Drop PK And Query Runs Faster. Why?
Aug 23, 2000
I have a query which joins multiple tables. This query has suddenly begun to take up to 2 minutes to run (vs. 5-10 seconds previously).
No major change in number of records in the tables (currently about 220,000). When I remove the PK from one of the tables which then forces a tablescan, the query returns to running in 5-10 seconds. If I add the PK back, performance is back to 2 minutes.
Any suggestions short and/or long term?
Thanks for any help.
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Dec 29, 2003
I have an stored procedure that takes 23 seconds to execute. However, the same query is executed in 4 seconds.
All the tests where made using the Query Analizer.
What could be wrong?
Thanks a lot in advance.
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Jan 17, 2006
I work with datafiles containing more than 1 million records. Which would be faster DROP TABLE or TRUNCATE TABLE?
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Apr 23, 2008
Performance issue.
I have a very complex Stored Procedure called by a Job that is Scheduled to run every night.
It's execution takes sometimes 1 or 2 hours and sometimes 7 hours or more.
So, if it is running for more than 4 hours I stop the Job and I run the procedure from a Query Window and it never takes more than 2 hours.
Can anyone help me identify the problem ? I want to run from the Job and not to worry about it.
Some more information:
- It is SQL 2000 Enterprise with SP4 in a Cluster (It happens the same way in any node).
- The SQL Server and SQL Agent services run using a Domain Account that have full Administrative access.
- When I connect to a Query Window I also use a Windows Account.
- There is no locks or process bloking or being blocked while the job is running.
- Using the Task Manager the processor activity is ok, no more than 30 % in any processor.
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Jun 20, 2007
Hi y'all,
I've recently run a profiler on my code and following query took 7 seconds:
SELECT TOP 10 UI, COUNT(UI) AS Expr1 FROM table WHERE (UI <> 'custom_welcome') GROUP BY UI ORDER BY COUNT(UI) DESC
Is it possible to rewrite this so my code gets faster? It's also possible that it's due to the size of the table?
Thanks in advance! I'll let you know how long your query takes :)
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Mar 31, 2004
Hi!
I M basically an application developer & use simple sql queries in my programmings. I do not have much idea abt tuning/auditing part & thatswhy i m unable to answer them properly in my interviews. Can anybody give me some tips?????
Question 1:
In a stored procedure, One SELECT stmt is there & depending upon the @rowcount, it updates around 14000 records which is also written inside this stored procedure. Instead of writing this way, there is some other way which is faster than this. Can anybody tell me the correct way???
Question 2:Can anybody give me few examples like this?????? I need them desparetly.
Thanx. Bye.
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Jul 26, 2006
I have rewritten a stored procedure that consists of a single select that selects from a view. Essentially I combined the select in the view and the select in the sp into one select. I am now trying to determine if the new version is faster.
The estimated execution plan gives a ratio of 96% : 4% in favour of the new version when I run them together from a query window but when I try to time them I can't get a satisfactory result.
If I run each query once and display the difference between start and end time, they display 0. If I run each one 100, 200, etc times I get different results each time.
Is there anything I can do?
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Dec 19, 2003
I'm running a query, actually its an insert that works when using the TSQL below.
However when I try to use the debugger to step through and using the exact same values as those below I get the following error:
[Microsoft][ODBC SQL Server Driver]Invalid character value for cast specification
Its Killing me because everything else works, but this. Can somebody help.
DECLARE @NoteID INT,-- NULL OUTPUT,
@Note_Description NVARCHAR(3000),-- = NULL,
@Date DateTime,-- = NULL OUTPUT,
@ByWho NVARCHAR(30),-- = NULL,
@FK_Action_Performed NVARCHAR(40),-- = NULL,
@FK_UserID INT,-- = NULL,
@FK_JobID INT,-- = NULL,
@Job_Date DateTime,-- = NULL,
@Start DateTime,-- = NULL,
@Finish DateTime,-- = NULL,
@BeenRead NVARCHAR(10),-- = NULL
@FK_UserIDList NVARCHAR(4000)-- = NULL
--SET @NoteID = 409 --NULL OUTPUT,
SET @Note_Description = 'Tetsing'
--SET @Date DateTime = NULL OUTPUT,
SET @ByWho = 'GeorgeAgaian'
SET @FK_Action_Performed = 'Worked hard'
SET @FK_UserID = 5
SET @FK_JobID = 29
SET @Job_Date = 28/01/03
SET @Start = '1:00:20 PM'
SET @Finish = '1:00:20 PM'
SET @BeenRead = 'UnRead'
SET @FK_UserIDList = '1,2,3'
--AS
--SET NOCOUNT ON
SET NOCOUNT ON
SET XACT_ABORT ON
BEGIN TRANSACTION
SET @Date = GETDATE()
-- Insert Values into the customer table
INSERT Note (Note_Description,
Date,
ByWho,
FK_Action_Performed,
FK_UserID,
FK_JobID,
Job_Date,
Start,
Finish)
SELECT --@NoteID,
@Note_Description,
@Date,
@ByWho,
@FK_Action_Performed,
@FK_UserID,
@FK_JobID,
@Job_Date,
@Start,
@Finish
-- Get the new Customer Identifier, return as OUTPUT param
SELECT @NoteID = @@IDENTITY
-- Insert new notes for all the users that the note pertains to, in this case this will be by the assigned
-- users.
IF @FK_UserIDList IS NOT NULL
EXECUTE spInsertNotesByAssignedUsers @NoteID, @FK_UserIDList
-- Insert New Address record
-- Retrieve Address reference into @AddressId
-- EXEC spInsertForUserNote
-- @FK_UserID,
--@NoteID,
-- @BeenRead
-- @Fax,
-- @PKId,
-- @AddressId OUTPUT
COMMIT TRANSACTION
--------------------------------------------------
GO
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Oct 17, 2007
Can anyone give me the basics of speeding up reports that use queries or views or nested views?
Current reports are now taking over 2 minutes to show.We have thousands and sometimes even millions of records to report against.Queries have 4 and 5 table joins etc.
We are using ASP.NET 2.0 in Visual Studio 2005 and Crystal Reports.
Thanks
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Mar 20, 2007
I need help makeing the following query run more efficently.
Code:
SELECT t1.ID,t1.firstName,t1.lastName,t1.address,t1.city,t1.state, t1.zip,t1.locationAddress,t1.locationCity,t1.locationState,t1.locationZip
FROM Landlord_tbl t1
left outer join Mail_tbl t2
ON t2.potentialSitesID = t1.potentialSitesID
WHERE t2.mailed_out_date is null and NOT(t1.firstName+t1.lastName) is Null
GROUP BY t1.ID,t1.firstName,t1.lastName,t1.address,t1.city,t1.state, t1.zip,t1.locationAddress,t1.locationCity,t1.locationState,t1.locationZip
ORDER BY t1.firstName, t1.lastName, t1.city, t1.state
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Feb 28, 2008
Hi, when I execute the sql in DBTestArchive and then DBTest query analyzer , I found that the run time is shorter in DBTest. Can I make assumption that the query run time is shorter in DBTest if I select data from it and insert into another database? Thanks.
INSERT INTO DBTestArchive.dbo.tblVendorMasterArchive
SELECT * FROM DBTest.dbo.tblVendorMaster
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Mar 26, 2008
I have a query which will display the employee name who is handling maximum number of project.
the query is
Code Snippet
select EmployeeDetails.Empid,
EmployeeDetails.FirstName + ' '+EmployeeDetails.LastName as EmpName,
count(*) as Number_Of_Projects
from EmployeeDetails left outer join LUP_EmpProject
on EmployeeDetails.Empid= LUP_EmpProject.Empid
group by EmployeeDetails.Empid,EmployeeDetails.FirstName,EmployeeDetails.LastName
HAVING count(*)=(SELECT TOP 1 COUNT(EmpID)
FROM LUP_EmpProject GROUP BY EmpID ORDER BY 1 DESC)
where EmployeeDetails table contain empname and empid. LUP_EmpProject table contain empid and project id.
Can anybody help me in writing a better query than the above given?
Please help!!!!!!!!!!
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Jul 23, 2005
I am able to run a query which runs FAst in QA but slow in theapplication.It takes about 16 m in QA but 1000 ms on theApplication.What I wanted to know is why would the query take a longtime in the application when it runs fast on SQL server?How should we try debugging it?Ajay
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Oct 3, 2006
Any help would be really appreciated....
My stored procedure...
CREATE PROCEDURE business3rd7
@Fromdate DATETIME,
@ToDate DATETIME
AS
select distinct CONVERT(VARCHAR(10),Receipts.Companynumber1)+CONVE RT(VARCHAR(10),Receipts.Companynumber2) as co ,
Receipts.Premium1+Receipts.Premium2 as Premium,
"CAN"=case when Receipts.transactiontype='CAN'
then (receipts.premium1+receipts.premium2)
else 0
end,
"NET"=Receipts.Premium1+Receipts.Premium2-case when Receipts.transactiontype='CAN'
then (receipts.premium1+receipts.premium2)
else 0
end,
"#NEW"=case when Receipts.transactiontype='NEW' then count(Receipts.policynumber) else
0 end,
-------
"$NEW"=
case when Receipts.transactiontype='NEW' then (Receipts.Premium1+Receipts.premium2)
else 0 end,
"#REN"=case when Receipts.transactiontype='REN' then count(Receipts.policynumber) else
0 end,
"$RENEW"=
case when Receipts.transactiontype='REN' then (Receipts.Premium1+Receipts.premium2)
else 0 end,
"#AP"=case when Receipts.transactiontype='AP' then count(Receipts.policynumber) else 0
end,
"$AP"=
case when Receipts.transactiontype='AP' then (Receipts.Premium1+Receipts.premium2) else
0 end,
"#SENT"=case when policy.Renewalofferdate between @Fromdate AND @ToDate then
count(policy.policynumber) end,
"%"=case when case when Receipts.transactiontype='REN' then count(Receipts.policynumber)else 0
end =0 then 0
when case when policy.Renewalofferdate between @Fromdate AND @ToDate then
count(policy.policynumber) else 0 end=0 then 0
else
case when Receipts.transactiontype='REN' then count(Receipts.policynumber)else 0
end /case when policy.Renewalofferdate between @Fromdate AND @ToDate then
count(policy.policynumber) else 0 end end,
"Current Year"= case when policy.Renewalofferdate between @Fromdate AND @ToDate then
count(clubamount) end,
"Previous Year"=case when policy.Renewalofferdate between DateAdd(year, -1, @Fromdate)
AND DateAdd(year, -1, @ToDate) then count(clubamount) end,
"#AA"=count(receipts.clubamount),
"$AA"=sum(receipts.clubamount)
FROM Receipts,Policy
where Receipts.Agencyid=Policy.Agentid
group by
Receipts.CompanyNumber1,Receipts.CompanyNumber2,
Receipts.Premium1,Receipts.Premium2,
Receipts.TransactionType,policy.Renewalofferdate,
Receipts.Agencyid
GO
Query plan...
----------------------Query Plan
|--Sort(DISTINCT ORDER BY:([Expr1008] ASC, [Expr1009] ASC, [Expr1010] ASC, [Expr1011] ASC, [Expr1012] ASC, [Expr1013] ASC, [Expr1014] ASC, [Expr1015] ASC, [Expr1016] ASC, [Expr1017] ASC, [Expr1018] ASC, [Expr1019] ASC, [Expr1020] ASC, [Expr1021] ASC, [Ex
|--Compute Scalar(DEFINE:([Expr1008]=Convert([Receipts].[CompanyNumber1])+Convert([Receipts].[CompanyNumber2]), [Expr1009]=[Receipts].[Premium1]+[Receipts].[Premium2], [Expr1010]=If ([Receipts].[TransactionType]='CAN') then ([Receipts].[Premium1]+[R
|--Compute Scalar(DEFINE:([Expr1004]=Convert([Expr1076]), [Expr1005]=Convert([Expr1077]), [Expr1006]=Convert([Expr1078]), [Expr1007]=If ([Expr1078]=0) then NULL else [Expr1079]))
|--Stream Aggregate(GROUP BY:([Receipts].[CompanyNumber1], [Receipts].[CompanyNumber2], [Receipts].[Premium1], [Receipts].[Premium2], [Receipts].[TransactionType], [Policy].[RenewalOfferDate], [Receipts].[AgencyID]) DEFINE:([Expr1076]=COUN
|--Sort(ORDER BY:([Receipts].[CompanyNumber1] ASC, [Receipts].[CompanyNumber2] ASC, [Receipts].[Premium1] ASC, [Receipts].[Premium2] ASC, [Receipts].[TransactionType] ASC, [Policy].[RenewalOfferDate] ASC, [Receipts].[AgencyID] ASC))
|--Hash Match(Inner Join, HASH:([Policy].[AgentID])=([Receipts].[AgencyID]), RESIDUAL:([Policy].[AgentID]=[Receipts].[AgencyID]))
|--Table Scan(OBJECT:([gasInquiry].[dbo].[Policy]))
|--Table Scan(OBJECT:([gasInquiry].[dbo].[Receipts]))
The two tables has number of records as 13349 and 97032.It taking more than 30 mins...
Any way to make it faster...
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Aug 29, 2001
THis is so annoying. I have 3 ADO executes in my program. THe first one creates a view, the second one performs an outer join on that view and returns a result set, the third execute drops the aforementioned view. THe program that is using this is installed on about 200 computers scattered across Germany and Italy, all querying the same MSsql server 7.0. THe queries run quite quick when few users are actively using the program (after hours for example). however in the heat of the day performance goes up and down dramatically with identical queries taking from 1 to 20 seconds to return their result set. Now I initially thought 'bandwidth issue out of our server'. However I noticed that if I take those three queries and run them from the sql server enterprise manager( running on the same computer as the aforementioned program) then the queries run instantly and the data is in my result pane in less than 2 seconds ALWAYS....even when the program is dogging it with 20 second delays before the result set returns. I know it is hanging on the return of the result set as I put a stop after before each ADO execute in order to check which one was eating up my time. Why is there this dichotomy between running the queries from my enterprise manager versus running them from an ADO object. Both are using TCP/IP (no named pipes involved). I havent monkied with the attributes of the ADO result set so they are all set to default.
I have used the sql server profiler to trace these queries and they always run in less than 33 milliseconds. THe duration is also never more than 33 milliseconds. THis stinks of a network resource issue but what always leads me somewhere else is how consistent the performance of the enterprise manager is when it runs the exact same three queries.
Here is my slightly edited connection string
Public Const connection_string = "Provider=SQLOLEDB;Server=000.000.000.000;" & _
"User ID=johndoe;Password=janedoe;Network=dbmssocn;" & _
"database=fidojoe"
Here are the 3 ADO executes:
conn.Execute (sqlstr_create_view)
Set resultset1 = conn.Execute(sqlstr_get_providers_by_DMISID)
conn.Execute (sqlstr_drop_view)
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Feb 19, 2008
Hi Guys,
I've got a stored proc used for order generation which runs long sometimes when called from within our app. A normal run will complete within 20s, a long run will get terminated by the app at the 6 minute mark.
When it runs long once, repeated attempts will also do so until I execute the same query the app did, but from within Query Analyzer. At which time the problem will disappear for a day or two. The app connects to the SQL Server 200 SP4 database using ADO.
I suspected statistics might be at fault here but have tried both "UPDATE STATISTICS table WITH FULLSCAN" and "DBCC DBREINDEX('table') to no avail. This issue has occurred and been worked around in this manner a few dozen times.
Any idea what might be going on here?
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Aug 28, 2004
Yesterday i face a strange SQL Server 2000 behaviour :-(
I had a query that was wrapped inside a stored procedure, as usual.
Suddenly, the stored procedure execution time raised from 9 secs to 80.
So to understand where the problem was i cut and pasted the sp body's into a new query analyzer window an then executed it again. Speed back to 9 secs.
Tried stored procedure again, and speed again set to 80 secs.
Tried to recompile sp. Nothing. Tried to restart SQL Server. Nothing. Tried to DROP & RE-CREATE sp. Done! Speed again at 9 secs.
My collegue asked me "why?", but i had no words. :confused: Do you have any explanation?
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Apr 23, 2007
Hello
DTS is notoriously faster than making the following statement:
insert into synonym_MyRemoteTable
select * from myLocalTable
Why is it so?
Thanks a lot.
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Feb 1, 2008
Let's say I have a table of users.
Let's imagine there's two fields:
username (PK),
password
Now I need to authenticate a user against this table. What is the recommended approach? Is it better / faster to
(1) SELECT * FROM [User]
WHERE username = 'whatever' AND password='whatever'
or
(2) SELECT * FROM [User]
WHERE username = 'whatever'
and then in my code check that the record returned matched the password?
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Aug 10, 2007
It seems when I run the query with the set staticts IO on then statistic reports back with the 'work table', and the query takes 30+ sec. if the worktable is ommited(whatever the reason?) the query take less 1 sec.
Here is my take, I believe work table is created in tempdb...and if not then whole query is using the cached page, am I right?
if I am right then the theory is, if I increase the (via sp_configure) server min memory setting and min query memory, the query ought use the cached page and return in less 1 sec. (specially there is absolutely no one but me on the server), so far I can't make it go faster...what setting am I missing to make it run faster?
Another question is if the query can not avoid but use the tempdb, is it going to always be 30 sec+ time? why is tempdb involvement make it go so much slower?
Thanks in for you help in advance
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Mar 11, 2008
Good afternoon,
i'm new to Functions on the SQL server
I'm trying to create a dynamic query that would select the the column passed to the function from a certain table
my table called selected_Date, and has StartDate, and EndDate columns
when the user select for example "StartDate", i pass this as a variable to the function which runs the query. but i always gets back the passed string as a result..
here is my table
StartDate | EndDate
---------------------
20071231 | 20080306
here is my function knowing that i'm passing "Start" as a variable:
Code:
ALTER FUNCTION tu_efgn_int.Get_StartEndDates(@DateType varchar(10))
RETURNS varchar(8)
AS
BEGIN
DECLARE @vDate varchar(15)
Set @vDate= (Select @DateType + 'Date' From dbo.ps_tbl_SelectedDates)
RETURN @vDate
END
@vDate always returns "StartDate" as result instead of 20071231 why is that ?
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Jan 15, 2008
Hi,
I am running the following MDX query through a DataReader and a Ado.Net Connection.
SELECT
{[Measures].[Deuda Total Nacional],
[Measures].[Deuda Total Nacional Maximo],
[Measures].[Cupo Nacional],
[Measures].[Porcentaje Utilizacion Maximo],
[Measures].[Pago Minimo Estado Cuenta],
[Measures].[Deuda Ultima Facturacion],
[Measures].[Dias Mora],
[Measures].[Dias Mora Maximo],
}
ON COLUMNS
,[Cuenta].[Cuenta].[Cuenta]*[Cuenta].[Rut].[Rut]*[Cuenta].[Dv].[Dv] ON ROWS
FROM [Bd Rtd]
WHERE [Tiempo].[Mes].&[2007-09-01T00:00:00]
The thing is, when I have about 10 thousand rows It runs in about 50 seconds which is good, but when I run this query and I have processed the cube with 100 thousand rows it runs out of memory and crashes.
I'm working in a shared development server with 1GB of memory for my project.
Is there any way to make it run anyway?? I mean even if it has to swap.
thanks
By the way when this thing goes into production it will have 1.5 million rows
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Aug 15, 2007
Hi,
I apologize for the long post but I am trying to give as much information as I can about the steps I've taken to troubleshoot this.
We have a stored procedure that builds a sql statement and executes it using the Execute command. When I execute the stored procedure through query analyzer it takes close to 5 seconds to execute. When I print out the exact same statement and execute it directly in query analyzer as "raw sql", it takes 0.5 seconds - meaning it takes 10 times longer for the code to execute in the stored proc. I altered the stored proc to execute the printed sql instead of building but it still takes the full 5 seconds and there were no changes in the execution plan. This makes me confident that the issue is not caused by the dynamic sql. I've used with recompile to make sure that the stored procedure caches the most recent execution plan. When I compare the execution plans, the stored proc uses a nested loop whereas the raw sql statement uses a hash join. Seeing that, I added the hash hint to the stored proc and doing so brought down the execution time down from 5 secs to 2 secs but still the raw sql statement uses a clustered index whereas the stored proc uses a non-clustered index and that makes the statement 4 times slower. This proves how efficient clustered indexes are over non-clustered ones, but it doesn't help me since, as far as I know, I can't force SQL Server to use the clustered index.
Does anyone know why sql server is generating such an inefficient execution plan for the stored proc compared to the execution plan that it generates when executing the raw sql statement? The only thing I can think of is that some stats are not updated and that somehow throws off the stored proc. But then again, shouldn't it affect the raw sql statement?
Thank you,
Michael Tzoanos
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Jun 30, 2014
I have two servers: one production and one development. There is a third party query that runs on both servers. Yes, the query is poorly tuned - I cannot change it. In production, it runs in 54 minutes. In development, I have tried to let it run for days and it never completes.
Here's what I have tried so far:
Compared the settings of production vs. development. The settings are very similar - the development box is larger, 4 times more memory.
Max degree of parallelism is the same on both boxes.
No compression on both boxes.
The production server is fairly busy, the development server is empty - this is the only process running on it.
Plenty of free disk space.
Updated all statistics on all databases touched by the query on dev.
Indexing is the same on both boxes.
The development box is running MSSQL2012.
The production box is running MSSQL2008R2.
What I've noticed:
The query consumes a massive amount of CPU time.
HUGE number of reads (16 million reads for 10 writes according to sp_WhoIsActive)
Largest wait types are CXPACKET, SOS_SCHEDULER_YIELD and TRACEWRITE respectively.
wait_typesum_wait_time_mspct_wait_timesum_waiting_tasksavg_wait_time_ms
CXPACKET4142765580.7176307423.5
SOS_SCHEDULER_YIELD24146944.7532725530.0
TRACEWRITE19856343.914831338.9
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Aug 29, 2007
I would like to create a query to find what user owns the job. It probably is in the master db, but I wouldn't know where to begin other than that. Telling me how to either change the job owner or create a job through t-sql would also help. Thanks
-Kyle
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Jul 18, 2007
Hi All,
Recently we started using Pass throughs to perofmr large inserts, however we have started to notice that some of these pass throughs are executing twice, and therefore duplicating data.
Is this a known bug, and if not has anyone got any advice on what could be causing it?
We're connecting from Access 2002 (SP6) to SQL Server 2000 Enterprise.
The conenction string / code is as follows :-
Dim cmd As ADODB.Command
Set cmd = New ADODB.Command
Set cmd.ActiveConnection = CurrentProject.Connection
cmd.Properties("Jet OLEDBDBC Pass-Through Statement") = True
cmd.Properties _
("Jet OLEDB*** Through Query Connect String") = _
"ODBC;DSN=" & myDatabaseShort & ";DATABASE=" & myDatabase & ";UID=sa;PWD=" & Left(myDatabaseShort, 4) & ";"
It connects fine. My sql string is a straightforward Insert statement that only executes once via SQL Query Analyzer.
I'm calling the pass through using the following lines of code:-
cmd.CommandText = mysql
cmd.Execute
Can anyone see anything obvious that I'm doing wrong, or is this a known issue?
Cheers
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Jan 8, 2008
Ok, I'll admit right off the bat that I never suspected that I'd ever raise this complaint, much less worry about how to fix the "problem" associated with it!
We're preparing to take a large set of changes (projects) to PeopleSoft Financials from development to test. The code is still somewhat rough, but it has been "desk checked" to ensure that it does what the developers think that it ought to do, and they've blessed it at that point. The code is now moving into the test phase, and the QA team is finding locking/blocking issues that we've never seen in this code before... Sort of a "lock avalanche" where no one process locks for very long, but many of them block one another to the point where applications actually "freeze" while almost never hitting a deadlock.
My solution was to create a "blitzkrieg" query / stored procedure that would periodically sample master.dbo.sysprocesses, master.dbo.sysdatabases, and apply one of the dm_ functions to gather information on locking, blocking, and deadlocking. My procedure runs nicely (it never hangs) and gets about 99.3% of the data that I want.
The problem is that the blasted query / stored procedure runs either too fast or too slow, depending on how you look at it. Because the dm_ function takes a few ms to run, there can be a situation where either a row appears as a false positive or as a missing row because of timing... Either the culprit shows up as a blocker, but by the time the victim spid is evaluated the block has cleared, or the row is skipped and by the time the victim is evaluated the block has occured.
The whole process runs in well under 100 ms when there is nothing to report, and I've never seen it run 200 ms yet under the worst conditions it has faced, so the code is fast... The problem is that I really don't want to try to enforce any kind of locking to resolve the issue, because that locking would impact performance and that is EXACTLY what I do NOT want to do.
Any suggestions?
-PatP
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Jul 23, 2005
I have a query I developed and optimised as well as possible beforeconverting to a view.When running in query analyser the query runs in 15 to 18 seconds -which is acceptable.When "converting" into a view ( This is necessary for operationalreasons) and running with the same parameter it runs in 3 to 4minutes.Is there something I am unaware of ( well of course there is !!) -I was wondering why this occurs and how I can avoid / correct theissue.All advice gratefully received.Dave ( Still learning stuff about SQL Server every day!!)
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Jul 20, 2005
A colleague of mine has a query which fails to run under SQLAgentbatch with the following error:The conversion of a char data type to a datetime data type resulted inan out-of-range datetime value. [SQLSTATE 22007] (Error 242) Thestatement has been terminated. [SQLSTATE 01000] (Error 3621). Thestep failed.He can run the same query sucessfully via query analyzer (i.e. noerrors, and it does what he wants)If I try to run the same query through Query Analyzer on myworkstation, I get a different error altogether:Server: Msg 242, Level 16, State 3, Procedure DateForGrouping, Line 11The conversion of a char data type to a datetime data type resulted inan out-of-range datetime value.Any idea what might be causing these differences in behaviourdepending on how and/or where the query is run from?The (working) statement in question is:================================================== ======================insert into Summary_ReferrerSalesselect DateCreated,ReferrerID,ReferrerIDCount,PUIDCount,ReferrerDescription,0 as TotalOrderValue,0 as TotalOrderLinesfrom vw_ReferrerPopularityWarning: Null value is eliminated by an aggregate or other SEToperation.(11996 row(s) affected)================================================== ====================And the table / view / function definitions (I take no responsibilityfor the view definition!) are:CREATE TABLE [Summary_ReferrerSales] ([DateCreated] [datetime] NULL ,[ReferrerID] [char] (2) NULL ,[ReferrerIDCount] [int] NULL ,[PUIDCount] [int] NULL ,[ReferrerDescription] [nchar] (100) NULL ,[TotalOrderValue] [numeric](18, 0) NULL ,[TotalOrderLines] [numeric](18, 0) NULL) ON [PRIMARY]CREATE VIEW dbo.vw_ReferrerPopularityASSELECT TOP 100 PERCENT COUNT(dbo.LogReferrerID.Referrer) ASReferrerIDCount,COUNT(DISTINCT dbo.LogReferrerID.PUID) AS PUIDCount,dbo.DateForGrouping(dbo.LogReferrerID.DateUsed)AS DateCreated,dbo.LogReferrerID.Referrer AS ReferrerID,dbo.LookupReferrerID.ReferrerDescriptionFROMdbo.LogReferrerID INNER JOIN dbo.LookupReferrerIDON dbo.LogReferrerID.Referrer = dbo.LookupReferrerID.ReferrerIDWHERE (dbo.LogReferrerID.DateUsed > CONVERT(DATETIME, '2003-09-0100:00:00', 102))GROUP BY dbo.LogReferrerID.Referrer,dbo.DateForGrouping(dbo.LogReferrerID.DateUsed),dbo.LookupReferrerID.ReferrerDescriptionHAVING (dbo.LogReferrerID.Referrer <> 'WS')AND (COUNT(dbo.LogReferrerID.Referrer) IS NOT NULL)AND (dbo.LookupReferrerID.ReferrerDescription IS NOT NULL)AND (dbo.DateForGrouping(dbo.LogReferrerID.DateUsed) >CONVERT(DATETIME, '2003-09-01 00:00:00', 102))AND (COUNT(DISTINCT dbo.LogReferrerID.PUID) IS NOT NULL)ORDER BY dbo.DateForGrouping(dbo.LogReferrerID.DateUsed) DESCCREATE TABLE [LogReferrerID] ([LogReferrerID] [int] NULL ,[Referrer] [varchar] (2) NULL ,[DateUsed] [smalldatetime] NULL ,[HTTPReferrer] [varchar] (1000) NULL ,[TargetURL] [varchar] (1000) NULL ,[QueryString] [varchar] (1000) NULL ,[PUID] [varchar] (50) NULL) ON [PRIMARY]CREATE TABLE [LookupReferrerID] ([ReferrerID] [char] (2) NOT NULL ,[ReferrerDescription] [varchar] (100) NOT NULL ,CONSTRAINT [PK_Lookup_ReferrerID] PRIMARY KEY CLUSTERED([ReferrerID]) ON [PRIMARY]) ON [PRIMARY]CREATE FUNCTION dbo.DateForGrouping (@RowDate datetime)RETURNS datetime ASBEGINdeclare @datestring char(10)set @datestring=cast(datepart(dd,@RowDate) as char(2)) + '/' +cast(datepart(mm,@RowDate) as char(2)) + '/' +cast(datepart(yyyy,@RowDate) as char(4))return cast(@datestring as datetime)END
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Dec 14, 2007
Hi all,
I know this sounds rather dumb but my select statement is running forever!
I am trying to execute the statement through my C# code.
If I try to run the query through sql server management studio, sometimes it runs fine, but sometimes it keeps running and never returns a value.
I am doing something like this:
###########################################################################################
String query = "SELECT studentID from StudentTable WHERE studentDeptID = '100' AND deptName = 'CS'";
SqlCommand command = new SqlCommand(query, connection);
Object myObject = command.ExecuteScalar();
############################################################################################
StudentTable contains roughly 1000 rows.
Somebody please help me out of this. Thanks in advance.
Surya
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Mar 8, 2007
This is in ASP.NET 1.1. I have a performance problem with a webform. The form contains several bound fields and a couple datagrids. I fill the grids by creating a data adapter, then I use the adapter to fill a dataset, then I set the grid datasource to the dataset.
The query to fill one of the grids is getting a SQL timeout when running from my application (it takes about 40 seconds to complete). When I run the same SQL code from SQL Query Analyzer it runs in less than 1 second. (it is embedded sql in the app, not a stored procedure).
I suspect that something else is being requested from SQL during the postback that is causing a blocking issue or something but I can't tell exactly what is happening. I've tried tracing through the code and all that I can tell is that the timeout occurs during the dataadapter.fill command.
Has anyone else seen something similar? Is there a good way for me to see what SQL commands are being executed from ASP.NET? Any advice on debugging this would be much appreciated.
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May 5, 2007
We're on SQL 2005 SP1, IIS6, ASP.NET 2.0Data access is 3 tier (.xsd, BLL) similar to the data tutorials.From SQL Profiler:ASP.NETexec dbo.SpGetCatalogCategories @Show='Children',@ServiceId=31016,@BrandId=NULL,@CategoryId=NULL,@ParentId=10028,@ApplicationId=NULL,@ShowUniversal=1Event Class: RPC:Completed CPU: 5,109Reads: 613,174Writes: 0Duration: 5,133Management Studioexec dbo.SpGetCatalogCategories @Show='Children',@ServiceId=31016,@BrandId=NULL,@CategoryId=NULL,@ParentId=10028,@ApplicationId=NULL,@ShowUniversal=1Event Class: SQL:BatchCompletedCPU: 407Reads: 2,182Writes: 0Duration: 409I can post the SP if it will help.This is in a production enviroment and any help is greatly appreciated.kyle
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