RE: Explain: In List Iterator

Thanks, Lisa!
I have not tkprof'd it. I'm beginning to wonder if the thing will ever complete.
I think I might instead suggest ever-so-gently to the developer that this doesn't belong in the production database.

(See, Dennis!! I'm becoming the kinder, gentler dba...) Barb

> ----------
> From: Koivu, Lisa[SMTP:lisa.koivu_at_efairfield.com]
> Sent: Tuesday, April 09, 2002 2:42 PM
> To: 'ORACLE-L_at_fatcity.com'
> Cc: 'bbaker_at_denvernewspaperagency.com'
> Subject: RE: Explain: In List Iterator
>
> Hi Barbara,
>
> I believe 'in list iterator' is the way the optimizer is handling one of
> your in () statements in your query. Beware in lists with a large number
> of
> values in the set... as expansion of these in lists can create an
> incredibly
> ugly OR'd query. Saw this once and gave it the no_expand hint - problem
> solved. However I don't think that's the problem here - have you tkprof'd
> it?
>
> This is one nasty query. Distinct, outer join, trunc on a date, cartesian
> joins... yuck!
>
> Lisa Koivu
> Oracle Database Tank
> Fairfield Resorts, Inc.
> 954-935-4117
>
>
> > -----Original Message-----
> > From: Baker, Barbara [SMTP:bbaker_at_denvernewspaperagency.com]
> > Sent: Tuesday, April 09, 2002 5:11 PM
> > To: Multiple recipients of list ORACLE-L
> > Subject: Explain: In List Iterator
> >
> > Hi, list.
> > I'm trying to find out what's eating my system. I found the query, and
> > explain'ed it. I've never seen an "in list iterator" before. Can
> anyone
> > tell me what that is???
> >
> > Thanks!!
> >
> > Barb
> >
> > Execution Plan
> > ----------------------------------------------------------
> > 0 SELECT STATEMENT Optimizer=CHOOSE (Cost=2398 Card=25814
> > Bytes=9964204)
> > 1 0 SORT (UNIQUE) (Cost=2398 Card=25814 Bytes=9964204)
> > 2 1 MERGE JOIN (CARTESIAN) (Cost=969 Card=25814 Bytes=9964204)
> > 3 2 NESTED LOOPS (OUTER) (Cost=1 Card=1 Bytes=380)
> > 4 3 NESTED LOOPS (Cost=8 Card=1 Bytes=324)
> > 5 4 INLIST ITERATOR (CONCATENATED)
> > 6 5 TABLE ACCESS (BY INDEX ROWID) OF 'AD' (Cost=1590
> > Card=145 Bytes=20300)
> > 7 6 BITMAP CONVERSION (TO ROWIDS)
> > 8 7 BITMAP CONVERSION (FROM ROWIDS)
> > 9 8 INDEX (RANGE SCAN) OF 'I_AD2' (NON-UNIQUE)
> > 10 4 TABLE ACCESS (BY INDEX ROWID) OF 'PUB' (Cost=1
> > Card=3600
> > Bytes=662400)
> > 11 10 INDEX (UNIQUE SCAN) OF 'I_PUB1' (UNIQUE)
> > 12 3 TABLE ACCESS (BY INDEX ROWID) OF 'INVROWS' (Cost=1
> > Card=627725 Bytes=35152600)
> > 13 12 INDEX (RANGE SCAN) OF 'I_INVR1' (NON-UNIQUE) (Cost
> =1
> > Card=627725)
> > 14 2 SORT (JOIN) (Cost=968 Card=25814 Bytes=154884)
> > 15 14 TABLE ACCESS (FULL) OF 'CUSTOMER' (Cost=968 Card=25814
> > Bytes=154884)
> >
> >
> >
> >
> > SELECT DISTINCT a.serieno, p.paper, p.adno, p.pubno, p.class, p.xsize,
> > p.ysize,
> > p.state, trunc(p.mdate) mdate, p.vno, a.unet, trunc(a.rdate) rdate,
> > trunc(a.startdate) startdate, trunc(a.enddate) enddate, a.ratecode,
> > a.cus4name,
> > a.cus2no, i.dcode, i.ino FROM arcdb.ad a, arcdb.pub p, arcdb.invrows i,
> > advdb.customer c WHERE p.adno = a.adno AND p.vno = a.vno AND p.adno =
> > i.adno(+)
> > AND p.vno = i.vno(+) AND p.pubno = i.pubno(+) AND a.serieno IN
> > (7,8,24,31,33,39,52,58,60,63,137,144,419,434,440,444,445,451,463) AND
> > p.paper =
> > 'DNA' AND p.state IN ('NOT', 'VAR') AND p.adno > 0 AND p.pubno = 1 AND
> > p.vnoflag
> > = 'Y'AND c.cgrno = 'TT' AND trunc(a.rdate) BETWEEN to_date('01-MAR-02',
> > 'DD-MON-YY') AND to_date('07-MAR-02', 'DD-MON-YY')
> >
> > --
> > Please see the official ORACLE-L FAQ: http://www.orafaq.com
> > --
> > Author: Baker, Barbara
> > INET: bbaker_at_denvernewspaperagency.com
> >
> > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
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>

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Baker, Barbara
  INET: bbaker_at_denvernewspaperagency.com

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
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