Setting up a query - difference between 'A-lines' and 'E '.

Hi all

I use 11g R2 and I'm trying to deal with a request for some time now, but still no luck. Watching my plan to explain, I have a difference between my E-lines and my A. I can't understand why. Almost all my E-lines are equal to 1. All my paintings are statistics updated with as histograms.

What else can I check?

Thank you very much.
/* 65671b48 */
select distinct T1830.CAL_DT as c1,
     T17.NOM_CONTRACTANT as c2,
     T24.NOM_CONTRAT as c3,
     T2098.NAME as c4,
     T210.NOM_FLUIDE as c5,
     T160.GEO_CODE as c6,
     T160.ADDRESS as c7,
     T160.COMMUNE as c8,
     T122.NOM_OFFRE as c9,
     T1011.SERIAL_NUMBER as c10,
     T1191.METER_MODULE_REF_NO as c11,
     T2098.CUSTOM_DATA as c12,
     T217.NOM_TYP_PDC as c13,
     T949.RADIO_MODULE_REF_NO as c14,
     T786.ASSOCIATE_DATE as c15,
     T786.INSTALLATION_DATE as c16,
     T786.NB_DAYS_10_WITHOUT as c17,
     ( TRUNC( TO_DATE('2013-02-21' , 'YYYY-MM-DD') ) - TRUNC(  cast(T786.INDEX_BEFORE_MIDNIGHT_DATE as TIMESTAMP ) ) ) as c18,
     ( TRUNC( TO_DATE('2013-02-21' , 'YYYY-MM-DD') ) - TRUNC(  cast(T786.QMIN_LAST_DATE as TIMESTAMP ) ) ) as c19,
     floor(T786.INDEX_COUNT_10 * 100 / (4 * 10)) as c20,
     floor(T786.INDEX_COUNT_30 * 100 / (4 * 30)) as c21,
     T786.NB_RECEIVERS_TRANS as c22,
     T2158.TXT_PERFORMANCE as c23,
     T2186.TXT_DIAGNOSYS as c24
from 
     DIM_CUSTOMER T2098 /* D6 Customer */ ,
     DIM_PERFORMANCE T2158 /* D7 Performance */ ,
     (
          DIM_OFFRE T122 inner join (
               DIM_CONTRAT T24 inner join (
                    DIM_CONTRACTANT T17 inner join (
                         (
                              (
                                   (
                                        DIM_RADIO_MODULE T949 /* D1 Radio Module */  inner join (
                                             DIM_METER_MODULE T1191 /* D2 Meter Module */  inner join (
                                                  DIM_SERVICE_POINT T160 inner join (
                                                       DIM_DATE T1830 /* D5 Date */  inner join (
                                                            DIM_METER T1011 /* D4 Meter */  inner join FAC_DAILY_TRANS_PERFORM T786 /* F1 Fac Daily Trans Perform */  On T786.METER_KEY = T1011.METER_KEY) On T786.DATE_KEY = T1830.DATE_KEY) On T160.SERVICE_POINT_KEY = T786.SERVICE_POINT_KEY) On T786.METER_MODULE_KEY = T1191.METER_MODULE_KEY) On T786.RADIO_MODULE_KEY = T949.RADIO_MODULE_KEY) inner join DIM_TYP_PDC T217 On T160.TYP_PDC_KEY = T217.TYP_PDC_KEY) inner join DIM_TYP_FLUIDE T210 On T160.FLUIDE_KEY = T210.FLUIDE_KEY) inner join REL_SERVICE_POINT_CONTRAT T298 On T160.SERVICE_POINT_KEY = T298.SERVICE_POINT_KEY) On T17.CONTRACTANT_KEY = T298.CONTRACTANT_KEY) On T17.CONTRACTANT_KEY = T24.CONTRACTANT_KEY and T24.CONTRAT_KEY = T298.CONTRAT_KEY) On T122.OFFRE_KEY = T298.OFFRE_KEY) left outer join 
          DIM_DIAGNOSYS T2186 /* D8 Diagnosys */  On T786.DIAGNOSYS_KEY = T2186.DIAGNOSYS_KEY
where  ( T786.CUSTOMER_KEY = T2098.CUSTOMER_KEY and T17.NOM_CONTRACTANT = 'ER Rhône Alpes Auvergne' and T24.NOM_CONTRAT = 'CHAVANOZ' and T786.PERFORMANCE_KEY = T2158.PERFORMANCE_KEY and T1830.CAL_DT = TO_DATE('2013-02-09 00:00:00' , 'YYYY-MM-DD HH24:MI:SS') ) 
order by c1, c2, c3, c4, c5, c6, c7, c8, c9, c10, c11, c12, c13, c14, c15, c16, c17, c18, c19, c20, c21, c22, c23, c24


Plan hash value: 3221242991
 
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| Id  | Operation                                      | Name                      | Starts | E-Rows | A-Rows |   A-Time   | Buffers | Reads  | Writes |  OMem |  1Mem |  O/1/M   | Max-Tmp |
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|   0 | SELECT STATEMENT                               |                           |      1 |        |    311 |00:01:56.92 |   30325 |  19042 |     31 |       |       |          |         |
|   1 |  SORT ORDER BY                                 |                           |      1 |     90 |    311 |00:01:56.92 |   30325 |  19042 |     31 |   279K|   279K|          |   16384 |
|   2 |   HASH UNIQUE                                  |                           |      1 |     90 |    311 |00:01:56.89 |   30318 |  19011 |      0 |   702K|   702K|     1/0/0|         |
|   3 |    NESTED LOOPS                                |                           |      1 |        |    311 |00:01:56.88 |   30318 |  19011 |      0 |       |       |          |         |
|   4 |     NESTED LOOPS                               |                           |      1 |     90 |    311 |00:01:54.84 |   30007 |  18700 |      0 |       |       |          |         |
|   5 |      NESTED LOOPS                              |                           |      1 |     90 |    311 |00:01:52.84 |   29383 |  18396 |      0 |       |       |          |         |
|   6 |       NESTED LOOPS                             |                           |      1 |     90 |    311 |00:01:47.87 |   28448 |  17783 |      0 |       |       |          |         |
|   7 |        NESTED LOOPS                            |                           |      1 |     90 |    311 |00:01:43.29 |   27513 |  17181 |      0 |       |       |          |         |
|*  8 |         HASH JOIN                              |                           |      1 |     90 |    311 |00:01:39.18 |   26571 |  16559 |      0 |   909K|   909K|     1/0/0|         |
|   9 |          TABLE ACCESS FULL                     | DIM_PERFORMANCE           |      1 |      5 |      5 |00:00:00.01 |       6 |      6 |      0 |       |       |          |         |
|  10 |          NESTED LOOPS OUTER                    |                           |      1 |     90 |    311 |00:01:39.16 |   26565 |  16553 |      0 |       |       |          |         |
|  11 |           NESTED LOOPS                         |                           |      1 |     90 |    311 |00:01:39.16 |   26565 |  16553 |      0 |       |       |          |         |
|* 12 |            HASH JOIN                           |                           |      1 |    140 |    311 |00:00:04.98 |    1541 |   1170 |      0 |  1000K|  1000K|     1/0/0|         |
|  13 |             TABLE ACCESS FULL                  | DIM_TYP_FLUIDE            |      1 |      3 |      3 |00:00:00.01 |       6 |      6 |      0 |       |       |          |         |
|* 14 |             HASH JOIN                          |                           |      1 |    140 |    311 |00:00:04.97 |    1535 |   1164 |      0 |   955K|   955K|     1/0/0|         |
|  15 |              TABLE ACCESS FULL                 | DIM_TYP_PDC               |      1 |      3 |      3 |00:00:00.01 |       6 |      6 |      0 |       |       |          |         |
|  16 |              NESTED LOOPS                      |                           |      1 |        |    311 |00:00:04.96 |    1529 |   1158 |      0 |       |       |          |         |
|  17 |               NESTED LOOPS                     |                           |      1 |    140 |    311 |00:00:02.84 |    1218 |    853 |      0 |       |       |          |         |
|* 18 |                HASH JOIN                       |                           |      1 |    140 |    311 |00:00:00.83 |     594 |    586 |      0 |   880K|   880K|     1/0/0|         |
|  19 |                 TABLE ACCESS FULL              | DIM_OFFRE                 |      1 |     22 |     22 |00:00:00.02 |       6 |      6 |      0 |       |       |          |         |
|* 20 |                 HASH JOIN                      |                           |      1 |    140 |    311 |00:00:00.81 |     588 |    580 |      0 |   769K|   769K|     1/0/0|         |
|  21 |                  NESTED LOOPS                  |                           |      1 |        |      1 |00:00:00.02 |      11 |     11 |      0 |       |       |          |         |
|  22 |                   NESTED LOOPS                 |                           |      1 |      1 |      1 |00:00:00.02 |      10 |     10 |      0 |       |       |          |         |
|  23 |                    NESTED LOOPS                |                           |      1 |      1 |      1 |00:00:00.02 |       9 |      9 |      0 |       |       |          |         |
|  24 |                     TABLE ACCESS BY INDEX ROWID| DIM_DATE                  |      1 |      1 |      1 |00:00:00.01 |       3 |      3 |      0 |       |       |          |         |
|* 25 |                      INDEX UNIQUE SCAN         | AK_DATE                   |      1 |      1 |      1 |00:00:00.01 |       2 |      2 |      0 |       |       |          |         |
|* 26 |                     TABLE ACCESS FULL          | DIM_CONTRAT               |      1 |      1 |      1 |00:00:00.01 |       6 |      6 |      0 |       |       |          |         |
|* 27 |                    INDEX UNIQUE SCAN           | PK_CONTRACTANT_KEY        |      1 |      1 |      1 |00:00:00.01 |       1 |      1 |      0 |       |       |          |         |
|* 28 |                   TABLE ACCESS BY INDEX ROWID  | DIM_CONTRACTANT           |      1 |      1 |      1 |00:00:00.01 |       1 |      1 |      0 |       |       |          |         |
|  29 |                  TABLE ACCESS FULL             | REL_SERVICE_POINT_CONTRAT |      1 |  55048 |  55048 |00:00:00.48 |     577 |    569 |      0 |       |       |          |         |
|* 30 |                INDEX UNIQUE SCAN               | PK_SP_KEY                 |    311 |      1 |    311 |00:00:02.01 |     624 |    267 |      0 |       |       |          |         |
|  31 |               TABLE ACCESS BY INDEX ROWID      | DIM_SERVICE_POINT         |    311 |      1 |    311 |00:00:02.11 |     311 |    305 |      0 |       |       |          |         |
|  32 |            TABLE ACCESS BY GLOBAL INDEX ROWID  | FAC_DAILY_TRANS_PERFORM   |    311 |      1 |    311 |00:01:34.17 |   25024 |  15383 |      0 |       |       |          |         |
|* 33 |             INDEX RANGE SCAN                   | FAC_DAY_TRAN_PERF_ID      |    311 |      1 |    311 |00:00:44.35 |   14525 |   7680 |      0 |       |       |          |         |
|  34 |           TABLE ACCESS BY INDEX ROWID          | DIM_DIAGNOSYS             |    311 |      1 |      0 |00:00:00.01 |       0 |      0 |      0 |       |       |          |         |
|* 35 |            INDEX UNIQUE SCAN                   | PK_DIAGNOSYS_KEY          |    311 |      1 |      0 |00:00:00.01 |       0 |      0 |      0 |       |       |          |         |
|  36 |         TABLE ACCESS BY INDEX ROWID            | DIM_RADIO_MODULE          |    311 |      1 |    311 |00:00:04.11 |     942 |    622 |      0 |       |       |          |         |
|* 37 |          INDEX UNIQUE SCAN                     | PK_RADMODKEY              |    311 |      1 |    311 |00:00:01.93 |     624 |    304 |      0 |       |       |          |         |
|  38 |        TABLE ACCESS BY INDEX ROWID             | DIM_METER_MODULE          |    311 |      1 |    311 |00:00:04.58 |     935 |    602 |      0 |       |       |          |         |
|* 39 |         INDEX UNIQUE SCAN                      | PK_METMODKEY              |    311 |      1 |    311 |00:00:02.00 |     624 |    301 |      0 |       |       |          |         |
|  40 |       TABLE ACCESS BY INDEX ROWID              | DIM_METER                 |    311 |      1 |    311 |00:00:04.96 |     935 |    613 |      0 |       |       |          |         |
|* 41 |        INDEX UNIQUE SCAN                       | PK_METER                  |    311 |      1 |    311 |00:00:02.42 |     624 |    304 |      0 |       |       |          |         |
|* 42 |      INDEX UNIQUE SCAN                         | PK_CUSTOMER               |    311 |      1 |    311 |00:00:01.99 |     624 |    304 |      0 |       |       |          |         |
|  43 |     TABLE ACCESS BY INDEX ROWID                | DIM_CUSTOMER              |    311 |      1 |    311 |00:00:02.04 |     311 |    311 |      0 |       |       |          |         |
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 
Predicate Information (identified by operation id):
---------------------------------------------------
 
   8 - access("T786"."PERFORMANCE_KEY"="T2158"."PERFORMANCE_KEY")
  12 - access("T160"."FLUIDE_KEY"="T210"."FLUIDE_KEY")
  14 - access("T160"."TYP_PDC_KEY"="T217"."TYP_PDC_KEY")
  18 - access("T122"."OFFRE_KEY"="T298"."OFFRE_KEY")
  20 - access("T24"."CONTRAT_KEY"="T298"."CONTRAT_KEY" AND "T17"."CONTRACTANT_KEY"="T298"."CONTRACTANT_KEY")
  25 - access("T1830"."CAL_DT"=TO_DATE(' 2013-02-09 00:00:00', 'syyyy-mm-dd hh24:mi:ss'))
  26 - filter("T24"."NOM_CONTRAT"='CHAVANOZ')
  27 - access("T17"."CONTRACTANT_KEY"="T24"."CONTRACTANT_KEY")
  28 - filter("T17"."NOM_CONTRACTANT"='ER Rhône Alpes Auvergne')
  30 - access("T160"."SERVICE_POINT_KEY"="T298"."SERVICE_POINT_KEY")
  33 - access("T786"."DATE_KEY"="T1830"."DATE_KEY" AND "T160"."SERVICE_POINT_KEY"="T786"."SERVICE_POINT_KEY")
  35 - access("T786"."DIAGNOSYS_KEY"="T2186"."DIAGNOSYS_KEY")
  37 - access("T786"."RADIO_MODULE_KEY"="T949"."RADIO_MODULE_KEY")
  39 - access("T786"."METER_MODULE_KEY"="T1191"."METER_MODULE_KEY")
  41 - access("T786"."METER_KEY"="T1011"."METER_KEY")
  42 - access("T786"."CUSTOMER_KEY"="T2098"."CUSTOMER_KEY")

Chiwatel wrote:

I use 11g R2 and I'm trying to deal with a request for some time now, but still no luck. Watching my plan to explain, I have a difference between my E-lines and my A. I can't understand why. Almost all my E-lines are equal to 1. All my paintings are statistics updated with as histograms.

A lines gives you the total number of rows that were sent by content (RowSource). E - lines you gives the expected number of rows with content (RowSource) expect to spend on EVERY TIME it is called. This means that you should compare A-lines with begins * E-lines.

In the example you showed, a lot of your miniatures of E-lines are 1 because the operation is a unique index analysis, or access to the table as a result of a unique index analysis.

Concerning
Jonathan Lewis

Tags: Database

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