Very Slow Running Update Query Query
Nov 19, 2004
I have an update query running which to just now has been running for 22 hours running on two tables 1 a lookuptable that has just been created within the batch the other a denormalised table for doing data analysis on
the query thats causing teh problem is
--//////////////////////////////////// this is the one thats running
Print 'Update Provider 04-05 EmAdmsCount12mths : ' + CAST(GETDATE() AS varchar)
GO
Update Provider_APC_2004_05
set EmAdmsCount12mths =
(Select COUNT(*)-1
from Combined_Admissions
where ((Combined_Admissions.NHSNumber = Provider_APC_2004_05.NHSNumber) or
(Combined_Admissions.PASNUMBER = Provider_APC_2004_05.PDDISTNO)) and
(Combined_Admissions.AdmDate BETWEEN DateAdd(yyyy,-1,Provider_APC_2004_05.AdmDate) AND Provider_APC_2004_05.AdmDate) AND
Combined_Admissions.AdmMethod like 'Emergency%')-- and
-- CA.NHSorPrivate = 'NHS'))
FROM Provider_APC_2004_05, Combined_Admissions
any help in improving speed would be most welcome as there are 3 more of these updates to run right after this one and the analysis tables are almost double the size of this one
Dave
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Apr 17, 2008
Hi all,
I'm having what you might call an optimisation issue - but I'm also not sure if my approach to this problem is right. I've spent the whole day trying various methods but none seem to be performing as admirably as I'd hoped.
Basically, here's the scenario:
1. Log files are being inserted into a SQL table via Log Parser 2.2.
2. I have a lookup table of ip address ranges to countries and other geographic data.
3. Once the log row has been inserted from Log Parser, I want to update the same log table with data from the lookup table.
The main problem seems to be the updating (the initial insert from Log Parser is lightning quick).
I initially wrote a trigger on AFTER INSERT on the log table that converted the actual user's IP address into IPNumber format using a simple algorithm, then pumped the IPNumber into a quick select query which retrieved the geolocation data. Then, in the same trigger, there was an update statement which basically said:
update dbo.Logs
set [Country] = @Country
where [IpNumber] = @IpNumber and [Country] = Null
Therein lies the problem. The update statement slows everything down to almost a standstill and also seems to obtain a lock on the table.
Critical factors:
1. The log table must remain readable.
2. The query must execute in seconds -- not over half hour :)
I've experimented with various combinations of indexing, so far to no avail.
Any suggestions would be very much appreciated.
Regards
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Aug 24, 2007
hi
if suppose one query is running slow than what steps we can follow to optimize it...
this question is asked me in interview.
thanx
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Aug 27, 2007
I have a SELECT TOP query in order to return x number of top records from a table which has the indexing service enabled on it, such as this :
SELECT TOP(15) * FROM [TableName] ORDER BY [ColumnName]
and also there are not that many records(MAX 100 rows) kept in the table at the moment however, it will grow later.
The issue stems out from the ORDER BY [ColumnName] part of the syntax that changes the TOP selection order which makes the query to run very slow as I have also analyzed in the SQL SERVER QUERY ANALYZER.
Anyhow, I need to have the ORDER BY statement to show the data based on different columns either ascending or descending.
There might we workarounds to achieve the same goal that I am not aware of.
Any thoughts is appreciated.
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Jun 1, 2007
we had some slow down complaints lately and this query seems to be the culprit almost every single time. The estimated execution plan is a clustered index seek as there is a clustered index on the uidcustomerid column. setting profile statistics on shows that every time it executes it does an index seek.
profiler session showed a huge number of reads for these queries depending on the value being looked up. 1500 through 50000. i set up profile io on and the culprit is lob logical reads. everything else is 0 or very low. in this case lob logical reads is over 1700.
3 of the columns in the select statement are text columns. when i take them out of the query the lob logical reads drops to 0 and goes up incrementally as i add each column back in.
is there anyway to improve the performance without changing data types to varchar(max)?
select SID,Last_name,Name_2,First_name,Middle_initial,Descriptives,Telephone_number,mainline,Residence,ADL,
DID_number,Svce_street,Svce_town,Svce_state,Svce_appt,Mailing_street,Mailing_town,Mailing_state,Mailing_appt,
Mailing_zip,Listing,Addl_listing,Published,Listed,Gold_number,PIN,status,SSnumber,tax_jurisdiction,
Bill_date,Past_balance,Service_start_date,Service_end_date,LOA,FCC_type,Line_type,I_W,Jacks,Voice_messaging,
vms_ring_cycles,CCS,phonesmarts,ringmate,voice_dialing,Bill_detail,Contact_Number,Contact_extension,
Best_Time,suspend,suspend_start,suspend_end,credits_allowed,credits_granted,home_region,Calling_Plan,Local_Plan,
Local_Plan_Rate,Flat_Rate,Sales_agent,Community,Building_Mgmt,How_Heard,Incentive_1,Incentive_1a,Incentive_1b,
Incentive_1c,Incentive_2,Incentive_2a,Incentive_2b,Incentive_2c,Incentive_3,Incentive_3a,Incentive_3b,
Incentive_3c,block_operator,block_collect,block_group,block_adult,block_call_return,block_repeat_dialing,
block_call_trace,block_caller_id,block_anonymous,block_all_high_toll,block_regional_and_ld,block_DA_Call_Completion,
block_DA,block_3rd_party,bank,prepayment,dial_around_number,custid,waive_interest,Financial_Treatment,
Other_Feature_1_code,Other_Feature_1_rate,Other_Feature_2_code,Other_Feature_2_rate,Other_Feature_3_code,
Other_Feature_3_rate,Other_Feature_4_code,Other_Feature_4_rate,Partial_Account,mail_date,snp_1_date,snp_2_date,
terminate_date,snp1notified,snp1peak,snp1offpeak,snp2notified,snp2peak,snp2offpeak,avg_days_paid,Pulled_Ld,SNP1,
SNP2,Treatment,Collections,Installment,Nynex_BTN,LD_rate,local_discount,to_month,rounds_up,full_package_made,
local_made,PIC,LPIC,tax_exempt_local,tax_exempt_federal,CommissionedAgent,LDRateID,UidCustomerId,
accVchLineClassUSOC,block_Inter_Reg_LD,block_international,block_DA_3rd_Collect,block_DH2,block_ISP_2,block_ISP_3,
block_ISP4_3_GBAS,block_ISP3_3_GBAS,block_collect_only,block_LD_Reg_DA,block_usage_based,block_ISP5_3_GBAS,
block_ISP5_2_GBAS,block_group_adult,csr_PIC,csr_LPIC,csr_SA,csr_exception,cutover_status,cutover_datetime,
OutsideAgent,prfVchAttributes,uidResellerID,Category,uidDealID
from profiles where UidCustomerID in (352199267)
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Jun 26, 2007
Hi,
I have a report in SQL Reporting Services 2005 which calls a stored proc and the report takes a very long time to run and sometimes returns zero records. But when i run the stored proc in query analyzer it takes about 4 seconds!!
I have checked the execution log on the RS using the below sql:
Code Snippet
use ReportServer
Select * from ExecutionLog with (nolock) order by TimeStart DESC
It shows that i have a large amount of time for the dataretrieval (601309ms, about 10mins) and does not return any records most likely because of a query timeout:
TimeDataRetrieval TimeProcessing TimeRendering Source Status ByteCount RowCount
601309 2227 3 1 rsSuccess 4916 0
The weird thing is that when i run it in query analyzer, i get about 400 records in 4 seconds !!
I dont understand what RS is doing to take up so much time like this to retrieve data.
The report is very simple - it basically returns the records straight out into a table.
The only thing I somewhat suspected was a parameter data type conflict between RS and SQL, specifically dates. I have a start and end date parameter in the report - i tried specifying this as date and string to see if it made any difference but it didn't.
Any help would be greatly appreciated.
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Dec 4, 2014
I have a database with enabling merge replication.
Then the problem is update query is taking more time.
But when I disable the merge triggers then it'll update quickly.
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Dec 3, 2014
I have a database with enabling merge replication.
Then the problem is update query is taking more time.But when I disable the merge triggers then it'll update quickly.
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Jan 18, 2008
My DataAdapter.Update() Method is running this query against my database and all the parameters and the formatting looks correct to me. I was wondering if anyone could identify obvious errors.... Thanks!
exec sp_executesql
N'NewUpdateCommand',
N'@Name nvarchar(50),
@PriContactFName nvarchar(50),
@PriContactLName nvarchar(50),
@PriContactWork nvarchar(20),
@PriContactFax nvarchar(20),
@PriContactCell nvarchar(20),
@PriContactEmail nvarchar(50),
@MainOfficeLocationAddr1 nvarchar(50),
@MainOfficeLocationAddr2 nvarchar(50),
@MainOfficeLocationCity nvarchar(50),
@MainOfficeLocationState nvarchar(50),
@MainOfficeLocationZip nvarchar(15),
@Description nvarchar(50),
@Original_ClientID int,
@ClientID int',
@Name=N'Brinker International',
@PriContactFName=N'Steves',
@PriContactLName=N'Maubley',
@PriContactWork=N'913-876-9876',
@PriContactFax=N'913-098-8765',
@PriContactCell=N'913-987-7654',
@PriContactEmail=N'a@b.c',
@MainOfficeLocationAddr1=N'1234 Burkwood',
@MainOfficeLocationAddr2=NULL,
@MainOfficeLocationCity=N'Tallahassee',
@MainOfficeLocationState=N'Florida',
@MainOfficeLocationZip=N'99111',
@Description=N'This is a good client.',
@Original_ClientID=1,
@ClientID=1
Msg 102, Level 15, State 1, Line 15
Incorrect syntax near 'NewUpdateCommand'.
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Jun 7, 2004
The following basic UPDATE SQL statement has been running for 16 hours and counting. I need to get this done ASAP.
UPDATE Recipients SET UndeliverableTime = getdate()
FROM Recipients
INNER JOIN Domains ON (Recipients.DomainID = Domains.ID)
INNER JOIN Undeliverables ON (
Recipients.UserName + '@' + Domains.Domain =
Undeliverables.EmailAddress)
Is there any way I can see how far this has gone and how long it will take to finish? Will this take another hour to finish or another week?
Both tables (Recipients and Undeliverables) have approximately 80 million records
I did a nearly identical operation with another table that had only 7 million records and it took 10.5 hours. I hope this doesn't scale linearly to 115 hours.
I am tempted to cancel, retune, and rerun but that may be trigger a really expensive rollback operation that could take days. Any ideas?
thanks!
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Jul 20, 2005
am using FOR UPDATE triggers to audit a table that has 67 fields. Myproblem is that this slows down the system significantly. I havenarrowed down the problem to the size (Lines of code) that need to becompiled after the trigger has been fired. There is about 67 IFUpdate(fieldName) inside the trigger and a not very complex selectstatement inside the if followed by an insert to the audit table. WhenI leave only a few IF-s in the trigger and comment the rest of thecode performance increased dramatically. It seems like it is checkingevery single UPdate() statement. Assuming that this was slowing downdue to doing a select for every update i tried to do to seperateselects in the beginning from Deleted and Inserted and assigningcolumns name to specific variables and instead of doingif Update(fieldName) i didif @DelFieldName <> @InsFieldNamebeginINSERT INTO AUDITSELECT WHAT I NEEDENDThis did not improve performance. If you have any ideas on how to getaround this issue please let me know.Below is an example of what my triggers look like.------------------------------------Trigger 1 -- this was my original designCREATE trigger1 on TableFOR UPDATEASif update(field1)begininsert into AuditSELECT What I needENDif update(field2)begininsert into AuditSELECT What I needEND...... Repeated about 65 more timesif update(field67)insert into AuditSELECT What I needEND---------------------------------------------------------------------------Trigger 2 -- this is what i tried but did not improve performanceCREATE trigger2 on TableFOR UPDATEASDeclare @DelField1 varcharDeclare @DelField2 varchar....Declare @DelField67 varcharSelect@DelField1 = Field1,@DelField2 = Field2,....@DelField67 = Field67From DeletedDeclare @InsField1 varcharDeclare @InsField2 varchar....Declare @InsField67 varcharSelect@insField1 = Field1,@insField2 = Field2,....@InsField67 = Field67From Inserted-- I do not do if Update() but instead compare variablesif @DelField1 <> InsField1beginInsert into AUDITSELECT what I needendif @DelField2 <> InsField2beginInsert into AUDITSELECT what I needend............if @DelField67 <> InsField67beginInsert into AUDITSELECT what I needend----------------------------------------------IF you have any idea how to optimize this please let me know. Anyinput is greatly appreciated. I do not have a problem with triggersdoing what they are supposed to, they are very slow this is myconcern. The reason I gave you two examples is because i suspect ithas something to do with the enormouse amount of code inside thetrigger. both examples perform about the same whether i use the twohuge selects from the Inserted and Deleted or not.Thanks,Gent
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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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Sep 25, 2006
Hi there
Running query analyzer against two different server.
the first only need 1-2 secs to return the query result,
the other return 7-8 secs for the query result.
plz advice what could cause this slow performance?
thx
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Apr 9, 2006
I hope I am not asking about something that has been done before, but Ihave searched and cannot find an answer. What I am trying to do is torun a query, and then perform some logic on the rowcount and thenpossibly display the result of the query. I know it can be done withADO, but I need to do it in Query Analyzer. The query looks like this:select Varfrom DBwhere SomeCriteriaif @@Rowcount = 0select 'n/a'else if @@Rowcount = 1select -- this is the part where I need to redisplay the resultfrom the above queryelse if @@Rowcount > 1-- do something elseThe reason that I want to do it without re-running the query is that Iwant to minimize impact on the DB, and the reason that I can't useanother program is that I do not have a develpment environment where Ineed to run the queries. I would select the data into a temp table, butagain, I am concerned about impacting the DB. Any suggestions would begreatly appreciated. I am really hoping there is something as simple as@@resultset, or something to that effect.
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Jul 8, 2013
I have 2 requests for desperate Hélio..
1) is there any way to run a query over a query without having to create a table with the results of the first query? (would drop table work? If so, how?
2) how can i define input variables the same way i do in excel? I am trying to run a couple of simulations based on 2 core inputs (in excel i would just do a data table)
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Sep 1, 2006
If I start a long running query running on a background thread is there a way to abort the query so that it does not continue running on SQL server?
The query would be running on SQL Server 2005 from a Windows form application using the Background worker component. So the query would have been started from the background workers DoWork event using ado.net. If the user clicks an abort button in the UI I would want the query to die so that it does not continue to use sql server resources.
Is there a way to do this?
Thanks
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Mar 30, 2006
Hello, I have the following query in Access 2000 that I need to convertto SQL 2000:UPDATE tblShoes, tblBoxesSET tblShoes.Laces1 = NullWHERE (((tblShoes.ShoesID)=Int([tblBoxes].[ShoesID])) AND((tblBoxes.Code8)="A" Or (tblBoxes.Code8)="B"))WITH OWNERACCESS OPTION;The ShoesID in the tblShoes table is an autonumber, however the recordsin the tblBoxes have the ShoesID converted to text.This query runs ok in Access, but when I try to run it in the SQLServer 2000 Query Analizer I get errors because of the comma in the"UPDATE tblShoes, tblBoxes" part. I only need to update the tblShoesfield named Laces1 to NULL for every record matching the ones in thetblBoxes that are marked with an "A" or an "B" in the tblBoxes.Code8field.Any help would be greatly appreciated.JR
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Mar 8, 2007
This sounds like a pretty easy one. I have a SQL 2000 database with 2-3.4GHZ CPUs and 1GB of RAM. I have one database on it. I go in Query Analyzer on another machine and run a simple query like 'SELECT * FROM USERS' which should return 15,000 rows.
IT takes 30 (thirty) seconds to finish this query. OMG
Where do I start to decipher why on Earth this takes more than .01 seconds?
Thanks.
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Mar 16, 2001
Hi,
I have a query which has suddenly started responding slow.
CAn anyone tell me what could be the possibilities?
I tried update stats(I am on sql 70-though it's done auto but i did it manually again)
I used union all in place of union but had no big effect.any othe thought?
Thanks!
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Oct 12, 2000
Hi,
I have a query that takes minutes to execute, even through there are about 300,000 records are being processed. I would appreciate any help with optimizing that query.
I have two tables: User and Usage. Table user has two fields: User_Id and Date_Created and a non-clustered index on User_Id. Table usage has two fields also: User_Id and Date_Used and non-clustered index on both fields. The User table is populated when the user registers. The Usage table is populated every time the user opens a document.
Here is what I need to do: get the number of users from the Usage table who opened a document at least once after they have registered during the last 30 days for each day in the time frame, where the time frame varies.
For example, if the time frame is 8/01/00 - 8/31/00, I need to get the following data:
date returns
---- -------
8/01/00 10 (10 users returned to the document between 7/2/00 and 8/1/00)
8/02/00 15 (15 users returned between 7/3/00 and 8/02/00)
.
.
.
8/31/00 20 (20 users returned between 8/1/00 and 8/31/00)
Here is my query:
SELECT [date],
(SELECT count(distinct user_id)
FROM usage u JOIN [user] ON u.[user_id] = [user].[user_id]
WHERE u.[date] BETWEEN usage.[date]-30 AND usage.[date]
AND u.[date]>[user].date_created
GROUP BY usage.[date])returns
FROM usage
WHERE [date] BETWEEN @date1 AND @date2
This query works fine, but too slow. We use MS SQL server 7.0.
Thank you,
Yana
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Dec 2, 2002
I have a query which responds immediately when run however if I add an order by clause it takes 40 seconds. Below is the query with the order by clause
SELECT distinct Licenseplate, platetypecode.platetypecode, platetypecode.platetypecodeid
FROM Ticket INNER JOIN PlateTypeCode
ON PlateTypeCode.PlateTypeCodeID = Ticket.PlateTypeCodeID
ORDER BY licenseplate
The Ticket table contains approx. 11,000 records. I have created a nonclustered index for the licenseplate field, a 7 char varchar field.
Any suggestions for speeding up the query?
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Jun 15, 2004
The following query is causing some problems because it's taking too long to complete. I looked at the estimated execturion plan and I am unsure why it appears to spend over 50% of its time doing a 'Bookmark Lookup' on on particular column (SRA_SR_ID in the S_EVT_ACT table). There is an index on the column - S_EVT_F14. I'm not sure if the query is using the index properly. What can be done to specifically improve this particular problem? In general, does anyone have some suggestions for optimizing the query as a whole?
Thanks in advance. Clive
SELECT
T1.APPT_REPT_FLG,
T18.X_ALIS_ID,
CONVERT (VARCHAR (10),T1.APPT_START_TM, 101) + ' ' + CONVERT (VARCHAR (10),T1.APPT_START_TM, 8),
T1.ASGN_USR_EXCLD_FLG,
T2.NAME,
T19.STAT_CD,
T1.APPT_REPT_TYPE,
T15.NAME,
CONVERT (VARCHAR (10),T1.TODO_ACTL_END_DT, 101) + ' ' + CONVERT (VARCHAR (10),T1.TODO_ACTL_END_DT, 8),
T1.TODO_CD,
T1.X_DOC_CAT_ID,
CONVERT (VARCHAR (10),T1.TODO_PLAN_START_DT, 101) + ' ' + CONVERT (VARCHAR (10),T1.TODO_PLAN_START_DT, 8),
T1.TARGET_OU_ID,
T7.ZIPCODE,
T3.ZIPCODE,
T9.EXP_RPT_NUM,
T1.LAST_UPD_BY,
T1.OWNER_PER_ID,
T1.PART_RPR_ID,
T1.RATE_LST_ID,
CONVERT (VARCHAR (10),T1.APPT_REPT_END_DT, 101) + ' ' + CONVERT (VARCHAR (10),T1.APPT_REPT_END_DT, 8),
T1.ACTIVITY_UID,
T4.NAME,
T1.PR_TMSHT_LINE_ID,
T18.LAST_NAME,
T7.ADDR,
T18.SEX_MF,
T1.BILLABLE_FLG,
CONVERT (VARCHAR (10),T1.TODO_PLAN_END_DT, 101) + ' ' + CONVERT (VARCHAR (10),T1.TODO_PLAN_END_DT, 8),
T1.SRA_SR_ID,
T1.TARGET_PER_ADDR_ID,
T18.X_FST_NAME,
T1.EVT_STAT_CD,
CONVERT (VARCHAR (10),T1.X_SCAN_DATE, 101) + ' ' + CONVERT (VARCHAR (10),T1.X_SCAN_DATE, 8),
T1.ROW_STATUS,
T1.ACD_CALL_DURATION,
T5.NAME,
T8.FAX_PH_NUM,
T8.X_FST_NAME,
T8.LAST_NAME,
T1.MODIFICATION_NUM,
T1.X_CAMP_ID,
CONVERT (VARCHAR (10),T1.X_SCAN_TIME, 101) + ' ' + CONVERT (VARCHAR (10),T1.X_SCAN_TIME, 8),
T1.ASSOCIATED_COST,
T13.NAME,
CONVERT (VARCHAR (10),T1.LAST_UPD, 101) + ' ' + CONVERT (VARCHAR (10),T1.LAST_UPD, 8),
T17.TMSHT_NUM,
T1.PR_SYMPTOM_CD,
T1.OPTY_ID,
CONVERT (VARCHAR (10),T18.BIRTH_DT, 101) + ' ' + CONVERT (VARCHAR (10),T18.BIRTH_DT, 8),
T1.PR_EXP_RPT_ID,
CONVERT (VARCHAR (10),T1.APPT_START_DT, 101) + ' ' + CONVERT (VARCHAR (10),T1.APPT_START_DT, 8),
T8.FST_NAME,
T16.SR_NUM,
T1.SRA_DEFECT_ID,
T1.CREATED_BY,
T8.WORK_PH_NUM,
CONVERT (VARCHAR (10),T1.COST_EXCH_DT, 101) + ' ' + CONVERT (VARCHAR (10),T1.COST_EXCH_DT, 8),
T1.CALL_ID,
T1.X_CLIENT_ID,
T1.PROJ_ID,
T12.DEFECT_NUM,
T1.CREATOR_LOGIN,
T1.CONFLICT_ID,
T19.OUTCOME_CD,
T1.TEMPLATE_FLG,
T2.PR_ADDR_ID,
T1.PREV_ACT_ID,
T1.X_DOC_NAME,
T1.EXP_RLTD_FLG,
T1.X_BATCH_REF,
T1.PRI_LST_ID,
T1.SRC_ID,
T1.X_POLICY_REF,
CONVERT (VARCHAR (10),T1.CREATED, 101) + ' ' + CONVERT (VARCHAR (10),T1.CREATED, 8),
T1.EMAIL_FORWARD_FLG,
T11.DMT_NUM,
T1.TMSHT_RLTD_FLG,
T1.ROW_ID,
T10.NAME,
T18.CONSUMER_FLG,
T1.TARGET_PER_ID,
T18.FST_NAME,
T1.PRIV_FLG,
T3.PROVINCE,
T8.X_ALIS_ID,
T8.JOB_TITLE,
T14.NAME,
T1.NAME,
T1.PCT_COMPLETE,
T1.SRA_TYPE_CD,
T1.ALARM_FLAG,
T1.CAL_DISP_FLG,
T1.EVT_PRIORITY_CD,
T1.COST_CURCY_CD,
T2.LOC,
CONVERT (VARCHAR (10),T1.TODO_ACTL_START_DT, 101) + ' ' + CONVERT (VARCHAR (10),T1.TODO_ACTL_START_DT, 8),
T20.FILE_NAME,
T1.SRA_RESOLUTION_CD,
T6.PRDINT_ID,
T1.OWNER_LOGIN
FROM
dbo.S_EVT_ACT T1
LEFT OUTER JOIN dbo.S_ORG_EXT T2 ON T1.TARGET_OU_ID = T2.ROW_ID
LEFT OUTER JOIN dbo.S_ADDR_ORG T3 ON T2.PR_ADDR_ID = T3.ROW_ID
LEFT OUTER JOIN dbo.S_PRI_LST T4 ON T1.PRI_LST_ID = T4.ROW_ID
LEFT OUTER JOIN dbo.S_PRI_LST T5 ON T1.RATE_LST_ID = T5.ROW_ID
LEFT OUTER JOIN dbo.S_ACT_PRDINT T6 ON T1.ROW_ID = T6.ACTIVITY_ID
LEFT OUTER JOIN dbo.S_ADDR_PER T7 ON T1.TARGET_PER_ADDR_ID = T7.ROW_ID
LEFT OUTER JOIN dbo.S_CONTACT T8 ON T1.TARGET_PER_ID = T8.ROW_ID
LEFT OUTER JOIN dbo.S_EXP_RPT T9 ON T1.PR_EXP_RPT_ID = T9.ROW_ID
LEFT OUTER JOIN dbo.S_OPTY T10 ON T1.OPTY_ID = T10.ROW_ID
LEFT OUTER JOIN dbo.S_PART_RPR T11 ON T1.PART_RPR_ID = T11.ROW_ID
LEFT OUTER JOIN dbo.S_PROD_DEFECT T12 ON T1.SRA_DEFECT_ID = T12.ROW_ID
LEFT OUTER JOIN dbo.S_PROD_INT T13 ON T6.PRDINT_ID = T13.ROW_ID
LEFT OUTER JOIN dbo.S_PROJ T14 ON T1.PROJ_ID = T14.ROW_ID
LEFT OUTER JOIN dbo.S_SRC T15 ON T1.SRC_ID = T15.ROW_ID
LEFT OUTER JOIN dbo.S_SRV_REQ T16 ON T1.SRA_SR_ID = T16.ROW_ID
LEFT OUTER JOIN dbo.S_TMSHT_LINE T17 ON T1.PR_TMSHT_LINE_ID = T17.ROW_ID
LEFT OUTER JOIN dbo.S_CONTACT T18 ON T1.X_CLIENT_ID = T18.ROW_ID
LEFT OUTER JOIN dbo.S_CAMP_CON T19 ON T1.X_CAMP_ID = T19.SRC_ID AND T1.TARGET_PER_ID = T19.CON_PER_ID
LEFT OUTER JOIN dbo.S_ACTIVITY_ATT T20 ON T1.ROW_ID = T20.PAR_ROW_ID
WHERE
((T1.APPT_REPT_FLG != 'Y' OR T1.APPT_REPT_FLG IS NULL) AND
(T1.TEMPLATE_FLG != 'Y' AND T1.TEMPLATE_FLG != 'P' OR T1.TEMPLATE_FLG IS NULL)) AND
(T1.SRA_SR_ID = '1-EQLOO')
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Oct 12, 2006
I have a query that is taking too long to run. It take 14 seconds to return 6800 rows. However, if I move the query out of a stored proc, it takes 1 second. I want to understand this issue and ideally fix the stored proc case.
I've simplified my actual queries for readability.
-- @filter is value to filter against or NULL to return all records.
CREATE PROCEDURE queryPlayerStations(@filter INTEGER)
AS
SELECT * FROM MyTable
-- Other joins and query logic omitted for brevity
WHERE ((@filter IS NULL) OR (MyTable.Column = @filter))
GO
DECLARE @filter INTEGER
SET @filter = NULL
-- Takes 14 seconds to return 6800 rows. That's unacceptable performance
EXEC dbo.queryPlayerStations @filter
When I run the query directly in Query Analyzer, it runs very fast.
DECLARE @filter INTEGER
SET @filter = NULL
-- Takes ~1 second to return 6800 rows. That's great performance
SELECT * FROM MyTable
-- Other joins and query logic omitted for brevity
WHERE ((@filter IS NULL) OR (MyTable.Column = @filter))
When I put the parameters in the stored proc it runs fast.
CREATE PROCEDURE queryPlayerStations
AS
DECLARE @filter INTEGER
SET @filter = NULL
SELECT * FROM MyTable
-- Other joins and query logic omitted for brevity
WHERE ((@filter IS NULL) OR (MyTable.Column = @filter))
GO
-- Takes ~1 second to return 6800 rows. That's great performance
EXEC dbo.queryPlayerStations
Anyone have any ideas what I can do to improve the stored proc case?
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Mar 27, 2008
Hi guys/gals
I have only just signed up, as I have a problem thats confusing me a lot
I have a page (classic asp - sadly) that displays a list of invoices for a certain customer
Each of these customers has fairly complex permissions system, but the page generates a list of invoices and values in 0.01 seconds
However in the while...do loop, for each invoice it checks a database table for "extra charges"..
This is a simple SQL query
"Select Sum(amount) from extra_charges where invoice_number=" & current_invoice_number
However each time it runs this simple select statement it takes 2 seconds - which causes the page to load in 70 seconds instead of 0.01
I am absolutely beyond confused. I have tried it in a stored procedure, and a direct ado query..
The table by the way is empty on my current test system, and one one other system has about 150 records in it. Both take the same time
Any help would be appreciated?
This is a MSSQL 2000 database I've inherited, I am usually a PHP/MYSQL developer - so im a little out of my field of expertise here
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May 26, 2004
i want to have a like search in the following query.
SELECT DISTINCT TOP 200 a.AccountID,
a.AccountNumber,
c.CLI,
con.SurName,
addr.Address1 [Account Address],
addr.Postcode as [Account Postcode],
atp.Name AS Type,
cs.Code AS Status
FROM account_t a
INNER JOIN customer_t cust on a.customerID = cust.CustomerID
INNER JOIN AccountType_T atp on cust.AccountTypeID = atp.AccountTypeID
INNER JOIN CustomerStatus_T cs ON a.CustomerStatusID = cs.CustomerStatusID
INNER JOIN Contacts_T con on cust.MasterContactID = con.ContactID
INNER JOIN Address_T addr ON cust.MasterAddressID = addr.AddressID
LEFT OUTER JOINCLI_T c ON a.AccountID = c.AccountID
WHERE (c.CLI LIKE @CLI + '%')
AND (con.SurName LIKE @Surname + '%')
AND (addr.Address1 LIKE @Address + '%')
AND (REPLACE(addr.Postcode, ' ', '') LIKE @Postcode + '%')
AND c.DateArchived IS NULL
here all fields @CLI, @Surname, @Address, @Postcode are varhcar types...which is making this query very slow...is there any suggestion to improve this query?
thanks in advance
bhavya
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Mar 18, 2008
When I want to display the total records (#) in a webpage, it is very slow. When I try to remove the total records and show them per 20s, it responds very fast.
Any ideas?
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Sep 13, 2006
What might be going on here? The Query is against a single table withsome criteria. The database is active with upto 200 connected usersand at peak times there are 10 or more active sessions. Most of thetime, the query comes back in milliseconds. Occasionally though, it itcan take a whole minute. I've been watching CPU, Memory, Disk. Noneof these appear to be the bottlenecking. (CPU usually below 10% andalways below 50%, pages/sec is 0, and disk % is low and does notspikes during hangs) I also checked to see if hangs were synching withTlog backups or other scheduled jobs, but that is not the case. Thebox has good hardware 4GB RAM and 2 CPU at 3.4 GHz. What could beholding this query up?Thanks for any ideas.Dave
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Jul 20, 2005
This UNION query is very slow. With only 3,000 records in the Parent tableand 7,000 records in the Child table, it takes about 60 seconds to run andreturns about 2200 records.Any ideas on speeding it up? Thanks.-- PART 1: HAS NO CHILD RECORDSSELECT P.PROJECT_ID, 'No Child Data' AS SUB_TYPEFROM PROJECTS P LEFT JOIN PROJECTS_CHILDREN CON P.PROJECT_ID = C.PROJECT_IDWHERE P.PROJECT_ID IS NULLUNION-- PART 2: HAS CHILD RECORDS, BUT NOT OF TYPE ZSELECT PROJECT_ID, 'Child Data, Not type Z' AS SUB_TYPEFROM PROJECTSWHERE PROJECT_ID NOT IN((SELECT PROJECT_IDFROM PROJECTS_CHILDRENWHERE CHILD_TYPE Like "Z*")ANDPROJECT_ID NOT IN (SELECT P.PROJECT_IDFROM PROJECTS P LEFT JOIN PROJECTS_CHILDREN CON P.PROJECT_ID = C.PROJECT_IDWHERE P.PROJECT_ID IS NULL));
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Jul 20, 2005
Excuse me in advance fo my little English.I've got this stored procedure************************************************** ************************************declare @Azienda as varchar(3), @Utente as varchar(20),@DataDa as datetime, @DataA as datetime,@AreaDa as varchar(3), @AreaA as varchar(3),@LineaDa as varchar(3), @LineaA as varchar(3),@TipoDa as varchar(3), @TipoA as varchar(3),@FamigliaDa as varchar(3), @FamigliaA as varchar(3),@ProdottoDa as varchar(20), @ProdottoA as varchar(20),@AgenteDa as varchar(4), @AgenteA as varchar(4),@NazioneDa as varchar(50), @NazioneA as varchar(50),@ZonaDa as Varchar(3), @ZonaA as Varchar(3),@ProvinciaDa as varchar(2), @ProvinciaA as varchar(2),@ClienteDa as Varchar(12), @ClienteA as Varchar(12),@DestinDa as varchar (5), @DestinA as varchar (5),@TipoDestinDa as varchar(1), @TipoDestinA as varchar(1),@FlagProdNoTarget as varchar(5),@GrAcqDa as varchar(10), @GrAcqA as varchar(10),@TipoCliDa as varchar(3), @TipoCliA as varchar(3),@SettMercDa as varchar(3), @SettMercA as varchar(3)Set @Azienda = '900'Set @Utente = 'Eugenio'Set @DataDa = '2004-01-01'Set @DataA = '2004-01-10'Set @AreaDa = 'UNI'Set @AreaA = 'UNI'Set @LineaDa = ''Set @LineaA = 'ZZZ'Set @TipoDa = ''Set @TipoA = 'ZZZ'Set @FamigliaDa = ''Set @FamigliaA = 'ZZZ'Set @ProdottoDa = ''Set @ProdottoA = 'ZZZZZZZZZZZZZZZZZZZZ'Set @AgenteDa = ''Set @AgenteA = 'ZZZZ'Set @NazioneDa = ''Set @NazioneA = 'ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ ZZ'Set @ZonaDa = ''Set @ZonaA = 'ZZZ'Set @ProvinciaDa = ''Set @ProvinciaA = 'ZZ'Set @ClienteDa = ''Set @ClienteA = 'ZZZZZZZZZZZZ'Set @DestinDa = ''Set @DestinA = 'ZZZZZ'Set @TipoDestinDa = ''Set @TipoDestinA = 'Z'Set @FlagProdNoTarget = 'Vero'Set @GrAcqDa = ''Set @GrAcqA = 'ZZZZZZZZZZ'Set @TipoCliDa = ''Set @TipoCliA = 'ZZZ'Set @SettMercDa = ''Set @SettMercA = 'ZZZ'Select WSDFR.AreaCommerciale,WSDFR.Agente,WSDFR.NazDestin,WSDFR.ZonaDestin,WSDFR.ProvDestin,WSDFR.Cliente,WSDFR.DescrCliente,WSDFR.GruppoAcq,WSDFR.TipoCli,WSDFR.SettMerc,WSDFR.CDestin,WSDFR.DescrDestin,WSDFR.TipoDestin,WSDFR.EsclStatis,WSDFR.EsclTarget,WSDFR.ValoreNetto,WSDFR.TpDocum,WSDFR.VCambioITL,WSDFR.VCambioEUR,WSDFR.MeseFatt,WSDFR.PosizioneFrom W_St_DocFatt_Righe WSDFRinner join UniP_Prodotti UPP onWSDFR.prodotto=UPP.CodWhere WSDFR.Dtdocum between @DataDa and @DataA andWSDFR.AreaCommerciale between @AreaDa and @AreaA andWSDFR.LineaProdotto between @LineaDa and @LineaA andWSDFR.TipoProdotto between @TipoDa and @TipoA andWSDFR.FamigliaProdotto between @FamigliaDa and @FamigliaA andWSDFR.Prodotto between @ProdottoDa and @ProdottoA andWSDFR.Agente between @AgenteDa and @AgenteA************************************************** **************************************************"W_St_DocFatt_Righe" is a view.This query run on my SQL7 server and it takes about 10 seconds.This query exists on another SQL7 server and until last week it took about10 seconds.The configuration of both servers are same. Only the hardware is different.Now, on the second server this query takes about 30 minutes to extract the same details, but anybody has changed any details.If I execute this query without Where, it'll show me the details in 7seconds.This query still takes about same time if Where isWhere WSDFR.Dtdocum between @DataDa and @DataA andWSDFR.AreaCommerciale between @AreaDa and @AreaA andWSDFR.LineaProdotto between @LineaDa and @LineaA and--WSDFR.TipoProdotto between @TipoDa and @TipoA and--WSDFR.FamigliaProdotto between @FamigliaDa and @FamigliaA andWSDFR.Prodotto between @ProdottoDa and @ProdottoA andWSDFR.Agente between @AgenteDa and @AgenteAorWhere WSDFR.Dtdocum between @DataDa and @DataA andWSDFR.AreaCommerciale between @AreaDa and @AreaA and--WSDFR.LineaProdotto between @LineaDa and @LineaA and--WSDFR.TipoProdotto between @TipoDa and @TipoA andWSDFR.FamigliaProdotto between @FamigliaDa and @FamigliaA andWSDFR.Prodotto between @ProdottoDa and @ProdottoA andWSDFR.Agente between @AgenteDa and @AgenteAorWhere WSDFR.Dtdocum between @DataDa and @DataA andWSDFR.AreaCommerciale between @AreaDa and @AreaA and--WSDFR.LineaProdotto between @LineaDa and @LineaA and--WSDFR.TipoProdotto between @TipoDa and @TipoA and--WSDFR.FamigliaProdotto between @FamigliaDa and @FamigliaA and--WSDFR.Prodotto between @ProdottoDa and @ProdottoA andWSDFR.Agente between @AgenteDa and @AgenteAIt is a real puzzle!What happen?Is there someone that had such as problems and have the right solution?Thanks in advance.ByeEugenio
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Apr 17, 2008
Is there a more efficient way to write this query? It takes 2 minutes and 15 seconds to run against 200,000 records.
UPDATE Tbl_a
SET Flag = NULL
WHERE Flag = 1 And Not Exists(Select Id From Upload
Where Tbl_a.Id = Upload.Id)
thanks,
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Feb 5, 2008
Hi all.I want to use the following query in a sp to enable paging using ObjectDataSource.The problem (being EXTREMELEY slow) arises when I add these joins and where statements.
SELECT r.RID AS ReqID, r.Name AS ReqName, r.Family AS ReqFamily,t3.Name AS DistName, t4.Name AS RurName,t5.Name AS VilName, n.Name+' '+n.Family AS NazerName ,ROW_NUMBER() over (order by r.Family) AS RowRankFROM Requests rLEFT OUTER JOIN Nazeran n ON r.nazerID = n.ID LEFT OUTER JOIN t1States t1 ON t1.ID = r.StateID LEFT OUTER JOIN t2Provinces t2 ON t1.ID = t2.StateID AND r.ProvID = t2.ID LEFT OUTER JOIN t3Districts t3 ON t2.ID = t3.provID AND t1.ID = t3.stateID AND r.DistID = t3.ID LEFT OUTER JOIN t4RuralDistricts t4 ON t3.ID = t4.distID AND t2.ID = t4.provID AND t1.ID = t4.stateID AND r.RurID = t4.ID LEFT OUTER JOIN t5Villages t5 ON t4.ID = t5.rurID AND t3.ID = t5.distID AND t2.ID = t5.provID AND t1.ID = t5.stateID AND r.VilID = t5.IDWHERE r.stateid=(case when @StateID is null or @StateID='' then r.stateid else @StateID end) and r.provid=(case when @provID is null or @provID='' then r.provid else @provID end) and r.rID=(case when @ReqID is null or @ReqID='' then r.rID else @ReqID end) and isnull(r.nazerID,'')=(case when @nazerID is null or @nazerID='' then isnull(r.nazerID,'') else @nazerID end) and r.name+' '+r.family like (case when @ReqName is null or @ReqName='' then r.name+' '+r.family else '%'+@ReqName+'%' end)
**there are 1million rows in [Requests] table ,200000 rows in [t5villages], and about total 5000 rows in other tables.As you can see, this is for a GridView showing list of people requesting a loan allowing users to make alternative searches based on Name, Familyname ,ID ,...
would you please help me optimize and make fast this query.Many thanks..
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Feb 19, 2008
Hai i use Sql Server 2000 today i got this problem
when i execute "select * from service_db" some times it is executed successfully but most of times the query on execution continusly
why this happen how to solve this pbm very urgent
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Dec 2, 2003
Hi all,
I have sql query to search for fields in a rather big view. If I execute the
query in sql server enterprise manager, the results will be displayed in
less than 6 seconds. However, if I execute it using asp.net, it will take
very long (more than 2 minutes).
The query is a simple one like "SELECT * FROM myview WHERE name LIKE
'%Microsoft%'". And the code I use to execute it in asp.net is
Dim dsRtn As DataSet
Dim objConnection As OleDbConnection
Try
objConnection = GetOleDbConnection()
objConnection.Open()
Dim objDataAdapter As New OleDbDataAdapter(strSearch, objConnection)
Dim objDataSet As New DataSet()
objDataAdapter.Fill(objDataSet, strTableName)
dsRtn = objDataSet
Catch ex As Exception
dsRtn = Nothing
Finally
If objConnection.State = ConnectionState.Open Then
objConnection.Close()
End If
End Try
Where strSearch is the sql search string.
I don't have any problem using such code for other queries.
Could somebody suggest the cause of the problem and how to solve it? Thanks!
Best regards,
David
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