RE: Ideas to workaround view merge being disabled.

From: Boyle, Christopher J. <Christopher.J.Boyle_at_espn.com>
Date: Thu, 08 Jan 2004 09:09:53 -0800
Message-ID: <F001.005DC28D.20040108090953@fatcity.com>

Would using a function to return DECODE(TD.description, NULL, SC.DESCRIPTION, TD.DESCRIPTION) achieve what you are after? (assuming you can do that in 8.1.7, I am not sure)

-----Original Message-----
Sent: Thursday, January 08, 2004 11:59 AM To: Multiple recipients of list ORACLE-L

Hey all,

So, there I am on 8.1.7.4.0 creating some SQL suitable for a view:

SELECT

TS.username,
TS.reportdate,
TS.hours AS hours,

DECODE(TD.description, NULL, SC.DESCRIPTION, TD.DESCRIPTION) AS TASK_DESCRIPTION,
TEAM.teamtype AS TeamType,

TS.productline,
ST.SUBTASKID "DEFECTID",
ST.DESCRIPTION "DEFECT_DESCRIPTION"

FROM

T1 TS,
T2 ST,
T3 TD,
TEAM ,

T5 SC
WHERE

TS.TASKID = TD.TASKID (+) AND
TS.TEAMID = TEAM.TEAMID AND
TS.WORKORDERNO = SC.WORKORDERNO (+)

AND TS.operation = SC.OPERATIONNO (+)
AND TS.TASKID = ST.TASKID (+); Works great, except when the view is created from this SQL because according to Metalink article 1030221.6, the DECODE function is preventing the view from being merged, causing an FTS on the T5 (SC) table. Of course, this table is

---

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Author: Boyle, Christopher J.
  INET: Christopher.J.Boyle_at_espn.com

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