Oracle-L: RE: SQL Power !!

From: MacGregor, Ian A. <ian_at_SLAC.Stanford.EDU>
Date: Fri, 09 May 2003 12:04:51 -0800
Message-ID: <F001.00595BE0.20030509120451@fatcity.com>

22 eh? Did it ever run? Was Oracle forever trying to acquire a cache buffer chain latch. People or query generators needlessly joining views to their base tables is a big headache for us. Peoplesoft (in-the-head) loves to do this.

Ian MacGregor
Stanford Linear Accelerator Center
ian_at_SLAC.Stanford.edu

-----Original Message-----
Sent: Friday, May 09, 2003 10:27 AM
To: Multiple recipients of list ORACLE-L

Kirti,

I can challenge that !

I just finished optimising a query produced by developpement, once printed it was 6 pages long and accessed many tables.

But the best part is that a table was accessed 22 times. Yes 22 times (inline views madness).

After spending 1 hour trying to understand the beast without success, I just call the guy and ask what was the qestion the query was supposed to answer.

Stephane Paquette
Administrateur de bases de donnees
Database Administrator
Standard Life
www.standardlife.ca
Tel (514) 925-7187
stephane.paquette_at_standardlife.ca <mailto:stephane.paquette_at_standardlife.ca>

-----Original Message-----
Kirti
Sent: Friday, May 09, 2003 12:22 PM
To: Multiple recipients of list ORACLE-L

Here is what was caught by my co-worker recently. One of the Developers, of our Preferred Vendor, actually wrote this stuff. This is invoked by the one of the forms on the intranet Web application. I was told there are quite a few scripts like this one. Performance issues? No one is complaining (yet) .... so who cares :) Enjoy... - Kirti
SELECT DISTINCT CUST1.customer_id, LIST1.finding_name, NVL(LIST1.atn_npa, ' '), NVL(LIST1.atn_cop, ' '), NVL(LIST1.atn_line_no, ' '), LIST1.lni, NVL(LIST1.listed_tn_npa, ' '), NVL(LIST1. listed_tn_cop, ' '), NVL(LIST1.listed_tn_line_no, ' '), NVL(ADDR1.house_no, ' '), NVL(ADDR1.house_no_suff, ' '), NVL(ADDR1.pre_directional, ' '), NVL(ADDR1.street_name, ' '), NVL(ADDR1.post_directional, ' '), NVL(ADDR1.sub_location, ' '), NVL(ADDR1.Community, ' '), NVL(ADDR1.zip_five, ' '), NVL(ADDR1.state_abbr_override, ' '), LIST1.listing_status, NVL(CUST1.customer_type, ' '), NVL(CUST1.home_data_base, ' '), NVL(CUST1.default_market_code, ' '), NVL(TELCO.TELCO_CODE, ' '), NVL(TELCO.TELCO_NAME, ' '), NVL(TO_CHAR(LIST1.establish_date,'YYYYMMDD'),' '), NVL((select 'Y' from query q, dir_curr_issue where q.customer_id = cust1.customer_id and q.query_status in (1,3,4) and q.product_code = dir_curr_issue.directory_code and q.product_issue_num >= dir_curr_issue.directory_issue_num and rownum = 1), 'N' ) ,
NVL(CUST1.TELCO_CREDIT_STOP, ' '), NVL(CUST1.BARS_CREDIT_STOP, 0), NVL(CUST1.EAST_CREDIT_STOP, ' '), NVL(CUST1.EARLY_CONT_CUST_IND, ' '), NVL(LIST1.SOHO_LST_IND, ' '), NVL(CUST1.NI_AMOUNT, 0), NVL(CUST1.PI_AMOUNT, 0), HEADING.short_heading_name, NVL(CUST1.CUST_PROSPECT_CODE, 0), NVL(CUST1.RETIREMENT_STATUS, ' '), (SELECT nvl(sum(DIRECTORY_SUMMARY0.pi_amount),0) FROM
DIRECTORY_ISSUE e, DIRECTORY_SUMMARY DIRECTORY_SUMMARY0, ASSIGNMENT ASSIGNMENT_C, assignment ASSIGNMENT_T,DIR_CURR_ISSUE DIR_CURR_ISSUE0 WHERE DIRECTORY_SUMMARY0.customer_id = CUST1.customer_id and DIRECTORY_SUMMARY0.product_code = DIR_CURR_ISSUE0.directory_code and DIRECTORY_SUMMARY0.product_issue_num = DIR_CURR_ISSUE0.directory_issue_num and DIRECTORY_SUMMARY0.PRODUCT_CODE = E.DIRECTORY_CODE and DIRECTORY_SUMMARY0.PRODUCT_ISSUE_NUM = e.directory_issue_num and e.directory_del_ind != :1 and DIRECTORY_SUMMARY0.canvass_code = '' and DIRECTORY_SUMMARY0.T_SPLIT_ASSIGN_ID = ASSIGNMENT_T.assignment_id (+) and DIRECTORY_SUMMARY0.current_assign_id = ASSIGNMENT_C.assignment_id (+) AND :2 in (ASSIGNMENT_C.sales_rep,ASSIGNMENT_T.sales_rep)) ,(CASE WHEN EXISTS( SELECT 1
FROM
DIR_CURR_ISSUE DC, DIRECTORY_SUMMARY DS
WHERE

CUST1.customer_id = DS.customer_id
AND DS.product_code = DC.directory_code
AND DS.PRODUCT_ISSUE_NUM >= DC.DIRECTORY_ISSUE_NUM

AND DS.curr_special_flag = 20 and rownum = 1) THEN 'Y'
ELSE 'N' END )
, (CASE WHEN EXISTS ( SELECT 1
FROM
ITEMS_IN_CLAIM IC, DIRECTORY_SUMMARY DIR1 WHERE
IC.customer_id = CUST1.customer_id
AND DIR1.customer_id = CUST1.customer_id

AND IC.PRODUCT = DIR1.product_code
AND IC.issue_number = DIR1.product_issue_num
AND IC.DELETE_INDICATOR ='N' )

THEN 'Y'
ELSE 'N' END ),
(CASE WHEN EXISTS ( SELECT 1

FROM
DIRECTORY_ISSUE DI, DIRECTORY_SUMMARY DIR1 WHERE
DIR1.customer_id = CUST1.customer_id
AND DIR1.product_code = DI.directory_code AND DIR1.product_issue_num = DI.directory_issue_num AND ADD_MONTHS(TO_DATE(:3,'YYYYMMDD'),1) > DI.TELCO_CLOSE_DATE AND TO_DATE(:4,'YYYYMMDD') < DI.TELCO_CLOSE_DATE AND DI.TELCO_CLOSE_DATE IS NOT NULL) THEN 'Y' ELSE 'N' END ) , NVL((select CONTACT.CONTACT_NAME from CONTACT where CUST1.CONTACT_ID = CONTACT.CONTACT_ID(+)), ' ') FROM LISTING LIST1, CUSTOMER CUST1, ADDRESS ADDR1, DIRECTORY_SUMMARY, TELCO, DIR_CURR_ISSUE, ASSIGNMENT, HEADING, ITEM_DIR WHERE CUST1.main_main_listing_id = LIST1.listing_id(+) AND LIST1.last_version_ind(+) = :5 AND
LIST1.listed_address_id = ADDR1.address_id(+) AND TELCO.TELCO_CODE = LIST1.TELCO_ID AND DIRECTORY_SUMMARY.customer_id = CUST1.customer_id AND DIRECTORY_SUMMARY.PRODUCT_CODE = DIR_CURR_ISSUE.DIRECTORY_CODE AND DIRECTORY_SUMMARY.PRODUCT_ISSUE_NUM >= DIR_CURR_ISSUE.DIRECTORY_ISSUE_NUM AND
ASSIGNMENT.SALES_REP = :6 AND
CUST1.DOMINANT_HEADING = HEADING.HEADING_CODE (+)AND NOT EXISTS
(SELECT 1 FROM DIRECTORY_SUMMARY DS, ASSIGNMENT ASSIGNMENT_C, assignment ASSIGNMENT_T,DIR_CURR_ISSUE DC WHERE DS.customer_id = CUST1.customer_id AND DS.PRODUCT_CODE = DC.DIRECTORY_CODE AND DS.PRODUCT_ISSUE_NUM >= DC.DIRECTORY_ISSUE_NUM AND DS.T_SPLIT_ASSIGN_ID = ASSIGNMENT_T.assignment_id (+) AND DS.current_assign_id = ASSIGNMENT_C.assignment_id (+) AND :7 in (ASSIGNMENT_C.sales_rep,ASSIGNMENT_T.sales_rep)
AND DS.RETIREMENT_STATUS!= :8 ) AND DIRECTORY_SUMMARY.RETIREMENT_STATUS in (:9, :10) AND CUST1.customer_id = ITEM_DIR.customer_id AND DIRECTORY_SUMMARY.PRODUCT_CODE =ITEM_DIR.PRODUCT_CODE AND DIRECTORY_SUMMARY.PRODUCT_ISSUE_NUM =ITEM_DIR.PRODUCT_ISSUE_NUM AND ITEM_DIR.LAST_VERSION_IND = 'Y' AND ( ITEM_DIR.heading_code = :11) AND rownum <= :12 AND DIRECTORY_SUMMARY.CURRENT_ASSIGN_ID = ASSIGNMENT.ASSIGNMENT_ID UNION SELECT DISTINCT CUST1.customer_id, LIST1.finding_name, NVL(LIST1.atn_npa, ' '), NVL(LIST1.atn_cop, ' '), NVL(LIST1.atn_line_no, ' '), LIST1.lni, NVL(LIST1.listed_tn_npa, ' '), NVL(LIST1. listed_tn_cop, ' '), NVL(LIST1.listed_tn_line_no, ' '), NVL(ADDR1.house_no, ' '), NVL(ADDR1.house_no_suff, ' '), NVL(ADDR1.pre_directional, ' '), NVL(ADDR1.street_name, ' '), NVL(ADDR1.post_directional, ' '), NVL(ADDR1.sub_location, ' '), NVL(ADDR1.Community, ' '), NVL(ADDR1.zip_five, ' '), NVL(ADDR1.state_abbr_override, ' '), LIST1.listing_status, NVL(CUST1.customer_type, ' '), NVL(CUST1.home_data_base, ' '), NVL(CUST1.default_market_code, ' '), NVL(TELCO.TELCO_CODE, ' '), NVL(TELCO.TELCO_NAME, ' '), NVL(TO_CHAR(LIST1.establish_date,'YYYYMMDD'),' '), NVL((select 'Y' from query q, dir_curr_issue where q.customer_id = cust1.customer_id and q.query_status in (1,3,4) and q.product_code = dir_curr_issue.directory_code and q.product_issue_num >= dir_curr_issue.directory_issue_num and rownum = 1), 'N' ) ,
NVL(CUST1.TELCO_CREDIT_STOP, ' '), NVL(CUST1.BARS_CREDIT_STOP, 0), NVL(CUST1.EAST_CREDIT_STOP, ' '), NVL(CUST1.EARLY_CONT_CUST_IND, ' '), NVL(LIST1.SOHO_LST_IND, ' '), NVL(CUST1.NI_AMOUNT, 0), NVL(CUST1.PI_AMOUNT, 0), HEADING.short_heading_name, NVL(CUST1.CUST_PROSPECT_CODE, 0), NVL(CUST1.RETIREMENT_STATUS, ' '), (SELECT nvl(sum(DIRECTORY_SUMMARY0.pi_amount),0) FROM
DIRECTORY_ISSUE e, DIRECTORY_SUMMARY DIRECTORY_SUMMARY0, ASSIGNMENT ASSIGNMENT_C, assignment ASSIGNMENT_T,DIR_CURR_ISSUE DIR_CURR_ISSUE0 WHERE DIRECTORY_SUMMARY0.customer_id = CUST1.customer_id and DIRECTORY_SUMMARY0.product_code = DIR_CURR_ISSUE0.directory_code and DIRECTORY_SUMMARY0.product_issue_num = DIR_CURR_ISSUE0.directory_issue_num and DIRECTORY_SUMMARY0.PRODUCT_CODE = E.DIRECTORY_CODE and DIRECTORY_SUMMARY0.PRODUCT_ISSUE_NUM = e.directory_issue_num and e.directory_del_ind != :13 and DIRECTORY_SUMMARY0.canvass_code = '' and DIRECTORY_SUMMARY0.T_SPLIT_ASSIGN_ID = ASSIGNMENT_T.assignment_id (+) and DIRECTORY_SUMMARY0.current_assign_id = ASSIGNMENT_C.assignment_id (+) AND :14 in (ASSIGNMENT_C.sales_rep,ASSIGNMENT_T.sales_rep)) ,(CASE WHEN EXISTS( SELECT 1
FROM
DIR_CURR_ISSUE DC, DIRECTORY_SUMMARY DS
WHERE

CUST1.customer_id = DS.customer_id
AND DS.product_code = DC.directory_code
AND DS.PRODUCT_ISSUE_NUM >= DC.DIRECTORY_ISSUE_NUM

AND IC.PRODUCT = DIR1.product_code
AND IC.issue_number = DIR1.product_issue_num
AND IC.DELETE_INDICATOR ='N' )

--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
--
Author: Deshpande, Kirti
  INET: kirti.deshpande_at_verizon.com

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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Stephane Paquette
  INET: stephane.paquette_at_standardlife.ca

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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: MacGregor, Ian A.
  INET: ian_at_SLAC.Stanford.EDU

Fat City Network Services    -- 858-538-5051 http://www.fatcity.com
San Diego, California        -- Mailing list and web hosting services
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(or the name of mailing list you want to be removed from).  You may

also send the HELP command for other information (like subscribing).

Received on Fri May 09 2003 - 15:04:51 CDT