Explain: In List Iterator

From: Baker, Barbara <bbaker_at_denvernewspaperagency.com>
Date: Tue, 09 Apr 2002 13:11:16 -0800
Message-ID: <F001.0043FF60.20020409131116@fatcity.com>

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

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Received on Tue Apr 09 2002 - 16:11:16 CDT