Improving query which is using IN clause

Hi,
I am currently using a query which has IN (1.2.3....N) clause in where condition.
The table has more than 100000 records in it. I have a set of 20 values which I pass inside this IN clause.
The column which is used for IN clause is indexed.
Can I use anything other than IN clause for this purpose?
What is better way?
Thanks,
Plad

> Can I use anything other than IN clause for this purpose? > What is better way?
Sure you could use something else, but the IN clause would perfectly suit your needs. And the one who has to maintain the code after you are gone, will be glad you used IN, because it is as clear as you can get.
If you are hinting at the fact that the query is too slow, then please read [url http://forums.oracle.com/forums/thread.jspa?threadID=501834&tstart=0]this thread and try to find out how many rows out of the 100K satisfy your IN predicate.
Regards,
Rob.

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null

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Iraj ():
Is there any way to use a prepared statement for a query which incorporates an in clause with unknown number of elements in the list?<HR></BLOCKQUOTE>
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557870 'FAQ BW Query Performance'
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Refer.
http://help.sap.com/saphelp_nw70/helpdata/en/b8/23813b310c4a0ee10000000a114084/content.htm
http://help.sap.com/saphelp_nw70/helpdata/en/60/f0fb411e255f24e10000000a1550b0/frameset.htm
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Note 356732 - Performance Tuning for Queries with Aggregates
Note 166433 - Options for finding aggregates (find optimal aggregates for an InfoCube)
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By implementing BW Statistics Business Content - you need to install, feed data and through ready made reports which for analysis.
http://help.sap.com/saphelp_nw70/helpdata/en/26/4bc0417951d117e10000000a155106/frameset.htm
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https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/1955ba90-0201-0010-d3aa-8b2a4ef6bbb2
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/ce7fb368-0601-0010-64ba-fadc985a1f94
http://help.sap.com/saphelp_nw04/helpdata/en/c1/0dbf65e04311d286d6006008b32e84/frameset.htm
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Databases
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Buffer Pools
Tablespaces etc
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6
Check SE11 > table RSDDAGGRDIR . You can find the last callup in the table.
Generate Report in RSRT
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/cccad390-0201-0010-5093-fd9ec8157802
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/4c0ab590-0201-0010-bd9a-8332d8b4f09c
Business Intelligence Journal Improving Query Performance in Data Warehouses
http://www.tdwi.org/Publications/BIJournal/display.aspx?ID=7891
Achieving BI Query Performance Building Business Intelligence
http://www.dmreview.com/issues/20051001/1038109-1.html
Assign points if useful
Cheers
SM

How to get the query result of improvement (Before and After ) using sql de

how to get the query result of improvement (Before and After ) using sql developer.

Check
http://www.oracle.com/technetwork/articles/sql/exploring-sql-developer-1637307.html

Bex Query which uses Dynamic columns to display actuals

Hi Bex experts,
I have a query issue/question.
I currently have a Bex query which shows me the the planned values for each period, spanning 6 years into the future. My Key figure columns are defined as follows:
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I want to now include is:
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Thanks, and maximum points will be alotted.

The way I have approached this you may not like as it involves quite a bit of coding
12 CKFs
each CKF adds up 2 RKFs
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example Column 6 CKF
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else put 0 into "Period variable column 6 Actual"
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is a cmod variable which reads the entered date
if the period of entered date is LE 6
then return period 0 into "Period variable column 6 Plan"
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Query using where clause

I am not able to run a SQL query using where clause.
the query is as follows:
I extract the text input by the user in a text field say 'a' and
store it in string 'y'.
String y= a.getText();
//running the query
Select A from B where B.x=y;
how do we run a where clause when y is a string variable instead of value?

Use the following :
String y = a.getText();
String query ="select A.CODE from Port A where A.NAME=" + "'" + y + "'" ;
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Performance hit using "where" clause in the query

Hi All,
I am facing a huge performance hit in the java code when using "where" clause in queries. Following are the details:
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Business Logic Time is huge in second case as compared to first one (ratio - 1:20).
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Since you're mentioning clustering your index, I'll assume you are using Oracle. Knowing what database you are using makes it a lot easier to suggest things.
Since you are using Oracle, you can get the database to tell you what execution plan it is using for each of the 2 SQL statements, and figure out why they have similar times (if they do).
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Second, you may need your DBA to enable autotracing, if it's not already:
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http://www.samoratech.com/tips/swenableautotrace.htm
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For example:
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COUNT(*)
        11
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Plan hash value: 2983758974
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since sql*plus is not a JDBC thing...
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Hi guys:
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Hi
You can use transaction code ST03N.
1. Go to tx code - ST03N
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4. At the bottom left you get "Analysis Views"
5. Select & expand "User and Settlement Statistics"
6. Double click on "User Profile"
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[reward with points if the answer is useful]

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I can use (in clause) with on column like this:
Select code from table where code in(1,2,3)
-------------------------------My case:-------------------------------------------------
I’ve 4 columns PK of table as below
I need to :
select
where (code, month, year) in ((1,1,2013) and (2,1,2014) and (2,2,2015))
i can't write it this way :
select where code in (1,2) and month in (1,2) and year in (2013,2014,2015)
case i'll get my rows but others included like (1,1,2015) , (1,1,2014),(2,1,2013) .. etc
I’m terribly want to solve this problem
Please help me
Code (pk)
Month (pk)
Year (pk)
emp_code(pk)
1
1
2013
101
1
1
2013
102
2
1
2013
101
2
1
2013
102
1
2
2013
101
1
2
2013
102
2
2
2013
101
2
2
2013
102
1
1
2014
101
1
1
2014
102
2
1
2014
101
2
1
2014
102
1
2
2014
101
1
2
2014
102
2
2
2014
101
2
2
2014
102
1
1
2015
101
1
1
2015
102
2
1
2015
101
2
1
2015
102
1
2
2015
101
1
2
2015
102
2
2
2015
101
2
2
2015
102
thank you

In T-SQL you have to use OR-ed predicates.
In full ANSI Standard SQL youcan write row comparisons (a,b,c) = (1,2,3) etc! but not in T-SQL dialect. Ignoring that problem, what you have is a design flaw called attribute splitting; you have put one unit of measurement
in two columns.
I like the MySQL convention of using double zeroes for months and years, That is 'yyyy-mm-00' for a month within a year and 'yyyy-00-00' for the whole year. The advantages are that it will sort with the
ISO-8601 data format required by Standard SQL and it is language independent. The pattern for validation is '[12][0-9][0-9][0-9]-00-00' and '[12][0-9][0-9][0-9]-[01][0-9]-00'
--CELKO-- Books in Celko Series for Morgan-Kaufmann Publishing: Analytics and OLAP in SQL / Data and Databases: Concepts in Practice Data / Measurements and Standards in SQL SQL for Smarties / SQL Programming Style / SQL Puzzles and Answers / Thinking
in Sets / Trees and Hierarchies in SQL

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So I am trying to use the With Clause in order to club all those four Select Statements.
I would appreciate if anybody can help me to construct the Sql Block using With Clause.
My DB version is..
Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - 64bit Production
PL/SQL Release 11.1.0.7.0 - Production
Four Diff cursors are defined below.
CURSOR all_iss (
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           , ISSUE iss
      WHERE isb.issue_id = iss.issue_id
       AND iss.issue_status_id = 50738
       AND ewo_no IN
      (SELECT TO_CHAR(wo_no)
        FROM MGO_PLANT_AUDIT
       WHERE dml_status = 'U' OR dml_status = 'I')
      UNION ALL
      SELECT isb.*
       FROM IMPLMN_STEP_BREKPN isb
        , ISSUE iss
       WHERE isb.issue_id = iss.issue_id
       AND iss.issue_status_id = 50738
       AND CAST (isb.last_updt_timstm AS TIMESTAMP) >=
                                                              b_batch_end_date;
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      p_issue_id IN IMPLMN_STEP_BREKPN.issue_id%TYPE ,
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      p_plnt_code IN IMPLMN_STEP_BREKPN.PLT_FACLTY_ID%TYPE)
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      WHERE issue_id = p_issue_id
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      AND
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Not tested. Some thing like below. i just made the queries as tables and given name as a,b,c and substituted columns for the parameters used in the 2nd cursor and third cursor. Try like this.
CURSOR all_iss (
b_batch_end_date IN TIMESTAMP,
IS
select a.*,b.*,c.* from
( SELECT isb.*
FROM IMPLMN_STEP_BREKPN isb
, ISSUE iss
WHERE isb.issue_id = iss.issue_id
AND iss.issue_status_id = 50738
AND ewo_no IN
(SELECT TO_CHAR(wo_no)
FROM MGO_PLANT_AUDIT
WHERE dml_status = 'U' OR dml_status = 'I')
UNION ALL
SELECT isb.*
FROM IMPLMN_STEP_BREKPN isb
, ISSUE iss
WHERE isb.issue_id = iss.issue_id
AND iss.issue_status_id = 50738
AND CAST (isb.last_updt_timstm AS TIMESTAMP) >=
b_batch_end_date) a,
( SELECT DISTINCT wo_no ,
plant_code
FROM MGO_PLANT
WHERE TO_CHAR(wo_no) = p_ewo_no) b,
( SELECT *
FROM IMPLMN_STEP_BREKPN
WHERE issue_id = p_issue_id
AND ewo_no = p_ewo_no
plt_faclty_id IS NULL) c
where b.wo_no = c.ewo_no and
c.issue_id = a.issue_id ;
vinodh
Edited by: Vinodh2 on Jul 11, 2010 12:03 PM

Problem in sql query because of order by clause

Hi All,
I am facing a one problem in my one sql query.I am using Oracle 10gR2.
Query is given below:
SELECT t1.ename
        FROM T1, T2
       WHERE T1.EMPNO = 1234
         AND T1.ACCOUNTNO = T2.ACCOUNTNO
         AND T1.SEQ = T2.SEQ
       ORDER BY T2.SEQThe Plan of the query is :
| Id | Operation                     | Name                 | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT              |                      |     2 |   218 | 11716   (1)| 00:00:41 |
|* 1 | TABLE ACCESS BY INDEX ROWID | T1                   |     1 |    89 |     1   (0)| 00:00:01 |
|   2 |   NESTED LOOPS                |                      |     2 |   218 | 11716   (1)| 00:00:41 |
|* 3 |    TABLE ACCESS BY INDEX ROWID| T2                   |     2 |    40 | 11715   (1)| 00:00:41 |
|   4 |     INDEX FULL SCAN           | PK_T2_SEQ            | 58752 |       |   122   (5)| 00:00:01 |
|* 5 |    INDEX RANGE SCAN           | FK_ACCOUNTNO         |     3 |       |     0   (0)| 00:00:01 |
----------------------------------------------------------------------------------------------------Now i want to reduce the time of this query.
If i am removing Order by clause from query than performance of the query is totally perfect but with order by clause its taking a time.
I have already set SORT_AREA_SIZE but still nothing is improving.
Welcome and thanks for your suggestions.
Thanks,
Edited by: BluShadow on 23-Jun-2011 07:55
added {noformat}{noformat} tags and formatted explain plan to make it readable. Please see {message:id=9360002} for details on how to post code and data

Hi,
There are a couple of things I do not understand.
1. Why don't you put {noformat}{noformat} around your code, it makes it so much easier to read, especially your explain plan
2. You claim that the ORDER BY is problematic compared to no order by. Then why do you choose to post only one plan?
3. It is hard to understand how your tables relate, and which indexes you have and which you don't.
- PK_T2_SEQ, does this mean that SEQ alone is primary key of T2?
- If SEQ is primary key of T2, why do you join on accountno, seq and not just seq?
- If SEQ is primary key of T2 one of the tables is denormalized.
4. FK_ACCOUNTNO, is this an index on accountno, alone?
- Or is this AccountNo, Seq?
5. Is there no index on T1.EMPNO?
Above could of course just be a case of my not understanding the names of your indexes.
So, here are my guesses:
Above plan is for the ORDER BY query. That means the optimizer, has chosen to full scan PK_T2_SEQ, since data is then read according to the ORDER BY.
(This could be a bad choice)I
You could try and order by t1.seq, instead. Result should be the same.
Regards
Peter

Improving query which is using IN clause

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