How Can I Get Actual Operation Cost From Actual Execution Plan?
Jul 25, 2006
I have a view in SQLServer 2005. It took 30 sec. to finish. Then I deleted 4500 records from one table that is used in view. It took 90 sec. to finish now. I did a comparison on Actual Execution Plan between before I deleted data and after I deleted data, they are almost same, only different is Actual Number Rows become less after deleted data. So, I wonder why data become less but time become more. When I look closely on the Actual Execution Plan, the ridiculous thing is, there are only Estimated Operation Cost on each step, no Actual Operation Cost. I guess there are something wrong with optimizer because reuse same Execution Plan, but how can I tell which step wrong without Actual Operation Cost.
Thanks!
Henry
View 2 Replies
ADVERTISEMENT
Nov 11, 2015
I have two queries yielding the same result that I wanted to compare for performance. I did enter both queries in one Mangement Studio query window and execute them as one batch with the actual query plan included.Query 1 took 8.2 seconds to complete and the query plan said that the cost was 21% of the batchQuery 2 took 2.3 seconds to complete and the query plan said that the cost was 79% of the batch.The queries were run on my local development machine. I was the only user. No other programs were running at the time of this test. The results are repeatable.I understand that the query with the lowest cost is not necessarily the fastest query. On the other hand, the difference is quite big. The query that has approx. 80% of the cost takes 20% of the time and the other way around. I have two questions:
Is such a discrepancy normal?Can conclusions be drawn from the cost distribution? For instance, does the query that takes 8.2 seconds but only costs 21% scale better?
View 9 Replies
View Related
Jul 7, 2006
The benefit of the actual execution plan is that you can see the actual number of rows passing through each step - compared to the estimated number of rows.But what about the "cost percentages" ?I believe I've read somewhere that these percentages is still just an estimate and is not based on the real execution.Does anyone know this and preferable have a link to something that documents it?Thanks
View 1 Replies
View Related
Nov 11, 2012
how can I get the execution time in millisecond of an MDX query in SSAS?For sql we can get it by:
Code:
set statistics time on
--query----
set statistics time off.But I am not getting anything for MDX.
View 6 Replies
View Related
May 7, 2014
I have problems sometimes with a package.
There is and SQL Agent job that starts a package (from a file system using cmd command). Usually job takes 8-10 minutes. But sometimes it get stuck for a long time (1+ hour).
DTexec process can be found with procmon, but it seems it just not doing anything (And package is not logging to file Start of the execution) After long wait it just runs a package quickly.
I've moved a package to SSIS catalog to try to get more detailed logging, but with no luck.
Job starts at 1 PM, package execution starts at 1:49 PM. Without any messages about the execution in SSISDB log.
First I've thought it might be long validation problem, but when package executes validation messages are there and they perform quick.
View 3 Replies
View Related
Apr 13, 2008
what does query cost(retrive to the batch) mean in execution plan?
what is the differeence between query cost :100% and 65%?
View 3 Replies
View Related
Mar 18, 2004
Hello everybody...
I'm trying to get the Row ID of a result set. Is there a way to do it?
Something like this i think:
select @@rowid, column1, column2
from table
Best regards,
Dalcom.
View 14 Replies
View Related
Feb 23, 2007
I'm getting a "Input string was not in a correct format." when I'm running a insert statement against my SQL Server 2005 db table. This helps me zilch as I cant see the actual SQL statement to see which one wasnt right. Using a SQLDatasource and a Formview btw.
Datasource is called xSqlIB and formview is called fmvIB.
Any ideas?
View 12 Replies
View Related
Jun 15, 2006
SELECT DATENAME(day, getdate()) AS 'Day Name'
comes back as 15 but i want it to come back with thursday
Cheers,
Craig
View 4 Replies
View Related
Dec 7, 2007
Hi All,
I have a XL source file, the first column contains the name, 199001,19902.....,199012,
In SSIS package using XL source if click the 1st column contains headings it automatically covert my heading as name,F2,F3.....F13.
But i need as it is like Name,199001,19902,.....,199012 as a heading than i am using unpivot transformation and convert the column into row to my staging table.
Please sort out my problem i need the XL column like i mentioned above( Name,199001,19902,.....,199012 )
Thanks in advance
Thanks,
syed
View 7 Replies
View Related
Apr 11, 2006
Hi Guys
I pick up the following in a profiler trace.
exec
sp_cursorexecute 197, @P1 output, @P2 output, @P3 output, @P4 output,
'PSRF_REPORTING_FOLDERS', 'Jan 1 1900 12:00:00:000AM'
Normally to find the actual sql that executes i go up in the trace until i find the relevant cursor prepare. In this case the one for 197 cursor prepare.
But this time around i cannot find it, these are app servers connected so for all i know the cursor could be prepared at 5am in the morning and re-used all day long.
Is there anyway (adding certain profiler events or something), so that i can see the actual statement held in the cursor ?
Thanx
View 5 Replies
View Related
Jun 29, 2004
Hi,
How do I check what is the actual DB size that is currently being use?
e.g. I set 10 GB as initial size. A few days and a few transactions later, how can I know how much was used since it is still under 10GB and checking the physical DB file will not tell me anything.
View 2 Replies
View Related
Feb 3, 2004
Hello
I am running 6.5 sql and work with a traffic and billing software ( called NOvar) from another company(encoda system) which does a lot of scheduling, reporting etc
I dont know the contents of table (100 table ) and their column
or which table its querying to take out reports
Can i create a trace to know the syntax each time some thing is executed.
I also need to create customized reports, can this be done by sql reporting or does i need to go from crystal reports or someone else
For i dont know any language except sql and HTML
sej
View 2 Replies
View Related
Sep 12, 2014
I know I have had this before, but I can't remember what I did to fix it.I have a field that is varchar. I need to count the numbers up.
Example
Claim Count
37
6
When I do my query
Select Distinct count([Claim]) from Table
It comes up with 2.How do I have it recognize that I need the actual number count? I need it to be 43.
View 2 Replies
View Related
Jan 29, 2015
Query for output this result on Table C ?
========================================================
I have one table store below information, and other one table is store staff name and phone number. how to display of table c data by new column and using the key staff_code1=staff_id or staff_code2= staff_id or staff_code3=staff_id ?
---------------------------------------------------------
Table A
staff_code1,staff_code2,staff_code3
Table B
staff name
staff_id
staff_phone
-----------------------------------------------
Table C display in new column .
staff name-1 code1 staff name-2 code2 , staff name-3 code3
peter id-01 susuan id-03 david id-05
View 1 Replies
View Related
Dec 13, 2007
Hello everyone!
Whenever i insert a new row i would like to have the current date and time in the column DATE. How is that possible?
Thanks a lot and greetings from Vienna
Landau
View 3 Replies
View Related
Sep 15, 2006
I have a stored procedure that will execute with less than 1,000 reads onetime (with a specified set of parameters), then with a different set ofparameters the procedure executes with close to 500,000 reads (according toProfiler).In comparing the execution plans, they are the same, except for the actualand estimated number of rows. When the proc runs with parameters that producereads that are less than 1,000 the actual and estimated number of rows equal1. When the proc runs with parameters that produce reads are near 500,000 theactual rows are approximately 85,000 and the estimated rows equal 1.Then I run:DBCC DROPCLEANBUFFERSDBCC FREEPROCCACHEIf I then reverse the order of execution by executing the procedure thatinitially executes with close to 500,000 reads first, the reads drop to lessthan 2,000. The execution plan shows the acutual number of rows equal to 1,and the estimated rows equal to 2.27. Then when I run the procedure thatinitially executed with less than 1,000 reads, it continues to run at lessthan 1,000 reads, and the actual number of rows is equal to 1 and theestimated rows equal to 2.27. When run in this order, there is consistency inthe actual and estimated number of rows and the reads for both executionswith differing parameters are within reason.Do I need to run DBCC DROPCLEANBUFFERS and DBCC FREEPROCCACHE on productionand then ensure that the procedure that ran close to 500,000 reads is runfirst to ensure the proper plan, as well as using a KEEP PLAN option? Or,what other options might you recommend?I am running SQL 2000 SP4.--Message posted via SQLMonster.comhttp://www.sqlmonster.com/Uwe/Forum...eneral/200609/1
View 4 Replies
View Related
Sep 11, 2007
Does anyone know how to obain the actual creator of a database by using TSQL or SP? I need to know actual Login not DBO.
Thanks.
View 4 Replies
View Related
Jun 21, 2004
Hi Everybody,
I like to compute the actual physical database file size using queries.
From the EM database properties, the file size shown is not matching with the master..sysaltfiles.size
Ex. Actual file size is 12MB and 1MB for MDF & LDF respectively.
'sysaltfiles' shows 1464 & 96 resp. Since they are shoing it as 8K Pages,
96*8 = 768KB is not matching with 1024KB for the LDF file.
Is there any overheads (additional space from the physical file for file headers) allocated?
Thanks
Babu
View 3 Replies
View Related
Jan 30, 2004
I am using 6.5 and on this i used different program
and people execute query
Can i place a trace to show what query is being executed from which program and at what time
Meaning the syntax of it and by whom
I start tracing and it paging file becomes to large
sej
View 3 Replies
View Related
Jun 24, 2015
I have an instance where a process is trying to insert a Customer into the Customers table and CustomerLastName is a non nullable field. Customer's last name is Null. Should this be the reason this Customer is never in the end table?
View 5 Replies
View Related
Mar 20, 2007
Hello. I've seached the this forum and others for this question of mine but couldn't get any thing. Everyone know that in MSSQL, the precision of datetime is currently limited to 1/300th of a second. My question is, is there any way to store the actual millisecond in the a table? Also, later, able to pull it up from the table? What are the options?
Please advise.
Thanks,
Rick..
View 11 Replies
View Related
Sep 4, 2007
i'm hoping someone can help me out with this problem.
i have a database called Tracking.mdf and its associated logfile Tracking_log.ldf
i need to build another database based on the above with more tables and keep the data separate hence the requirement to make a copy of the tracking data file i've tried changing its name but it will not attach. i can change its database name to whatever i want but somehow can't find out how i can say change its actual filename to Tracker.mdf and Tracker_log.ldf
would someone be able to help me out. thanks.
View 1 Replies
View Related
Aug 16, 2007
Need to know the actual size on the tape drive
I€™m using LTO3 tape drive (400GB) the used media is for LTO2, currently I€™m looking for LTO4(1.6TB) but I need the backward compatibility to support LTO3 tapes so I can go for LTO2 media or LTO3 media.
I need to know the size of the database backup (Ms SQL2005 SP1 x64-bit, on Ms Windows 2003 R2 x64-bit) on the tape drive. I can see the backup size of the database but not the size on the tape which is using hardware compression.
Is there a way or a tool to view that.
View 4 Replies
View Related
Aug 28, 2007
Sql Server has many data types.
For Example:
smallint
Integer data from -2^15 (-32,768) through 2^15 - 1 (32,767). Storage size is 2 bytes.
I want to know that
If it contains like 0 or 100 or 1000 or -200 or -2000 or more or less.
What will its actual size?
2 bytes or change with the value.
Please also mention the reference with your answer. if available.
View 3 Replies
View Related
Jul 12, 2004
Hello fellow .net developers,
In a website I'm working on I need to be able to put all of the user tables in a database in a dropdownlist.
Another dropdownlist then will autopopulate itself with the names of all the columns from the table selected in the first dropdownlist.
So, what I need to know is: is there a sql statement that can return this type of information?
Example:
Table Names in Database: Customers, Suppliers
Columns in Customers Table: Name, Phone, Email, Address
I click on the word "Customers" in the first dropdownlist.
I then see the words "Name", "Phone", "Email", "Address" in the second dropdownlist.
I'm sure you all know this (but I'll say it anyways): I could hardcode this stuff in my code behind file, but that would be really annoying and if the table structure changes I would have to revise my code on the webpage. So any ideas on how to do this the right way would be really cool.
Thanks in advance,
Robert
View 5 Replies
View Related
Jun 17, 1999
Hi,
I used to use a insert subselect on the 6.5 catalog table
View 1 Replies
View Related
Apr 29, 2008
Hi all,
I have a problem during the bulk insertion. SQL truncated each line of the file.
The format file is:
9.0
1
1 SQLCHAR 0 8000 "
" 1 if1 ""
Table:
CREATE TABLE #if1 (
[if1] [varchar] (8000) NULL
)
Query:
SET @sqlstr = 'BULK INSERT #if1 FROM ''' + @inputfilepath + '.if1'' WITH (FORMATFILE = ''' + @ifformat + '.fmt1'')'
EXEC(@SQLSTR)
Everything is fine. The only problem is the lines are truncated.
Any ideas?
View 1 Replies
View Related
Nov 29, 2005
I've gotten sort of fed up with dealing with regional date settings onthe client side and am considering the following scheme - justwondering if anyone has a negative view of it or not:Instead of@StartDate datetime,@EndDate datetimeUse:@StartDaysDiff int,@EndDaysDiff intIn the front end app take the desired date and do a DATEDIFF with thecurrent date, then pass the date diff as a parameter as an integerrather than deal with the dates at all.Then...DECLARE @TodayDate datetime, @StartDate datetime, @EndDate datetimeSELECT @TodayDate = GETDATE()SELECT @StartDate = DATEDIFF(DAY,@StartDaysDiff,@TodayDate)SELECT @EndDate = DATEDIFF(DAY,@EndDaysDiff,@TodayDate)SELECTa.SomethingFROMdbo.Appointments aWHEREa.AppointmentDate BETWEEN @StartDate and @EndDateJust wondering ...Thanks,lq
View 9 Replies
View Related
May 23, 2008
I have gone through the table partitioning in MSDN, like Designing Partitions to Manage Subsets of Data . But how to do this in actual world, since some db need to partition for 7 days, then archive these days records on the 8th day, while other prefer 14 days/monthly, and run this repetitively for many years? If this is running weekly, how can i generate the scheme and function dynamically? What if ID for row count is not viable?
Sure this will not work:
Code Snippet
CREATE PARTITION FUNCTION [TransactionRangePF1] (datetime)
AS RANGE RIGHT FOR VALUES ('10/01/2003', '10/02/2003', '10/03/2003',
'10/04/2004', '10/05/2004', '10/06/2004', '10/07/2004');
GO
Then how to drop partition periodically?
View 6 Replies
View Related
Mar 21, 2007
Hi,
In a dataflow, I've an OLE DB source before a script component.
When I link the Red Output of the source to the script component, I want to get the COLUMN NAME (which is the source of error), instead of the default ErrorColumn (LineageID). I'm not able to succeed with the following code snippet.
My code is something like this:
Dim temp_Int_EmpID As Microsoft.SqlServer.Dts.Pipeline.Wrapper.IDTSInputColumn90
temp_Int_EmpID = Microsoft.SqlServer.Dts.Pipeline.Wrapper.IDTSInputColumnCollection90.GetInputColumnByLineageID(Row.ErrorColumn)
Pls. let me know if it's possible to achieve what I require & if so, how.
Kindly reply at the earliest !
Regards,
Natesh PV
View 1 Replies
View Related
Nov 10, 2015
Having a SQL Server 2012 Enterprise (x64) on a Windows 2012 R2. We need to know, a reliable way, the number of processor sql server is using at a give time. We already know how many total processor are available to sql by getting info from sys.dm_os_sys_info.
For instance, a server has 40 processors, we want to know how many of those are being used at a given time. Since the load on the server may not be that high, we would like to know how many processors we can eliminate and the load will still be unaffected.
After watching the server performance for a while, we are predicting we may only need 16. But we would like to get some statistics before we reduce it to this number.
View 12 Replies
View Related
Jun 17, 2015
STEP1:
CREATE TABLE Trace(Statement VARCHAR(MAX))
INSERT INTO TraceÂ
VALUES('select * from Account'),('select * from Account') ,('Select LastUpdated,Lastdeleted,LastInserted  from History'),
('Insert into Account  Select lastUpdated from History'),('Delete from OldAccount where LastUpdatedId=3'),('Delete from OldAccount where LastDeletedId=3'),('Delete from OldAccount where LastInserted=3'),('DROP TABLE BMP')
[code]....
now,when i run step3 ; i wanted to see if there is actually a delete or insert or select or update happens but as i used like %% (matching characters) i am getting all names matching with the % % , example row 7 in above is there a way i can use any wildcards and only find if there is actual delete, actual insert, actual select, actual update statement happening.
View 12 Replies
View Related
