1 | 7 | 1 |
|* 40 | INDEX UNIQUE SCAN | PO_VENDOR_SITES_U1 | 1 | | |
|* 41 | INDEX UNIQUE SCAN | PO_VENDORS_U1 | 1 | 4 | |
-------------------------------------------------------------------------------------------------------------
Predicate Information (identified by operation id):
---------------------------------------------------
1 - filter("A"."INVOICE_AMOUNT"-SUM(NVL("B"."PREPAY_AMOUNT_APPLIED",0))>0)
4 - filter("A"."ORG_ID"=126 AND "A"."SOURCE"='OSM IMPORTED' AND
"A"."INVOICE_NUM">=NVL(NULL,"A"."INVOICE_NUM") AND "A"."INVOICE_NUM"<=NVL(NULL,"A"."INVOICE_NUM"))
18 - filter("A"."INVOICE_ID"="AP_INVOICE_DISTRIBUTIONS_ALL"."INVOICE_ID" AND
"AP_INVOICE_DISTRIBUTIONS_ALL"."AMOUNT"<0 AND NVL("AP_INVOICE_DISTRIBUTIONS_ALL"."REVERSAL_FLAG",'N')<>'Y'
AND "AP_INVOICE_DISTRIBUTIONS_ALL"."LINE_TYPE_LOOKUP_CODE"='PREPAY' AND
NVL("AP_INVOICE_DISTRIBUTIONS_ALL"."ORG_ID",NVL(TO_NUMBER(DECODE(SUBSTRB(:B1,1,1),'
',NULL,SUBSTRB(:B2,1,10))),(-99)))=NVL(TO_NUMBER(DECODE(SUBSTRB(:B3,1,1),' ',NULL,SUBSTRB(:B4,1,10))),(-99)))
19 - filter("AP_INVOICE_DISTRIBUTIONS_ALL"."PREPAY_DISTRIBUTION_ID" IS NOT NULL)
20 - filter(NVL("AP_TAX_CODES_ALL"."ORG_ID"(+),NVL(TO_NUMBER(DECODE(SUBSTRB(:B1,1,1),'
',NULL,SUBSTRB(:B2,1,10))),(-99)))=NVL(TO_NUMBER(DECODE(SUBSTRB(:B3,1,1),' ',NULL,SUBSTRB(:B4,1,10))),(-99)))
21 - access("AP_INVOICE_DISTRIBUTIONS_ALL"."TAX_CODE_ID"="AP_TAX_CODES_ALL"."TAX_ID"(+))
22 - filter(NVL("PO_DISTRIBUTIONS_ALL"."ORG_ID"(+),NVL(TO_NUMBER(DECODE(SUBSTRB(:B1,1,1),'
',NULL,SUBSTRB(:B2,1,10))),(-99)))=NVL(TO_NUMBER(DECODE(SUBSTRB(:B3,1,1),' ',NULL,SUBSTRB(:B4,1,10))),(-99)))
23 - access("AP_INVOICE_DISTRIBUTIONS_ALL"."PO_DISTRIBUTION_ID"="PO_DISTRIBUTIONS_ALL"."PO_DISTRIBUTION_ID"
(+))
24 - filter(NVL("PO_HEADERS_ALL"."ORG_ID"(+),NVL(TO_NUMBER(DECODE(SUBSTRB(:B1,1,1),'
',NULL,SUBSTRB(:B2,1,10))),(-99)))=NVL(TO_NUMBER(DECODE(SUBSTRB(:B3,1,1),' ',NULL,SUBSTRB(:B4,1,10))),(-99)))
25 - access("PO_DISTRIBUTIONS_ALL"."PO_HEADER_ID"="PO_HEADERS_ALL"."PO_HEADER_ID"(+))
26 - filter(NVL("PO_LINE_LOCATIONS_ALL"."ORG_ID"(+),NVL(TO_NUMBER(DECODE(SUBSTRB(:B1,1,1),'
',NULL,SUBSTRB(:B2,1,10))),(-99)))=NVL(TO_NUMBER(DECODE(SUBSTRB(:B3,1,1),' ',NULL,SUBSTRB(:B4,1,10))),(-99)))
27 - access("PO_DISTRIBUTIONS_ALL"."LINE_LOCATION_ID"="PO_LINE_LOCATIONS_ALL"."LINE_LOCATION_ID"(+))
28 - filter(NVL("PO_LINES_ALL"."ORG_ID"(+),NVL(TO_NUMBER(DECODE(SUBSTRB(:B1,1,1),'
',NULL,SUBSTRB(:B2,1,10))),(-99)))=NVL(TO_NUMBER(DECODE(SUBSTRB(:B3,1,1),' ',NULL,SUBSTRB(:B4,1,10))),(-99)))
29 - access("PO_LINE_LOCATIONS_ALL"."PO_LINE_ID"="PO_LINES_ALL"."PO_LINE_ID"(+))
31 - access("AP_INVOICE_DISTRIBUTIONS_ALL"."RCV_TRANSACTION_ID"="RTXNS"."TRANSACTION_ID"(+))
33 - access("RTXNS"."SHIPMENT_LINE_ID"="RSL"."SHIPMENT_LINE_ID"(+))
34 - access("RSL"."SHIPMENT_HEADER_ID"="RSH"."SHIPMENT_HEADER_ID"(+))
35 - filter(NVL("AP_INVOICE_DISTRIBUTIONS_ALL"."ORG_ID",NVL(TO_NUMBER(DECODE(SUBSTRB(:B1,1,1),'
',NULL,SUBSTRB(:B2,1,10))),(-99)))=NVL(TO_NUMBER(DECODE(SUBSTRB(:B3,1,1),' ',NULL,SUBSTRB(:B4,1,10))),(-99)))
36 - access("AP_INVOICE_DISTRIBUTIONS_ALL"."PREPAY_DISTRIBUTION_ID"="AP_INVOICE_DISTRIBUTIONS_ALL"."INVOICE
_DISTRIBUTION_ID")
37 - filter(NVL("AP_INVOICES_ALL"."ORG_ID",NVL(TO_NUMBER(DECODE(SUBSTRB(:B1,1,1),'
',NULL,SUBSTRB(:B2,1,10))),(-99)))=NVL(TO_NUMBER(DECODE(SUBSTRB(:B3,1,1),' ',NULL,SUBSTRB(:B4,1,10))),(-99)))
38 - access("AP_INVOICES_ALL"."INVOICE_ID"="AP_INVOICE_DISTRIBUTIONS_ALL"."INVOICE_ID")
39 - filter(NVL("PO_VENDOR_SITES_ALL"."ORG_ID",NVL(TO_NUMBER(DECODE(SUBSTRB(:B1,1,1),'
',NULL,SUBSTRB(:B2,1,10))),(-99)))=NVL(TO_NUMBER(DECODE(SUBSTRB(:B3,1,1),' ',NULL,SUBSTRB(:B4,1,10))),(-99)))
40 - access("AP_INVOICES_ALL"."VENDOR_SITE_ID"="PO_VENDOR_SITES_ALL"."VENDOR_SITE_ID")
41 - access("AP_INVOICES_ALL"."VENDOR_ID"="PV"."VENDOR_ID")
Note: cpu costing is off
92 rows selected.
看到 Note: cpu costing is off 我就知道DB 是9i
这个SQL语句要优化很简单，SQL调优做得太多了，看到index unique scan我就忽略它，因为它不会发生性能问题(相信我，遇到index unique scan你不要看它)
执行计划中引起我注意的地方有3个
1.VIEW PUSHED PREDICATE 表明它进行了谓词推入
18行，19行
从哪里看到有谓词推入呢？ 请注意观察18行 A"."INVOICE_ID"="AP_INVOICE_DISTRIBUTIONS_ALL 这个就把A的过滤条件给推入了
谓词推入是双刃剑，但是我看到的更多的案例是谓词推入反而引发性能问题，问题的原因在于谓词推入后CBO计算基数就 大大减小了。
可以用hint use_hash 强制CBO走hash join，这样CBO就不能进行谓词推入了
SELECT *
FROM (SELECT /*+ use_hash(a,b) */ A.INVOICE_ID,
A.VENDOR_ID,
A.INVOICE_NUM,
A.INVOICE_AMOUNT,
A.GL_DATE,
A.INVOICE_CURRENCY_CODE,
SUM(NVL(B.PREPAY_AMOUNT_APPLIED, 0)) PAID_AMOUNT,
A.INVOICE_AMOUNT - SUM(NVL(B.PREPAY_AMOUNT_APPLIED, 0)) REMAIN
FROM ap.AP_INVOICES_ALL A, APPS.AP_UNAPPLY_PREPAYS_V B
WHERE A.INVOICE_ID = B.INVOICE_ID(+)
AND A.ORG_ID = 126 /*:B4*/
AND A.SOURCE = 'OSM IMPORTED' /*:B3*/
AND A.INVOICE_NUM BETWEEN NVL( /*:B2*/ null, A.INVOICE_NUM) AND
NVL( /*:B1*/ null, A.INVOICE_NUM)
GROUP BY A.INVOICE_ID,
A.INVOICE_NUM,
A.INVOICE_AMOUNT,
A.VENDOR_ID,
A.GL_DATE,
A.INVOICE_CURRENCY_CODE)
WHERE REMAIN > 0 ;
也可以 ALTER SESSION SET "_push_join_predicate" = FALSE; 效果一样，最终的执行计划如下：
SQL> @$ORACLE_HOME/rdbms/admin/utlxpls
PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost |
-------------------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 1 | 69 | 723 |
|* 1 | FILTER | | | | |
| 2 | SORT GROUP BY | | 1 | 69 | 723 |
|* 3 | HASH JOIN OUTER | | 3 | 207 | 698 |
|* 4 | TABLE ACCESS FULL | AP_INVOICES_ALL | 3 | 153 | 694 |
| 5 | VIEW | AP_UNAPPLY_PREPAYS_V | 1 | 18 | 3 |
| 6 | NESTED LOOPS | | 1 | 372 | 3 |
| 7 | NESTED LOOPS | | 1 | 368 | 3 |
| 8 | NESTED LOOPS | | 1 | 361 | 2 |
| 9 | NESTED LOOPS | | 1 | 347 | 1 |
| 10 | NESTED LOOPS OUTER | | 1 | 334 | 1 |
| 11 | NESTED LOOPS OUTER | | 1 | 321 | 1 |
| 12 | NESTED LOOPS OUTER | | 1 | 295 | 1 |
| 13 | NESTED LOOPS OUTER | | 1 | 269 | 1 |
| 14 | NESTED LOOPS OUTER | | 1 | 243 | 1 |
| 15 | NESTED LOOPS OUTER | | 1 | 197 | 1 |
| 16 | NESTED LOOPS OUTER | | 1 | 157 | 1 |
| 17 | NESTED LOOPS OUTER | | 1 | 98 | 1 |
|* 18 | TABLE ACCESS BY INDEX ROWID| AP_INVOICE_DISTRIBUTIONS_ALL | 1 | 72 | 1 |
|* 19 | INDEX FULL SCAN | AP_INVOICE_DISTRIBUTIONS_N20 | 1 | | |
|* 20 | TABLE ACCESS BY INDEX ROWID| AP_TAX_CODES_ALL | 1 | 26 | |
|* 21 | INDEX UNIQUE SCAN | AP_TAX_CODES_U1 | 1 | | |
|* 22 | TABLE ACCESS BY INDEX ROWID | PO_DISTRIBUTIONS_ALL | 1 | 59 | |
|* 23 | INDEX UNIQUE SCAN | PO_DISTRIBUTIONS_U1 | 1 | | |
|* 24 | TABLE ACCESS BY INDEX ROWID | PO_HEADERS_ALL | 1 | 40 | |
|* 25 | INDEX UNIQUE SCAN | PO_HEADERS_U1 | 1 | | |
|* 26 | TABLE ACCESS BY INDEX ROWID | PO_LINE_LOCATIONS_ALL | 1 | 46 | |
|* 27 | INDEX UNIQUE SCAN | PO_LINE_LOCATIONS_U1 | 1 | | |
|* 28 | TABLE ACCESS BY INDEX ROWID | PO_LINES_ALL | 1 | 26 | |
|* 29 | INDEX UNIQUE SCAN | PO_LINES_U1 | 1 | | |
| 30 | TABLE ACCESS BY INDEX ROWID | RCV_TRANSACTIONS | 1 | 26 | |
|* 31 | INDEX UNIQUE SCAN | RCV_TRANSACTIONS_U1 | 1 | | |
| 32 | TABLE ACCESS BY INDEX ROWID | RCV_SHIPMENT_LINES | 1 | 26 | |
|* 33 | INDEX UNIQUE SCAN | RCV_SHIPMENT_LINES_U1 | 1 | | |
|* 34 | INDEX UNIQUE SCAN | RCV_SHIPMENT_HEADERS_U1 | 1 | 13 | |
|* 35 | TABLE ACCESS BY INDEX ROWID | AP_INVOICE_DISTRIBUTIONS_ALL | 1 | 13 | |
|* 36 | INDEX UNIQUE SCAN | AP_INVOICE_DISTRIBUTIONS_U2 | 1 | | |
|* 37 | TABLE ACCESS BY INDEX ROWID | AP_INVOICES_ALL | 1 | 14 | 1 |
|* 38 | INDEX UNIQUE SCAN | AP_INVOICES_U1 | 1 | | |
|* 39 | TABLE ACCESS BY INDEX ROWID | PO_VENDOR_SITES_ALL | 1 | 7 | 1 |
|* 40 | INDEX UNIQUE SCAN | PO_VENDOR_SITES_U1 | 1 | | |
|* 41 | INDEX UNIQUE SCAN | PO_VENDORS_U1 | 1 | 4 | |
-------------------------------------------------------------------------------------------------------------
Predicate Information (identified by operation id):
---------------------------------------------------
1 - filter("A"."INVOICE_AMOUNT"-SUM(NVL("B"."PREPAY_AMOUNT_APPLIED",0))>0)
3 - access("A"."INVOICE_ID"="B"."INVOICE_ID"(+))
4 - filter("A"."ORG_ID"=126 AND "A"."SOURCE"='OSM IMPORTED' AND
"A"."INVOICE_NUM">=NVL(NULL,"A"."INVOICE_NUM") AND "A"."INVOICE_NUM"<=NVL(NULL,"A"."INVOICE_NUM"))
18 - filter("AP_INVOICE_DISTRIBUTIONS_ALL"."AMOUNT"<0 AND
NVL("AP_INVOICE_DISTRIBUTIONS_ALL"."REVERSAL_FLAG",'N')<>'Y' AND
"AP_INVOICE_DISTRIBUTIONS_ALL"."LINE_TYPE_LOOKUP_CODE"='PREPAY' AND
NVL("AP_INVOICE_DISTRIBUTIONS_ALL"."ORG_ID",NVL(TO_NUMBER(DECODE(SUBSTRB(:B1,1,1),'
',NULL,SUBSTRB(:B2,1,10))),(-99)))=NVL(TO_NUMBER(DECODE(SUBSTRB(:B3,1,1),' ',NULL,SUBSTRB(:B4,1,10))),(-99)))
19 - filter("AP_INVOICE_DISTRIBUTIONS_ALL"."PREPAY_DISTRIBUTION_ID" IS NOT NULL)
20 - filter(NVL("AP_TAX_CODES_ALL"."ORG_ID"(+),NVL(TO_NUMBER(DECODE(SUBSTRB(:B1,1,1),'
',NULL,SUBSTRB(:B2,1,10))),(-99)))=NVL(TO_NUMBER(DECODE(SUBSTRB(:B3,1,1),' ',NULL,SUBSTRB(:B4,1,10))),(-99)))
21 - access("AP_INVOICE_DISTRIBUTIONS_ALL"."TAX_CODE_ID"="AP_TAX_CODES_ALL"."TAX_ID"(+))
22 - filter(NVL("PO_DISTRIBUTIONS_ALL"."ORG_ID"(+),NVL(TO_NUMBER(DECODE(SUBSTRB(:B1,1,1),'
',NULL,SUBSTRB(:B2,1,10))),(-99)))=NVL(TO_NUMBER(DECODE(SUBSTRB(:B3,1,1),' ',NULL,SUBSTRB(:B4,1,10))),(-99)))
23 - access("AP_INVOICE_DISTRIBUTIONS_ALL"."PO_DISTRIBUTION_ID"="PO_DISTRIBUTIONS_ALL"."PO_DISTRIBUTION_ID"
(+))
24 - filter(NVL("PO_HEADERS_ALL"."ORG_ID"(+),NVL(TO_NUMBER(DECODE(SUBSTRB(:B1,1,1),'
',NULL,SUBSTRB(:B2,1,10))),(-99)))=NVL(TO_NUMBER(DECODE(SUBSTRB(:B3,1,1),' ',NULL,SUBSTRB(:B4,1,10))),(-99)))
25 - access("PO_DISTRIBUTIONS_ALL"."PO_HEADER_ID"="PO_HEADERS_ALL"."PO_HEADER_ID"(+))
26 - filter(NVL("PO_LINE_LOCATIONS_ALL"."ORG_ID"(+),NVL(TO_NUMBER(DECODE(SUBSTRB(:B1,1,1),'
',NULL,SUBSTRB(:B2,1,10))),(-99)))=NVL(TO_NUMBER(DECODE(SUBSTRB(:B3,1,1),' ',NULL,SUBSTRB(:B4,1,10))),(-99)))
27 - access("PO_DISTRIBUTIONS_ALL"."LINE_LOCATION_ID"="PO_LINE_LOCATIONS_ALL"."LINE_LOCATION_ID"(+))
28 - filter(NVL("PO_LINES_ALL"."ORG_ID"(+),NVL(TO_NUMBER(DECODE(SUBSTRB(:B1,1,1),'
',NULL,SUBSTRB(:B2,1,10))),(-99)))=NVL(TO_NUMBER(DECODE(SUBSTRB(:B3,1,1),' ',NULL,SUBSTRB(:B4,1,10))),(-99)))
29 - access("PO_LINE_LOCATIONS_ALL"."PO_LINE_ID"="PO_LINES_ALL"."PO_LINE_ID"(+))
31 - access("AP_INVOICE_DISTRIBUTIONS_ALL"."RCV_TRANSACTION_ID"="RTXNS"."TRANSACTION_ID"(+))
33 - access("RTXNS"."SHIPMENT_LINE_ID"="RSL"."SHIPMENT_LINE_ID"(+))
34 - access("RSL"."SHIPMENT_HEADER_ID"="RSH"."SHIPMENT_HEADER_ID"(+))
35 - filter(NVL("AP_INVOICE_DISTRIBUTIONS_ALL"."ORG_ID",NVL(TO_NUMBER(DECODE(SUBSTRB(:B1,1,1),'
',NULL,SUBSTRB(:B2,1,10))),(-99)))=NVL(TO_NUMBER(DECODE(SUBSTRB(:B3,1,1),' ',NULL,SUBSTRB(:B4,1,10))),(-99)))
36 - access("AP_INVOICE_DISTRIBUTIONS_ALL"."PREPAY_DISTRIBUTION_ID"="AP_INVOICE_DISTRIBUTIONS_ALL"."INVOICE
_DISTRIBUTION_ID")
37 - filter(NVL("AP_INVOICES_ALL"."ORG_ID",NVL(TO_NUMBER(DECODE(SUBSTRB(:B1,1,1),'
',NULL,SUBSTRB(:B2,1,10))),(-99)))=NVL(TO_NUMBER(DECODE(SUBSTRB(:B3,1,1),' ',NULL,SUBSTRB(:B4,1,10))),(-99)))
38 - access("AP_INVOICES_ALL"."INVOICE_ID"="AP_INVOICE_DISTRIBUTIONS_ALL"."INVOICE_ID")
39 - filter(NVL("PO_VENDOR_SITES_ALL"."ORG_ID",NVL(TO_NUMBER(DECODE(SUBSTRB(:B1,1,1),'
',NULL,SUBSTRB(:B2,1,10))),(-99)))=NVL(TO_NUMBER(DECODE(SUBSTRB(:B3,1,1),' ',NULL,SUBSTRB(:B4,1,10))),(-99)))
40 - access("AP_INVOICES_ALL"."VENDOR_SITE_ID"="PO_VENDOR_SITES_ALL"."VENDOR_SITE_ID")
41 - access("AP_INVOICES_ALL"."VENDOR_ID"="PV"."VENDOR_ID")
Note: cpu costing is off
93 rows selected.
这个SQL之所以跑很慢，是因为18行谓词推入，而它又是外部nested loop的驱动行源，这样导致过滤AP_INVOICE_DISTRIBUTIONS_ALL表灰常多次(由于无法连接他DB，无法计算过滤多少次）