Oracle-L: RE: Query tuning help needed

From: Jamadagni, Rajendra <Rajendra.Jamadagni_at_espn.com>
Date: Tue, 29 Apr 2003 09:26:55 -0800
Message-ID: <F001.0058C066.20030429092655@fatcity.com>

Ranga,

I think you probably want to change

,SUM(CASE WHEN t.TYPE IN ('OD','OT','TD','TT') THEN
NVL(TT_TIME_IN_MIN,0) seg_time

,SUM(CASE WHEN t.TYPE IN ('OD','OT','TD','TT') THEN
NVL(TT_TIME_IN_MIN,0)+(TD_TIME_IN_MIN,0)+(OT_TIME_IN_MIN,0)+(OD_TIME_IN_MIN, 0) seg_time

... this is not supposed to be an exact query, but just an idea to get rid of redundant SQL statement ...

Raj

Rajendra dot Jamadagni at nospamespn dot com All Views expressed in this email are strictly personal. QOTD: Any clod can have facts, having an opinion is an art !

-----Original Message-----
Sent: Tuesday, April 29, 2003 12:57 PM
To: Multiple recipients of list ORACLE-L

Brad, Ranga

I am sorry but I have to disagree, stored procedure is not an answer to this problem. I prefer to call this I-saw-a-new-feature-and-i-want-to-use-it syndrome.

How about following ...

SELECT ORIGIN

      ,DESTINATION 
          ,SERVICE_CODE 
          ,CASE WHEN SERVICE_CODE = 'X' THEN AVG(SEG_TIME) + 1 
            WHEN SERVICE_CODE = 'Y' THEN AVG(SEG_TIME) + 2 
            WHEN SERVICE_CODE = 'Z' THEN AVG(SEG_TIME) + 3 
            WHEN SERVICE_CODE = 'Q' THEN AVG(SEG_TIME) + 4 END AS
ADD_ON_VALUE 
      ,SYSDATE 
          ,'SYSTEM' 
  FROM 
          (SELECT META_ROUTING_KEY     AS ROUTE_KEY 


             ,ST1.STATION_CODE     AS ORIGIN 

             ,ST2.STATION_CODE     AS DESTINATION 

             ,SERVICE_CODE 

             ,SUM(CASE WHEN t.TYPE IN ('OD','OT','TD','TT') THEN

NVL(TT_TIME_IN_MIN,0) seg_time 
        FROM SEG_MIN_TIMES M, STATION ST3, STATION ST4,PRY_TWO_MR_TRANSIT T,
SERVICE 
       WHERE M.ORIGIN = ST3.STATION_CODE 
         AND M.DESTINATION = ST4.STATION_CODE 
         AND ST3.STN_KEY = T.SEG_ORG_STN_KEY 
         AND ST4.STN_KEY = T.SEG_DEST_STN_KEY 
         AND M.SERVICE = SERVICE_CODE 
         AND SERVICE_CODE IN ('X','Y','Z','Q') 
       GROUP BY META_ROUTING_KEY, ST1.STATION_CODE,
ST2.STATION_CODE,SERVICE_CODE 
          )

GROUP BY ORIGIN, DESTINATION, SERVICE_CODE /

Test and Test and Test ... this should give you an idea though ... Raj

Rajendra dot Jamadagni at nospamespn dot com All Views expressed in this email are strictly personal. QOTD: Any clod can have facts, having an opinion is an art !

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Jamadagni, Rajendra
  INET: Rajendra.Jamadagni_at_espn.com

Fat City Network Services    -- 858-538-5051 http://www.fatcity.com
San Diego, California        -- Mailing list and web hosting services
---------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from).  You may
also send the HELP command for other information (like subscribing).



text/plain attachment: ESPN_Disclaimer.txt

Received on Tue Apr 29 2003 - 12:26:55 CDT