SQL Server 2012 Performance Dashboard Main advices me this:
Since the application is from a vendor and I have no control over its code, how can improve this sitation?
After installing SP2 for SQL Serve 2005, I get strange errors when using either "Estimated Execution Plan" or "Actual Execution Plan".
Using "Estimated Execution Plan" generates this error
An error occurred while executing batch. Error message is: Error processing execution plan results. The error message is:
There is an error in XML document (1, 3998).
Unexpected end of file while parsing has occurred. Line 1, position 3998.
Using "Actual Execution Plan" generates this error
An error occurred while executing batch. Error message is: Error processing execution plan results. The error message is:
There is an error in XML document (1, 4001).
Unexpected end of file has occurred. The following elements are not closed: RelOp, ComputeScalar, RelOp, Update, RelOp, QueryPlan, StmtSimple, Statements, Batch, BatchSequence, ShowPlanXML. Line 1, position 4001.
All I do is testing this solutiondeclare@t table (dt datetime)
insert@t
select'02-Jan-2007' union all
select'01-Feb-2007' union all
select'10-Feb-2007' union all
select'28-Feb-2007' union all
select'18-Mar-2007'
DECLARE@DaysRange INT,
@NumOfCalls INT
SELECT@DaysRange = 35,
@NumOfCalls = 4
SELECTt1.dt AS theDate
FROM@t AS t1
CROSS JOIN@t AS t2
WHEREt2.dt >= DATEADD(day, DATEDIFF(day, 0, t1.dt), 0)
AND t2.dt < DATEADD(day, DATEDIFF(day, 0, t1.dt), @DaysRange)
OR
t2.dt >= DATEADD(day, DATEDIFF(day, @DaysRange, t1.dt), 1)
AND t2.dt < DATEADD(day, DATEDIFF(day, 0, t1.dt), 1)
GROUP BYt1.dt
HAVINGCOUNT(*) >= @NumOfCallsHas anyone else experienced this?
Peter Larsson
Helsingborg, Sweden
Hello ,
I wanted to know whether we have an execution plan enabled in SQL 6.5 as we have it in SQL 7.0 and SQL 2000 .
I.e when we execute a query and if we enable ' show execution plan 'then it creates a map and shows the vital statistics .
If that is available on SQL 6.5 then i am missing that tool .
How can i have it installed on my SQL 6.5 server ??
Thanks.
When viewing an estimated query plan for a stored procedure with multiple query statements, two things stand out to me and I wanted to get confirmation if I'm correct.
1. Under <ParameterList><ColumnReference... does the xml attribute "ParameterCompiledValue" represent the value used when the query plan was generated?
<ParameterList>
<ColumnReference Column="@Measure" ParameterCompiledValue="'all'" />
</ParameterList>
</QueryPlan>
</StmtSimple>
2. Does each query statement that makes up the execution plan for the stored procedure have it's own execution plan? And meaning the stored procedure is made up of multiple query plans that could have been generated at a different time to another part of that stored procedure?
I have same query but when executed from different server use different plan. when it runs on QA box it is faster and when it runs on PRD it is slow.
Is it possible to force SQL Server to use QA plan by giving a hint?
if t-sql query is perfectly run in development and when I execute in production at that time I want to use execution plan which is in development . so how I can do using cache? I know about hint we can use hint USE_PLANE. but I want to do with cache .
View 1 Replies View RelatedThis is probably a very stupid question. I have been out of the SQL Server arena for awhile and am now getting re acclimated. It was my understanding that using execution plan in query analyzer does not really execute the query against the query's database tables. Is this right? Tom.
View 1 Replies View Related
Hi,
I am developing an application (VB) that should present a query estimated execution plan.
Using the SQL Server Management Studio, I should execute the following commands to see the query's estimated execution plan:
SET SHOWPLAN_XML ON
go
MyQuery
go
SET SHOWPLAN_XML OFF
go
The query is not executed. The result is the query execution plan.
In my application, I call Connection.Execute to execute the 'SET SHOWPLAN_XML ON'. Then, I use a Resultset submit the query. The query is executed and the execution plan is not returned.
Does anyone have any ideas?
Thanks
what does query cost(retrive to the batch) mean in execution plan?
what is the differeence between query cost :100% and 65%?
One of my varchar columns in a table has multiple key words enclosed in a pattern of special characters.
Eg: William Shakespeare was an English [##poet##], [##playwright##], and [##actor##], widely regarded as the greatest [##writer##] in the English language and the world's pre-eminent [##dramatist##]. He is often called England's national [##poet##] and the "Bard of Avon". His extant works, including some collaborations, consist of about 38 plays, 154 [##sonnets##], two long narrative [##poems##], and a few other [##verses##], of which the authorship of some is uncertain. His plays have been translated into every major living language and are performed more often than those of any other [##playwright##].
I need to write to query to find all distinct key words that are enclosed within [## and ##]. My query should yield the following results from the string in the example above
[##actor##]
[##dramatist##]
[##playwright##] -- 2 occurrances, but I need it only once in my result set
[##poems##]
[##poet##] -- 2 occurrances, but I need it only once in my result set
[##sonnets##]
[##verses##]
[##writer##]
I need to run this on a large table, so I am looking for the best possible way to minimize any performance issues.
Just give you sample code, I have provided below 2 separate snippets, one with table variable and another with temp table.
DECLARE @MyTable TABLE (MyString VARCHAR (8000))
INSERT @MyTable VALUES ('William Shakespeare was an English [##poet##], [##playwright##], and [##actor##], widely regarded as the greatest [##writer##] in the English language and the world''s pre-eminent [##dramatist##]. He is often called England''s national [##poet##] and the "Bard of Avon". His extant works, including some collaborations, consist of about 38 plays, 154 [##sonnets##], two long narrative [##poems##], and a few other [##verses##], of which the authorship of some is uncertain.
[code].....
I have SQL 7.0 SP2 on NT 4.0 SP5. My database is 180GIG. 23 Tables. It has been up and running for 2 years without any problems. All of a sudden my queries have started taking a long time to run. The optimizer has decided that table scans are better than indexes. If I use query hints they work just fine, but I can't modify all of our code to make these changes.
This is happening on all tables. Records counts are the in the same range they have always been.
Statistics and indexes are all fine and current. Have dropped and rebuilt both.
Has anybody else seen this behavior.
Hi All,
I have to get some knowledge in Query Execution Plan.
Is there any links which i can refer for the same
Thanks,
Muthu
I am trying to tune a very long running query (18 minutes on an Axim X51, 8secs on my laptop), but I can't get the query plan file that is generated on the device to load in the Sql Server Management Studio. I am using the Sql Everywhere CTP on the device, and version 9.00.2047 of the management studio shell.
FWIW, when I try to create the execution plan by running the same query on a .sdf file local on my laptop, I get a similar error trying to view the query plan.
Apart from the query plan issues, it would appear (just from the query execution time) that the indexes defined on the sdf file are not being used when executing the query on the device, but are being used when executing the query on the laptop. This is pure SWAG on my part, though.
I can't figure out how to attach a file to the post, unfortunately.
Thanks for any help you can offer.
Matthew Belk, BizSpeed, Inc.
know if there is any way out to run execution plan for parameterized queries?
As application is sending queries which are mostly parameterized in nature and values being used are very robust in nature, So i can not even make a guess.
Hi,I have a question about estimated query execution plans that aregenerated in QA of MSSQL.If I point at an icon/physical operator in the estimated QEP, it showsmesome statistics about the operator.Is there a way to retrieve these statistics through a query, i.e., canthese statistics be available to the user?Also, is there a way to generate these statistics on my own?thanks in advance-TC.
View 2 Replies View RelatedHi All,I'm a relative newbie to SQL Server, so please forgive me if this is adaft question...When I set "Show Execution Plan" on in Query Analyzer, and execute a(fairly complex) sproc, I note that a particular query is reported ashaving a query cost of "71% relative to the batch" - however, this isnowhere near the slowest executing query in the batch - other querieswhich take over twice as long are reported as having costs in theorder of a few percent each.Am I misreading the execution plan? Note that I'm looking at thegraphical plan, and am not reading the 'estimated' plan - I'm usingthe one generated from executing the sproc. My expectation was thatthis would be based on the execution times of the queries within thesproc, however, this does not appear to be the case. (Note - Idetermined execution times from PRINT statements, using GETDATE() todetermine the current time, down to milliseconds).Any feedback would be of great assistance... I may well have tochange the way I approach optimizing queries based on these findings.Thanks,LemonSmasher.
View 3 Replies View RelatedDoes anyone know if it is possible to access the execution plan results programmatically through a stored procedure or .NET assembly? I have the code sample
SET SHOWPLAN_XML ON; query... SET SHOWPLAN_XML OFF;
but it can only be run from the interface. I have tried a couple of solutions including dynamic sql to try to capture the results in a variable or file with no luck.
Does anyone know of a way to programmatically capture this information? We are doing some research with distributed query processing of dynamically generated queries using multiple processing nodes, and it would be helpful to know an estimate of how large the query is before sending it away to be processed.
I have looked at the dm_exec_query_stats view; but it can only be run on a query that has already been executed. I need to know the execution plan before the query is executed. If there is a way to get a query to show up in this view without being executed, then that would work as well.
Thanks -- MT
Is it possible to check query execution plan of a store procedure from create script (before creating it)?
Basically the developers want to know how a newly developed procedure will perform in production environment. Now, I don't want to create it in production for just checking the execution plan. However they've provided SQL script for the procedure. Now wondering is there any way to look at the execution plan for this procedure from the script provided?
how to eliminate a key lookup from the execution plan
SET TRANSACTION ISOLATION LEVEL READ COMMITTED
SET NOCOUNT ON
SELECT COUNT(ph.lid) AS Total
FROM PLB ph
WHERE ph.lPhysician = @Physician
AND ph.BSF = CAST(0 AS bit)
[code]....
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?
Is it possible to check query execution plan of a store procedure from create script (before creating it)?
Basically the developers want to know how a newly developed procedure will perform in production environment. Now, I don't want to create it in production for just checking the execution plan. However they've provided SQL script for the procedure. Now wondering is there any way to look at the execution plan for this procedure from the script provided?
We know we can use the event lock_deadlock and xml_deadlock_report to capture the deadlock info, however I also want to capture the execution plans for all of the SPIDs in the deadlock graph, how to output the execution plans to the extended events trace results either ? such as if there is an action for execution plan or workaround for it ?If there is no built in action for execution plan , may I know if we can add the customized info to the extended events results file also ? Such as when the deadlock related event happens , then we can run a query to get some info ,then added the info along with other info such as sql_text, dbname etc to the events trace results file either ? The reason is if we also know the execution plans when the deadlock happens, it is useful to turning the query based on the execution plans to reduce deadlock happening .
View 5 Replies View RelatedI think not. Microsoft says it is possible: one for parallel and one for serial execution. Don't believe that's possible for a stored procedure to change execution plans on the fly. Have an on-going problem with timeout occurring with an application and narrowed the culprit to a stored procedure. I couldn't find any obvious issues database wise, no locks, etc. so I recompiled (altered) the sproc without making any changes and the issue cleared for a couple days.
It happened again to day, and so I recompiled (altered) the sproc and it went away again. No code changes to both application (so they say) and stored procedure. I ran the below code snippet to check for sprocs with multiple cached plans and the offending one came up on a short list. So, my question is, Is it one sproc per query plan or can there be more than one. I understand the connection issues.
Code:
SELECT db_name(st.dbid) DBName,
object_schema_name(st.objectid, dbid) SchemaName,
object_name(st.objectid, dbid) StoredProcedure,
MAX(cp.usecounts) Execution_count,
st.text [Plan_Text]
INTO #TMP
[Code] .....
I have 3 tables:
TABLE [dbo].[Tbl_Products](
[Product_ID] [int] IDENTITY(1,1) NOT NULL,
[Product_Name] [nvarchar](50) NOT NULL,
[Catagory_ID] [int] NOT NULL,
[Entry_Date] [date] NOT NULL,
[Code] ....
I am using this query to get ( Product name from tbl_products , Buy Price - Total Price- Total Quantity from Tbl_Details )
But am getting a multiple result if the order purchase has more than 1 item :
SELECT DISTINCT B.Product_Name,A.AllPieceBoxes,
A.BuyPrice,A.TotalPrice,A.BuyPrice
FROM
Tbl_Products B INNER JOIN Tbl_PurchaseHeader C
ON C.ProductId=B.Product_ID INNER JOIN Tbl_PurchaseDetails A
ON A.PurchaseOrder=C.purchaseOrder
WHERE A.PurchaseOrder=3
Hi,
I've a dataset which is filled using a stored procedure in either MSSQL2005 or 2000.
The procedure may return sql-errors (f.ex 208 if a table is not found), but the procedure will anyway return data which shall populate the dataset, independent on 208 errors.
The procedure works fine if running it from f.ex. SqlMgtStudio, and the dataset is filled if the procedure triggers no errors.
However, if the procedure triggers an error like 208, then I get an exception in the application and the dataset is not populated with the data returned by the procedure.
Is there a way of telling the DataSet/SqlDataAdapter to fill the dataset even if the sql-code genererates som errors?
Regards, Guttorm
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 RelatedI have a table that stores Terminal ID, Product Name, Cost and Effective Date. I need to generate query that will produce record set with start effective date and end date based on terminal and product. Table has over million records. In example below you could see table structure/data and desired outcome.
SELECT fmc_terminal, fmc_date = CAST(d. fmc_date AS DATETIME)
,d.fmc_prodlnk, d. fmc_cost
INTO #TestTable
FROM (
SELECT 1, '2014-12-03 00:04:00.000','A', 2.25 UNION ALL
[Code] ....
Expected outcome
fmc_terminalfmc_prodlnkfmc_cost StartDateEndDate
1A2.25 NULL2014-12-03 00:04:00.000
1A2.26 2014-12-03 00:04:00.0002014-12-03 11:33:00.000
And so on….
We have a issue with a MDS server that have been over us for a couple of days, the original error msg from SQL Server Engine is the one "The query processor could not produce a query plan" but the ones we get on the Excel-Addin are "Sequece contains no elements" or "The value cannot be null" T
• Using Microsoft SQL Server 2012 (SP1) - 11.0.3393.0 (X64) for 6months on this server without issues
• Two weeks ago we started to have 2 errors: "Sequence Contains No Elements" | "The Value Cannot Be Null"
• We are using the last version of Excel Add-in
• We try to reinstall the MDS feature
• If I backup/restore MDS database to other server it works
• We updated to SQL 2012 SP2 + CU4 but the error persisted ...
Looking at the MDSTraceLog we are routed to the this msg
SQL Error Debug Info: Number: 8624, Message: Internal Query Processor Error: The query processor could not produce a query plan. For more information, contact Customer Support Services., Server: bbdvsql03inst01, Proc: udpMetadataEntityGetDetailsXML, Line: 28
At line 28 udpMetadataEntityGetDetailsXML is calling udfMetadataEntityGetDetailsXML … and here is where we stopped
** Error found when try to get data from a entity using Excel add-in **
===================================
Sequence contains no elements
------------------------------
Program Location:
at Microsoft.MasterDataServices.AsyncEssentials.AsyncResultBase.EndInvoke()
at Microsoft.MasterDataServices.ExcelAddInCore.AsyncProviderBase`1.EndOperation(IAsyncResult ar)
[code]....
Hi Everyone:
*Before* I actually call up Microsoft SQL Customer Support Services and ask them, I wanted to ping other people to see if you have ever ran into this exact error
"Internal Query Processor Error: The query processor could not produce a query plan. For more information, contact Customer Support Services."
I would have searched the forums myself, but at this moment in time, search is broken :(
If anyone has run into this error before, what conditions would exist that this could happen? That is, if I can sniff this out with suggestions from the community, I would be happy to do so.
It is an oddity because if I alter a couple subqueries in the where clause [ i.e., where tab.Col = (select val from tab2 where id='122') ]to not have subqueries [hand coded values], then the t-sql result is fine. It's not as if subqueries are oddities... I've used them when appropriate.
fwiw - Not a newbie t-sql guy. ISV working almost daily with t-sql since MS SQL 2000. I have never seen this message before...at least I don't recall ever seeing it.
Thanks in advance for other suggested examination paths.
I have a table called MessageBoard. It has a column called Messages.
A user can type text including any html tags through a text area ans when he saves it by clicking a button, the content typed by the user is saved in the MessageBoard Table (in the Messages) column. So once saved, the html tags are kept intact. If I have to find and replace certain html tags, what kind of SQL Query I have to write?
For example I want to find all the <pre> </pre> tags and replace it with <p> </p> tags. How do I do this?
I am trying to optimize a stored procedure in SQL 2008. When I look at an actual execution plan generated from when I run it in SSMS it shows a table being used in the plan that has no relation to what is actually in the query script and this is where the biggest performance hit occurs.
I've never seen a table show up before that wasn't part of the query. why this might occur and how to correct it? I can't just change the query script because the table in question isn't there.
Is only one plan is kept for one query in plan cache?
i heard generally hash is created for a query and plan is search with this hash.
Hi all I'm using Sql server 2000 and sometimes i need to run my Queries in Query analizer before using them in my application just to test them...BUT most of the time when i run a query in query-analizer for second time ,query analizer populates the result (records) more quicker then the first time. Apparently it caches the query !!! i don't know but for some reasons i dont't want this , so how can i prevent Query-analizer from doing so?
Thanks in advance. Regards.