Select query on QALS table taking around 4 secs to fetch one record

Hi,
I have one select query that takes around 4 secs to fetch one record. I would like to know if there are any ways to reduce the time taken for this select.
SELECT
     b~prueflos
     b~matnr
     b~lagortchrg
     a~vdatum
     a~kzart
     a~zaehler
     a~vcode
     a~vezeiterf
     FROM qals AS b LEFT OUTER JOIN qave AS a ON
     bprueflos = aprueflos
     INTO TABLE t_qals1
     FOR ALL ENTRIES IN t_lgorts
      WHERE matnr = t_lgorts-matnr
      AND    werk = t_lgorts-werks
      AND    lagortchrg = t_lgorts-lgort
      AND    stat35 = c_x
      AND    art IN (c_01,c_08).
When I took the SQL trace, here I found other details :
Column          No.Of Distinct Records
MANDANT                                      2
MATNR                                      2.954
WERK                                          30
STAT34                                         2
HERKUNFT                                   5
Analyze Method                    Sample 114.654 Rows
Levels of B-Tree                                 2
Number of leaf blocks                         1.126
Number of distinct keys                      16.224
Average leaf blocks per key                1
Average data blocks per key               3
Clustering factor                                  61.610
Also note, This select query is using INDEX RANGE SCAN QALS~D.
All the suggestions are welcome
Regards,
Vijaya

Hi Rob,
Its strange but, the table t_lgorts has only ONE record
MATNR = 000000000500003463
WERK = D133
LAGORTCHRG = 0001
I have also seen that for the above criteria the table QALS has 2266 records that satisfy this condition.
I am not sure..but if we write the above query as subquery instead of Outer join..will it improve the performance?
Will check it from my side too..
Regards,
Vijaya

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What db is this?
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[mysqld]
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Select AddressLine1, City
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Below method will need table to be created prior to inserting data. Its really useful when table is already created and you want insert data from
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Hi,
I have created a query in oracle which joins 5 tables and uses two functions(function names are 'ca_concat' and 'ca_concat_noseq').
Query takes approximately 40 secs to execute around 12000 records. If I remove the functions from query it excutes within a second..
Note : I have used the oracle SQL Developer for testing the query.
It would be appriciated if anybody helps me to improve the perfomance of the query.
Below are the querie with and without functions:
1. Query with functions:
select
imsAuditEvent12.id as ID,
imsAuditEvent12.audit_time as AUDIT_TIME,
imsAuditEvent12.admin_dn as ADMIN_DN,
imsAuditEvent12.admin_name as ADMIN_NAME,
imsAuditEvent12.event_name as EVENT_NAME,
imsAuditEvent12.event_description as EVENT_DESCRIPTION,
imsAuditEvent12.event_state as EVENT_STATE,
imsAuditEvent12.envname as ENVNAME,
imsAuditTaskSession12.task_name as TASK_NAME,
imsAuditTaskSession12.id as TASK_ID,
imsAuditTaskSession12.task_description as TASK_DESCRIPTION,
imsAuditTaskSession12.task_priority as TASK_PRIORITY,
S1.OBJECT_ID,
S1.OBJECT_NAME as OBJECT_NAME,
S1.OBJECT_TYPE as OBJECT_TYPE,
S2.ATTRIBUTE_NAME as ATTRIBUTE_NAME,
S2.ATTRIBUTE_OLDVALUES as ATTRIBUTE_OLDVALUES,
S2.ATTRIBUTE_NEWVALUES as ATTRIBUTE_NEWVALUES,
S3.OBJECT_DN as OBJECT_DN,
S3.OBJECT_TYPE as IMSOBJECT_TYPE,
S3.CONTAINER_NAME as CONTAINER_NAME,
S3.CONTAINER_DN as CONTAINER_DN,
S3.CONTAINER_TYPE as CONTAINER_TYPE
from
imsAuditEvent12 LEFT JOIN imsAuditTaskSession12 ON imsAuditTaskSession12.id=imsAuditEvent12.tasksession_id LEFT JOIN
(select parent_event_id,
ca_concat('imsAuditEventObject12.parent_event_id',parent_event_id,'imsAuditEventObject12.object_name','imsAuditEventObject12') as OBJECT_NAME,
ca_concat('imsAuditEventObject12.parent_event_id',parent_event_id,'imsAuditEventObject12.object_type','imsAuditEventObject12') as OBJECT_TYPE,
ca_concat_noseq('imsAuditEventObject12.parent_event_id',parent_event_id,'imsAuditEventObject12.ID','imsAuditEventObject12') as OBJECT_ID
from
imsAuditEventObject12 group by parent_event_id) S1
ON imsAuditEvent12.id = S1.parent_event_id LEFT JOIN
(select
parent_object_id,
ca_concat('parent_object_id',parent_object_id,'attribute_name','imsauditobjectattributes12') as ATTRIBUTE_NAME,
ca_concat('parent_object_id',parent_object_id,'attribute_oldvalue','imsauditobjectattributes12') as ATTRIBUTE_OLDVALUES ,
ca_concat('parent_object_id',parent_object_id,'attribute_newvalue','imsauditobjectattributes12') as ATTRIBUTE_NEWVALUES
from
imsauditobjectattributes12 group by parent_object_id) S2
ON S1.OBJECT_ID = S2.parent_object_id LEFT JOIN
(select
parent_event_id,
ca_concat('parent_event_id',parent_event_id,'OBJECT_DN','imsauditobjectrelationship12') as OBJECT_DN,
ca_concat('parent_event_id',parent_event_id,'OBJECT_TYPE','imsauditobjectrelationship12') as OBJECT_TYPE ,
ca_concat('parent_event_id',parent_event_id,'CONTAINER_NAME','imsauditobjectrelationship12') as CONTAINER_NAME,
ca_concat('parent_event_id',parent_event_id,'CONTAINER_DN','imsauditobjectrelationship12') as CONTAINER_DN,
ca_concat('parent_event_id',parent_event_id,'CONTAINER_TYPE','imsauditobjectrelationship12') as CONTAINER_TYPE
from
imsauditobjectrelationship12 group by parent_event_id) S3
ON imsAuditEvent12.id =S3.parent_event_id where imsauditevent12.id > 0 and imsauditevent12.id <12000 order by imsauditevent12.id ASC;
2. Query without using functions:
select * from imsauditeventobject12 left join imsauditevent12 on imsauditeventobject12.id=imsauditevent12.id left join imsauditobjectattributes12 on imsauditeventobject12.id=imsauditobjectattributes12.parent_object_id left join imsaudittasksession12 on imsauditevent12.tasksession_id=imsaudittasksession12.id left join imsAuditObjectRelationship12 on imsAuditEvent12.id =imsAuditObjectRelationship12.parent_event_id where imsauditevent12.id >0 and imsauditevent12.id < 12000 order by imsauditevent12.id asc;
Thanks,
Badri

Hi,
Please find the below more information about the query.
DB version: Oracle 11g Enterprise Edition Release 11.2.0.1.0
Below are source of the functions:
create or replace function ca_concat( ca_key_name in varchar2,
                       ca_key_val in varchar2,
                       ca_other_col_name in varchar2,
                       ca_tname     in varchar2 )
   return varchar2
      as
       type rc is ref cursor;
       l_str    varchar2(32000);
       l_sep    varchar2(1);
       l_val    varchar2(32000);
       l_count   number(6);
       l_cur    rc;
   begin
   l_count :=1;
   l_str := '';
       open l_cur for 'select '|| ca_other_col_name ||'
                         from '|| ca_tname || '
                        where ' || ca_key_name || ' = '
                   using ca_key_val;
       loop
           fetch l_cur into l_val;
           l_val := SUBSTR(l_val,0,102);
           exit when (l_cur%notfound or l_count > 38);
           l_str := l_str || l_sep || l_count || '.' || l_val;
           l_sep := ',';
       l_count := l_count + 1;
       end loop;
       close l_cur;
       return l_str;
   end;
create or replace function ca_concat_noseq( ca_key_name in varchar2,
                       ca_key_val in varchar2,
                       ca_other_col_name in varchar2,
                       ca_tname     in varchar2 )
   return varchar2
      as
       type rc is ref cursor;
       l_str    nvarchar2(32000);
       l_sep    varchar2(1);
       l_val    varchar2(32000);
       l_count   number(6);
       l_cur    rc;
   begin
   l_count :=1;
       open l_cur for 'select '||ca_other_col_name||'
                         from '|| ca_tname || '
                        where ' || ca_key_name || ' = '
                   using ca_key_val;
       loop
           fetch l_cur into l_val;
           exit when (l_cur%notfound or length(l_val)>3000 or l_count>1);
           l_str := l_str || l_sep || l_val ;
           l_sep := ',';
       l_count := l_count + 1;
       end loop;
       close l_cur;
       return l_str;
end;
Below are the tables structures:
DESC imsauditevent12;
Name                           Null     Type
ID                             NOT NULL NUMBER
TASKSESSION_ID                 NOT NULL NUMBER
TASKSESSION_OID                         VARCHAR2(100)
PARENT_EVENT_OID                        VARCHAR2(100)
AUDIT_TIME                     NOT NULL TIMESTAMP(6)
EVENT_OID                      NOT NULL VARCHAR2(100)
ADMIN_DN                       NOT NULL VARCHAR2(512)
ADMIN_NAME                              VARCHAR2(255)
EVENT_NAME                     NOT NULL VARCHAR2(255)
EVENT_DESCRIPTION                       VARCHAR2(4000)
EVENT_STATE                             VARCHAR2(100)
ENVNAME                        NOT NULL VARCHAR2(100)
ENV_OID                        NOT NULL VARCHAR2(100)
DESC imsauditeventobject12;
Name                           Null     Type
ID                             NOT NULL NUMBER
PARENT_EVENT_ID                NOT NULL NUMBER
AUDIT_TIME                     NOT NULL TIMESTAMP(6)
OBJECT_TYPE                    NOT NULL VARCHAR2(100)
OBJECT_NAME                             VARCHAR2(255)
DESC imsauditobjectattributes12;
Name                           Null     Type
ID                             NOT NULL NUMBER
PARENT_OBJECT_ID               NOT NULL NUMBER
AUDIT_TIME                     NOT NULL TIMESTAMP(6)
DISPLAY_NAME                            VARCHAR2(255)
ATTRIBUTE_NAME                 NOT NULL VARCHAR2(255)
ATTRIBUTE_OLDVALUE                      VARCHAR2(4000)
ATTRIBUTE_NEWVALUE                      VARCHAR2(4000)
DESC imsaudittasksession12;
Name                           Null     Type
ID                             NOT NULL NUMBER
PARENT_TS_OID                           VARCHAR2(100)
PARENT_EVENT_OID                        VARCHAR2(100)
AUDIT_TIME                     NOT NULL TIMESTAMP(6)
TASKSESSION_OID                NOT NULL VARCHAR2(100)
ADMIN_DN                       NOT NULL VARCHAR2(512)
ADMIN_NAME                              VARCHAR2(255)
TASK_NAME                               VARCHAR2(255)
TASK_TAG                       NOT NULL VARCHAR2(255)
TASK_DESCRIPTION                        VARCHAR2(4000)
TASK_PRIORITY                           NUMBER
STATE                          NOT NULL VARCHAR2(100)
ENVNAME                        NOT NULL VARCHAR2(100)
ENV_OID                        NOT NULL VARCHAR2(100)
DESC imsAuditObjectRelationship12;
Name                           Null     Type
ID                             NOT NULL NUMBER
PARENT_EVENT_ID                NOT NULL NUMBER
AUDIT_TIME                     NOT NULL TIMESTAMP(6)
OBJECT_TYPE                    NOT NULL VARCHAR2(100)
OBJECT_DN                      NOT NULL VARCHAR2(512)
CONTAINER_TYPE                 NOT NULL VARCHAR2(100)
OBJECT_NAME                    NOT NULL VARCHAR2(255)
CONTAINER_NAME                 NOT NULL VARCHAR2(255)
CONTAINER_DN                   NOT NULL VARCHAR2(512)
OPERATION                      NOT NULL VARCHAR2(50)
Thanks,
Badri

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OPtimizing Performance for Select query on huge table

Hi All,
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Rob
Message was edited by:
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Short text
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CONCATENATE g_condition '-' keyfield INTO g_condition.
SELECT * FROM (wa_all_tables-name) INTO CORRESPONDING FIELDS OF TABLE <dyn_table1>
FOR ALL ENTRIES IN <dyn_table>
WHERE (g_condition).

ST05 Trace on a select query on BSEG table

hi all,
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         buzei
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         mwskz
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         ebeln
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               FOR ALL ENTRIES IN i_ad_tab
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                    gjahr EQ i_ad_tab-gjahr.
when i m doing SQL trace ST05 on this query and in the detail statement showed the following query
SELECT
"MANDT" , "BUKRS" , "BELNR" , "GJAHR" , "PAGENO" , "TIMESTMP" ,
"PAGELG" , "VARDATA"
FROM
"RFBLG"
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"MANDT" = ? AND "BUKRS" = ? AND "BELNR" = ? AND "GJAHR" = ?
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what is RFBLG?also, the above select query giving me performance issues.. the "for all entries" clause is used as per norms...
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hi
good
The famous BSEG table is a cluster table.
It is as was correctly stated part of the Accounting Document Segment. It is part of the Pool cluster RFBLG and lives in the package: FBAS (Financial accounting 'Basis').
You can't read a cluster table exactly the way you read a database (old speak, transparent table).
You can use a program to read called RFPPWF05
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Other possiblity: Other possibility: CALL DIALOG 'RF_ZEILEN_ANZEIGE', but since this is a dialog I don't think this would work.
In any event go to FBAS Package (development class) to see your business objects, class library and functions.
you must use keyfields bukrs , belnr, gjahr
(so 1st select table bkpf) to select bseg.
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bsas, bsis, bsik, bsak, bsid, bsad
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Can i retrieve a table name from a select query if i know value of one of the columns in the table?
Glen

Can't you take a look at the source code and see what table those values are coming from? That's likely the easiest solution.
Barring that, you could use dynamic SQL, but it's going to be awfully inefficient. Something like
FOR x IN (SELECT * FROM user_tab_cols WHERE data_type = 'VARCHAR2')
LOOP
EXECUTE IMMEDIATE
    'SELECT COUNT(*) FROM ' || x.table_name ||
    ' WHERE ' || x.column_name || ' = <<literal value>>'
    INTO l_cnt;
IF( l_cnt > 1 )
THEN
    DBMS_OUTPUT.PUT_LINE( 'Found the value' );
END IF;
END LOOP;This assumes that you know at least what data type the value is stored in. It's also going to generate a tremendous number of full table scans, so it'll be slow as molasses on a system of any size.
Justin

Select Query Using Two Tables

Friends,
   I need to select some fields from two different tables which doesnot contain any field in common.How to Get this using a select query..
   But there is a field X in table 1 which is equalient to eight char of another field y in table 2.I tried using offset but it is giving error.
Thanks in Advance
Regards
Yamini

Hello,
You can use a subquery
SELECT * FROM SFLIGHT AS F INTO WA_SFLIGHT
    WHERE SEATSOCC < F~SEATSMAX
      AND EXISTS ( SELECT * FROM SPFLI
                    WHERE CARRID = F~CARRID
                       AND CONNID = F~CONNID
                       AND CITYFROM = 'FRANKFURT'
                       AND CITYTO = 'NEW YORK' )
      AND FLDATE BETWEEN '19990101' AND '19990331'.
WRITE: / WA_SFLIGHT-CARRID, WA_SFLIGHT-CONNID,
           WA_SFLIGHT-FLDATE.
ENDSELECT.
or simply query the first table and then the second table with select endselect.
select * from table a.
   select * from table b into output_table
                 where b-field1 eq a-field2.
endselect.
or read the data into one internal table loop at it and then query the other table.
Regards,
Shekhar Kulkarni

Select query on QALS table taking around 4 secs to fetch one record

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