SQL Query record coount before firing

Hi All
Let me know if there is any way to find the record count before firing the sql statemtent. I have tried using explain plan, but it gives the estimated rows returned by the query. I need to find the count before firing the query and will decide whether to fire my query or not.

Let me know if there is any way to find the record
count before firing the sql statemtent. No there isn't.

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Executing PL-SQL Query before running a Report

Hi Guys,
Can i use a Run a Pl-Sql Query every time before executing a report. Like if i am opening a report then the pl-sql Query should run before it.
Thanks
Rondo.

Try with Evaluate as one of the column's expression.. so that we can limit to specific report..
or
Use Connection Pool->Connection Pool Scripts tab->use 'Execute before query'
Since we can set the repository variables using advanced tab.. the same variable we may validate using Connection pool scripts tab.
This might be more dev work..
Edited by: Srini VEERAVALLI on Dec 17, 2012 9:00 PM

SQL Query Performance needed.

Hi All,
   I am getting performance issue with my below sql query. When I fired it, It is taking 823.438 seconds, but when I ran query in, it is taking 8.578 seconds, and query after in   is taking 7.579 seconds.
SELECT BAL.L_ID, BAL.L_TYPE, BAL.L_NAME, BAL.NATURAL_ACCOUNT,
BAL.LOCATION, BAL.PRODUCT, BAL.INTERCOMPANY, BAL.FUTURE1, BAL.FUTURE2, BAL.CURRENCY, BAL.AMOUNT_PTD, BAL.AMOUNT_YTD, BAL.CREATION_DATE,
BAL.CREATED_BY, BAL.LAST_UPDATE_DATE, BAL.LAST_UPDATED_BY, BAL.STATUS, BAL.ANET_STATUS, BAL.COG_STATUS, BAL.comb_id, BAL.MESSAGE,
SEG.SEGMENT_DESCRIPTION FROM ACC_SEGMENTS_V_TST SEG , ACC_BALANCE_STG BAL where BAL.NATURAL_ACCOUNT = SEG.SEGMENT_VALUE AND SEG.SEGMENT_COLUMN = 'SEGMENT99' AND BAL.ACCOUNTING_PERIOD = 'MAY-10' and BAL.comb_id
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(select distinct(comb_id),LAST_UPDATE_DATE from ACC_BALANCE_STG where accounting_period='MAY-10' order by LAST_UPDATE_DATE )
     where rownum <=100) where r >0)
Please help me in fine tuning above. I am using Oracle 10g database. There are total of 8000 records. Let me know if any other info required.
Thanks in advance.

In recent versions of Oracle an EXISTS predicate should produce the same execution plan as the corresponding IN clause.
Follow the advice in the tuning threads as suggested by SomeoneElse.
It looks to me like you could avoid the double pass on ACC_BALANCE_STG by using an analytical function like ROW_NUMBER() and then joining to ACC_SEGMENTS_V_TST SEG, maybe using subquery refactoring to make it look nicer.
e.g. something like (untested)
WITH subq_bal as
    ((SELECT *
      FROM (SELECT BAL.L_ID, BAL.L_TYPE, BAL.L_NAME, BAL.NATURAL_ACCOUNT,
             BAL.LOCATION, BAL.PRODUCT, BAL.INTERCOMPANY, BAL.FUTURE1, BAL.FUTURE2,
             BAL.CURRENCY, BAL.AMOUNT_PTD, BAL.AMOUNT_YTD, BAL.CREATION_DATE,
             BAL.CREATED_BY, BAL.LAST_UPDATE_DATE, BAL.LAST_UPDATED_BY, BAL.STATUS, BAL.ANET_STATUS,
             BAL.COG_STATUS, BAL.comb_id, BAL.MESSAGE,
             ROW_NUMBER() OVER (ORDER BY LAST_UPDATE_DATE) rn
             FROM   acc_balance_stg
             WHERE accounting_period='MAY-10')
      WHERE rn <= 100)
SELECT *
FROM   subq_bal bal
,      acc_Segments_v_tst seg
where BAL.NATURAL_ACCOUNT = SEG.SEGMENT_VALUE
AND    SEG.SEGMENT_COLUMN = 'SEGMENT99';However, the parentheses you use around comb_id make me question what your intention is here in the subquery?
Do you have multiple rows in ACC_BALANCE_STG for the same comb_id and last_update_date?
If so you may want to do a MAX on last_update_date, group by comb_id before doing the analytic restriction.
Edited by: DomBrooks on Jun 16, 2010 5:56 PM

Default value of date picker not showing in sql query

Hi,
I have a tabular form page with a query similar to the following:
select emp_name, salary from emp_table where trunc(hire_date)=trunc(to_date(:P42_START_DATE))
where P42_START_DATE is the name of a date picker item.
I set the source type of the date picker to be "Only when current value in session state is null" and the value to be "select trunc(next_day(sysdate,'MON')-7) from dual;" - basically the monday of the current week. I set the sequence of the date picker to be 5, and the sequence of the region to be 10. Now, when I open this page, no data gets pulled. I checked the page source, and the value of the date picker input is being set to "17-NOV-2008", but it somehow isn't reflected in the sql query.
Data does get retrieved if I manually set the date in the date picker, but I'd like it to default to the monday of the current week. What am I doing wrong?
Thanks

nope, still same problem.
I used javascript alerts to help debug, and here might be some useful information.
The computation to set the value of :P42_START_DATE is set to run "before header", but when I put this following javascript in the header:
<script language="javascript">
var c = $v('P42_START_DATE');
alert(c);
</script>
the alert box is blank (ie :P42_START_DATE is empty). Putting the same exact script in the footer gives 24-Nov-2008 in the alert box. Now, the SQL query is run sometime after the first alert and before the second alert, I believe. Why would the value of :P42_START_DATE not be getting set at the correct time?
P42_START_DATE is a date picker item that belongs to the region SCHEDULE (which is where the sql query is). I set the sequence of the region to 10, and the sequence of the date picker and computation to be 5 and 6. Even so, does this mean that the sql query is executing before the call to the computation, because the region needs to be created before any items can be created that belong to the region?

SQL query execution in DB02 hangs if record set is more than 50000

Hi,
We are facing issue in a report performance. The return is using native SQL query.
There are custom views created ar database level for pricing/maetrial and stock. The native sql query is written on these views. The report takes around 15 mins to run in background .
We are trying to analyse the native SQL query through DB02. I tried fetching records for one particular
custom view to make out if its indexing issue or something else.When i using TOP 35000 records with select query runs fine with this dataset or less than this . If i increase it to 40000 system doesn;t show anything in SQL ouptut. And above one lakh records system gives timeout.
The count in this view gives some 10 lakh records which I don't feel is v.v.huge that query that too native sql takes so much time.
Any help on this will be highly appreciated.
Regards
Madhu

what do you expect from that poor information.
do you change data or onyl select.
If you use SAP and ABAP, then you should also use Open SQL.
Otherwise it is possible to run the SQL Trace with Native SQL, it is anyway only Native SQL, what the trace sees.
Use package size and it will probably work fine.
Siegfried

On Submit process not firing -report (PL/SQL function returning SQL query)

Can anyone suggest possible causes / solutions for the following problem?
I have a report region that uses a PL/SQL function returning SQL query. The report allows the user to update multiple fields / rows and then click a button to submit the page which should run the On-Submit process to update the database. However the process does not run and I get a 'HTTP404 page cannot be found' error; and when I navigate back using the Back button I cannot then navigate to any other page in my application without getting the same error. The button was created by a wizard selecting the options to submit the page and redirect to a (same) page. The button does not actually have a redirect in its definition but the wizard created a branch to the same page which should work and the button has the text 'submit as SUBMIT' next to it so it appears to be set up correctly.
I have recreated this page several times in my application and I cannot get the On-Submit process to run. However I have created a cut down version of the same page in the sample application on apex.oracle.com at http://apex.oracle.com/pls/otn/f?p=4550:1:179951678764332 and this works perfectly so I am at a loss to understand why it does not work in my application. I cannot post any part of the application itself but if anybody would like to check out page 30 of the sample application (Customer Update Test tab) updating the surnames only, using credentials ja, demo, demo this is pretty much what I have got in my application.
Any ideas would be much appreciated?

Thanks for the suggestions guys. I have now identified that the problem goes away when I remove the second table from my report query. The original report query retrieved data from two tables and the process was updating only one of the tables. I thought I had approached the task logically i.e. first get the report to display the records from the two tables, then get the process to update the first table and finally to modify the process further to update the second table.
Can anyone point me to an example of multiple row updates on multiple tables using a PL/SQL function returning an SQL query?

Sql query to retrieve records in parent sibling relationship in a table

I need help to write this Sql query on a table where it has the primary_id, parent_id, and sibling_id. A new row can be created with or without the parent_id and sibling_id. However most of the new rows are created from an existing row and the primary_id
of the existing row is inserted to the parent_id of the new row. This can go on for many many rows such as (B's parent_id has A primary_id, A's sibling_id has B primary_id), (C's parent_id has B primary_id, B's sibling_id has C primary_id), (D's
parent_id has C primary_id, C's sibling_id has D primary_id), What I want is when user pass on a primary_id on a row, the query will give me back all the related parent_id or sibling_id records. For example User pass the A's primary_id the query will
give me back the Row B and Row C as a sibling rows or user pass the C's primary_id the query should give me back row B and Row A as parent rows. Thanks
Kahlua

Check http://social.technet.microsoft.com/wiki/contents/articles/21062.t-sql-hierarchical-table-sorting-with-a-parent-child-relation.aspx
For every expert, there is an equal and opposite expert. - Becker's Law
My blog
My TechNet articles

Sql query to Load only new records,or update old records

Hi,
I need a query (not stored procedure) to insert only new records otherwise update existing records.
I tried by creating "Merge statement in SQl", but the sql query is wrong,it is not updating,always inserting records(replicating..1,2,4,8,16,32..).
below is my sample query,
Here "FACT_mytbl -FCT" is my fact table.(which need to update if already records found ,otherwise insert as new records).
*Inside select ---the table   E_tbl1,E_tbl2 is the business logic table ,using this two table only ,"FACT_mytbl" was created .So the "S" alias will be the source
table and "FCT" will be target table. based on this we have to insert or update records.
---Query starts-------------------------------------
MERGE INTO [FACT_mytbl] FCT
USING (
SELECT
FCT1.ID
,FCT1.PKcol1
,FCT1.FKcol1
,FCT1.col1
,FCT1.col2
, FCT1.col3
FROM [FACT_mytbl] FCT1 WITH(NOLOCK)
LEFT JOIN dbo.E_tbl1 CT WITH(NOLOCK)
ON CT.PKcol1=FCT1.PKcol1
LEFT JOIN dbo.E_tbl2 CT1 WITH(NOLOCK)
ON CT1.PKcol1=FCT1.PKcol1
) S
ON FCT.PKcol1 = S.PKcol1
WHEN MATCHED AND (FCT.PKcol1 ! = S.PKcol1 ) THEN
UPDATE SET
FCT.col1
,FCT.col2
,FCT.col3
WHEN NOT MATCHED THEN
INSERT VALUES
S.ID
,S.PKcol1
,S.FKcol1
,S.col1
,S.col2
, S.col3
--query ends----------------
any suggestions,
Thanks,
R.B

Hi Bhupesh_Rajasekaran,
According to your description, if you want to insert only new records which does not exist in destination and update existing records which does exist in destination. We usually accomplish these in two statement.
1.A join statement to update records.
2.A insert statement for new records.
Also we can use MERGE in SQL Server to insert, update at the same time. You specify a "Source" record set and a "Target" table, and the join between the two. You then specify the type of data modification that is to occur when the records between the two
data are matched or are not matched. For more information, there is an similar example about merge in SQL Server, you can review the following article.
http://www.codeproject.com/Tips/590085/Merge-in-SQL-Server
Regards,
Sofiya Li
Sofiya Li
TechNet Community Support

Sql query to update record?

hi1
i have 1000 rows in my table that are not unique. i have added a new column named sno.initially that contains null values. Now i want to update the table with sno contains serial no. from 1 to 1000 in a single SQL query
please help
Thanks
Harinder

hi1
i have 1000 rows in my table that are not unique. i
have added a new column named sno.initially that
contains null values. Now i want to update the table
with sno contains serial no. from 1 to 1000 in a
single SQL query
please help
Thanks
HarinderIt will work..
Update <table_name> set <column_name> = ROWNUM
whether the records are duplicate or not...

SQL query to populate the records, the maximum processed should be less than 10 records per week.

Dear All,
I have a requirement, to write a SQL query to populate the records which are inserted less than 10 no of records.
The tables has the cretaed_date column and along with other key column which will have unique values.
Ex1: The user might have inserted records from application, per week basis, between the date range '01-jun-2013' - 08-jun-2013 , the no of records created by the user during this week may be less than 10 records or more.
But I want to populate the records by giving date range that too, it should pick the records the count which fall with in 10 records.
I dont want the query to populate the records if the user has inserted more than 10 records in a week.
Ex2:
User 1 has created 15 records during the week 1 ( the query should not populate this ).
User 2: has cretaed less than 10 records from the UI during the week 2. ( This details should get populated ).
Thanks

Use COUNT to find how many rows where inserted in a week.
If this does not answer your question then please read Re: 2. How do I ask a question on the forums? And provide necessary details.

SQL Query to retrieve the All records based on the Max Dates.

Hello all,
I am trying to retrieve the newest record based on the date field ( nextDate ).
Currently there are only 4 records in the MC_Maintenance table and two in the Machine table.
Machine table
MC_id             EquipID
1                     0227
MC_id             EquipID
2                     0228
MC_Maintenance table
Maint_id           MC_id             Next_maint
1                      2                      08/25/2010
2                      2                      07/01/2010
3                      1                      06/11/2010
4                      1                      07/11/2010
What I am trying to accomplish is,
list the two machines from the Machine table with the MAX(Next_maint) controlling the MC_Maintenance output list
These are the records that I would like to Display.
Maint_id           MC_id             Next_maint
1                      2                      08/25/2010
4                      1                      07/11/2010
Below is the SQL Query
SELECT
       MC.MC_ID as ID,
        MC.complete_Date as completed,
        MC.next_maint as nextDate,
        MC.maint_notes as Notes,
        MC.facility as Facility,
        M.EquipId,
        M.name as name,
        M.SerialNumber as SN,
        M.dept as dept,
        M.Freq as freq
        From MC_Maintenance MC, Machine M
        where MC.MC_ID = M.MC_ID
'           USING MAX(nextDate )
Any ideas would help.
TJ

I would have thought that was a simple group by problem?
SELECT M.EquipID, MC.MC_ID, Max(MC.next_maint)
FROM MC_Maintenance MC INNER JOIN Machine M ON MC.MC_ID = M.MC_ID
GROUP BY M.EquipID, MC.MC_ID

How to insert the records using sql query

hi,
i insert the record uisng sql query and DOTNET programme successfully and increase the doc num .ubut when i try to add record using SAP B1 the old Doc no show.It means its not consider the docnums which are not inserted by sql query.
how can i solve this problem?
Regards,
M.Thippa Reddy

You are not support use Insert / Update / Delete on SAP Databases directly.
SAP will not support any database, which is inconsistent, due to SQL-Queries, which modify datasets or the datastructure of the SAP Business One Database. This includes any update-, delete- or drop-statements executed via SQL-Server Tools or via the the query interface of SAP Business One
Check SAP Note: 896891 Support Scope for SAP Business One - DB Integrity
[https://websmp130.sap-ag.de/sap(bD1lbiZjPTAwMQ==)/bc/bsp/spn/smb_searchnotes/display.htm?note_langu=E&note_numm=896891]

SQL query to fetch records from 26 onwards

Want to know SQL query to fetch records from 26 onwards.

See the fifth entry on the FAQ page:
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SQL Query criteria eliminates too many records

This SQL query results in zero out of 268 records due to the criteria of (((Products.ProductFamily)<=0))
SELECT images.url_img, images.alt_img, images.productid_img, Products.ProductFamily, Products.ID
FROM images LEFT JOIN Products ON images.productid_img = Products.ID
WHERE (((Products.ProductFamily)<=0));
However, if you change the <=0 to >0, the correct 140 out of 268 records show up. So if 140 records are greater than zero, shouldn't the remaining 128 records be less than or equal to zero? How do I get the results that are <=0 to show up?
FYI - Products.ProductFamily data type is numeric, field size is integer, decimal places is auto, default value is 0, required is No, indexed is No

Yes, but can you still answer the question? I am trying to determine if the problem is in the join or the where clause. What happens if you remove the join and still include results from the product table? Can you give an example of data for a few rows (both tables) that are not working as expected?

Need sql query to find ten records in sequential manner

Plz help me
I need to have ten records on my page. at the bottom of the page, i want to dispaly the number of pages that have records , just as a google page shows at the bottom. if the moves user moves to the next page , the next ten records must be displayed. suppose the user selects and clicks 5th page then the records on that page are displayed.How can i write the sql query corresponding to this specificationi don't want all records to be fetched at the same time and put on the server, rather whenever the page is opened , the corresponding records are fetched and displayed

Hi
Maybe you should use a CachedRowSet.
Look this:
http://developer.java.sun.com/developer/technicalArticles/javaserverpages/cachedrowset/
This page has a example that will help you.

SQL Query record coount before firing

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