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,
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
View 2 Replies View RelatedI 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
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
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.
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!
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
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?
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')
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?
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
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
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?
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
View 1 Replies View RelatedThis 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));
View 4 Replies View RelatedExcuse 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
View 11 Replies View RelatedHi 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..
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
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
Hi,
I am having a query where I am connecting to eight different tables using joins. When I join one table to another the speed of the execution becomes less. Even on my local server it is taking nearly 2 to 3 minutes to execute the query. How can I increase the speed of execution of my query.
Thanks in advance,
Uday
This queries performance is acceptable (about 1 second) when run like this:
SELECT a.f1,a.f2,b.ff1,b.ff2 FROM table1 a LEFT OUTER JOIN table2 b ON a.id = b.id AND b.ff3 = 'T'
WHERE a.mydate BETWEEN '3/4/2002' AND '3/6/2002' AND b.ff4 = 'somevalue'
It is terrible (60 seconds) when run like this:
SELECT a.f1,a.f2,b.ff1,b.ff2 FROM table1 a LEFT OUTER JOIN table2 b ON a.id = b.id AND b.ff3 = 'T'
WHERE b.mydate BETWEEN '3/4/2002' AND '3/6/2002' AND b.ff4 = 'somevalue'
I need the date range to come from the b.maydate. The field is indexed. If I run another query directy on table2 b without a JOIN and using b.mydate for some daterange it is quite fast. Any idea how to speed this up?
Thanks,Adrian
Please help me out:
It is textremely slow when I run a query in My SQL Server 2000 Query Analyzer on my laptop. But when I turn off the wireless card on the laptop, the query runs instantly.
Could you please tell me how can I make the server running faster when my computer is connected to the internet?
tblElements.ID is a foreign key to tblOwner.eID
@PrevRec = dynamic number of previous records
@owner = owner ID
SELECT TOP 2 tblOwner.eID FROM tblOwner
LEFT JOIN tblElements ON
tblElements.ID = tblOwner.eID
WHERE tblOwner.own_ID = @Owner AND tblElements.ID NOT IN
(SELECT TOP + @PrevRec + tblOwner.eID FROM tblOwner
LEFT JOIN tblElements ON
tblElements.ID = tblOwner.eID WHERE tblOwner.own_ID = @Owner) ORDER BY tblOwner.eID ASC
This query is used to display one record per page on a ASP paging script, I select top 2 because, I want to be able to know if I have another page or record to go to and deside if I need to display the "Next" button.
Also It is suppose to select records only assigned to it's ower.
It works fairly quick when viewing first few hundred records, then it takes a very long time.
I have indexed ID and eID as clustered indexes also tblOwner could have multiple instances eID.
Is there an easier way of writing this out.
I have a query in access that is running extremely slow and I'm trying to find a better way to write it. It appears to be the criteria statement that is causing the lag. Is there a better way to write this? And unfortunately I have to keep it in access.
query:
SELECT DISTINCT "JBC" AS ClientCode, PaymentDetail.PatientNumber, Procedures.CaseNumber, IIf(IsNull([TicketNumber]),Procedures.patientnumber & Year(Procedures.dateofservice) & Month(Procedures.dateofservice) & Day(Procedures.dateofservice),Procedures.ticketnumber) AS ClaimNumber, PaymentDetail.PaymentCounter, PaymentDetail.TransAmount, Payments.PaymentDate, PaymentDetail.AccountingDate, PaymentDetail.TransDate, payments.PaymentType & "-" & Adjustments.adjustmentcode AS CombinedPmtType, Payments.PaymentType, Payments.PaymentCode, Adjustments.AdjustmentCode, PaymentCodes.BriefDescription, PaymentCodes.LongDescription, Payments.CarrierCode, Payments.Remarks, Procedures.ProcedureCode, Procedures.DateOfService, PaymentDetail.DetailCounter
FROM ((((PaymentDetail LEFT JOIN Procedures ON (PaymentDetail.PaymentCounter = Procedures.Counter) AND (PaymentDetail.AccountingDate = Procedures.AccountingDate) AND (PaymentDetail.PatientNumber = Procedures.PatientNumber)) LEFT JOIN Payments ON (PaymentDetail.TransDate = Payments.AccountingDate) AND (PaymentDetail.TransCounter = Payments.Counter) AND (PaymentDetail.PatientNumber = Payments.PatientNumber)) LEFT JOIN PaymentCodes ON Payments.PaymentCode = PaymentCodes.PaymentCode) LEFT JOIN Adjustments ON (PaymentDetail.TransDate = Adjustments.AccountingDate) AND (PaymentDetail.PatientNumber = Adjustments.PatientNumber)) LEFT JOIN AdjustmentCodes ON Adjustments.AdjustmentCode = AdjustmentCodes.AdjustmentCode
WHERE (((Procedures.CaseNumber)=0) AND ((PaymentDetail.TransAmount)<>0) AND ((Payments.PaymentType) Is Null) AND ((PaymentDetail.DetailCounter)=2)) OR (((Procedures.CaseNumber)=0) AND ((PaymentDetail.TransAmount)<>0) AND ((Payments.PaymentType) Is Null) AND ((PaymentDetail.DetailCounter)=5) AND ((AdjustmentCodes.InsuranceIndicator)="N"));
SELECT Column1,Column2,Column3 ....
FROM vwMyView
ORDER BY CreatedDT
View has about 10000 rows, If I remove order by query runs faster but adding an order by cause query to timeout..
All tables have clustered index based on the primary key of the table..
(a) Should I create an index view with CreatedDT as non clustered index?
(b) Or create a non clustered index on CreatedDT column on the underlying table?
I can provide DDL but if something obvious I am missing
Thanks
I have a query that is taking 6 mintues on my db so i copied the 2 relevant tables to a new db for testing and then tested the query and it took only 30 seconds.
why would this be? tables are the same size - i copied to the new by creating the table and then inserting from the old to then new.
these are very big tables.
the first db does have many other tables but why should that make a difference?
Hi
I have a database and when I run a query on it the query takes 10 minutes to complete. I am running the following query
SELECT t103.cs_flag, t103.pr_flag, SUM (t103.amount), COUNT (t103.record_id)
FROM br_data t103
WHERE t103.acct_id = 12 AND (t103.state = 3 OR t103.state = 7)
GROUP BY t103.cs_flag, t103.pr_flag
The br_data table doesnt seem to be using its indexes ?? And it has around a million records. Now when I export the database and import on to another SQL server and then run the same query as above it only takes 1 or 2 seconds.
On the server that we are having problems with I have tried to re-build the indexes using DBCC DBREINDEX (br_data,' ',0) but this hasnt helped. I have also tried backing up the database, delete the database then restore, this also hasnt helped. I have no idea why the query runs slow on the original box, but then quick when I transfer it to another server??
Both servers are running windows 2003 with SQL 2000 SP4. There are no resorrce problems such as CPU / memory, Any ideas??
Thanks
Hello EverybodyI run the following query against to identical databases. Executiontime on the first DB is 0 seconds, on the other 6 seconds!SELECT dbo.HRMABZ.EMPKEY , dbo.HRMABZ.CONNUMB, dbo.HRM_CALENDER.Datum, dbo.HRMABZ.ABZTXTFROM dbo.HRM_CALENDER INNER JOIN dbo.HRMABZON dbo.HRM_CALENDER.Datum >= dbo.HRMABZ.ABZDATFAND dbo.HRM_CALENDER.Datum <= dbo.HRMABZ.ABZDATTWHERE (dbo.HRMABZ.ABZTECH = 'N')AND (dbo.HRMABZ.ABZLDLT = 'N')AND (dbo.HRM_CALENDER.Valid = 1)I tried to analyze to query execution in the execution plan and foundtwo different arguments in a 'nested loop / inner join' which I dontunderstand. The nested loop does consume most of the time:On the fast Server the argument says:'Outer References:([HRMABZ].[ABZDATT],[HRMABZ].[ABZDATF])'On the slow server the argument says:'WHERE: ([HRM_Calender].[Datum]>=[HRMABZ].[ABZDATF] AND[HRM_Calender].[]<=[HRMABZ].[ABZDATT])'Additional information for the two databases:- Slow database runs on a SQL2000 SP3a English, W2K SP3- Fast database runs on a SQL2000 SP3a German, W2k SP3Can somebody explain me the difference between the two execution plansand how I could force the slow database acting the same way as thefast one does?Thank youThomi
View 7 Replies View RelatedHi,I am using MS Access as the front end and it's using ODBC link to connectto the backend tables residing at SQL SERVER.I have some queries that are doing some calculation and the time taken toretrieve the data has been quite slow.The no of data in that table is around 500K records. and the tables havealready got the PKs defined.How can i improve the performance of the query besides converting to SQLViews or SP(this is going to be diffcult as i am getting some filterparameters from the forms in MS Access) ?Or what further checks shld i be doing to find out the cause. I have donePerformance Monitor and the CPU processing% is around 20 - 55% while runningthose querieskindly advisetks & rdgs--Message posted via SQLMonster.comhttp://www.sqlmonster.com/Uwe/Forum...eneral/200511/1
View 9 Replies View Relatedhey guys
i have a query that takes too long that, actually i never got it to finish excuting
the query looks like tht
select referer,count(*) from t1 where referer is not null
and referer in( select distinct(Referer_Direct) from t2 where Referer_Direct is not null )group by referer
the inner select just returns 5 rows
so when i replace the inner select with actual values like tht
select referer,count(*) from t1 where referer is not null
and referer in('val1','val2','val3','val4','val5' )group by referer
it excutes immediatly
any clues how to solve this issue
the db is running on sql server 2005 express SP2
thx in advance
exec sp_tables_ex 'linked server'
The table_cat returned a null value. I ended up writing
select * from linked_server..schema.table and it did work. However, it was really slow. 56 seconds vs. less than a second for the pass through openquery.
My guess is that the problem is that the table_cat was null and this is why it is so slow. Is this correct? How do I resolve this speed issue?
Hi all,
Last week we've made some modifications to our 20 GB database(with 2 huge tables (around 30 million rows)):
1.
we've created 8 filegroups on 8 physical disks with RAID 1+0. In each
of them we have one big table and others small tables unrelated with
the big table. We've also created a filegroup for the nonclustered
indexes from those big tables.
2. The Server is running SQL Server 2000 with SP3a
3. We've reindexed the database, updated statistics on all tables
Now, we have a SP that on the old configuration took about 20 min to complete.
But now, on our new configuration with the modifications listed above it's taking about
3 HOURS.
This is the SP's body: is calling a function:
create proc X
as
begin
Select dbo.myfunc(mytable.field)
from mytable
end
The function used in select statement is querying those 2 huge tables.
If the select statement is runned for only one record it's done instantly, but for 20000 recs it is taking almost 3 hours.
I must specify that also the function is running instantly, but in that select statement something is happening and we don't know what!!!
If you have any ideeas on what to do or what to check
Thanks a lot
Dan
I've got a slow query that when run in management studio again the publisher database it completes in 2 seconds but when run on a compact 3.5 sdf it takes 5-10 minutes. After adding some indexes it gets down to 5 minutes at best. The complex explicit joins requiring both null or equal are required for the propper results.
Any suggestions would be appreciated.
Thanks,
Patrick
SELECT MasterCategories.description AS category, Masters.model, Masters.itemType, Items.barCode,
Items.itemNumber, Items.itemId, Inventories.itemStatusId, Inventories.lastXferId, Inventories.returnDate,
assignment.description AS assignedTo, assignment.twEntityId AS assignedToId, owners.twEntityId AS ownerId, owners.description AS owner,
Inventories.kitId, Masters.masterId, MasterCategories.masterCategoryId, Descriptions.description, NULL AS kitDescription,
Manufacturers.name AS manufacturer, Masters.manufacturerId, Items.organizationId, Masters.descriptionId,
Masters.masterNumber, assignment.stockpointId, Items.meterLevel, Items.meterUomId, Inventories.personalIssue, Masters.upc,
Items.enclosure, StatusCodes.description AS itemStatus, StatusCodes.statusCodeNumber, Inventories.recordId,
TWEntities.twEntityId AS managerId, TWEntities.description AS manager, Items.deleted,
assignment.stockpoint AS assignmentIsStockpoint, COALESCE (SUM(InventoryTransaction.quantity), 0) AS quantity
FROM Masters INNER JOIN
Descriptions ON Descriptions.descriptionId = Masters.descriptionId INNER JOIN
Items ON Masters.masterId = Items.productId INNER JOIN
Inventories ON Items.itemId = Inventories.itemId INNER JOIN
TWEntities AS assignment ON assignment.twEntityId = Inventories.entityId INNER JOIN
MasterCategories ON Masters.categoryId = MasterCategories.masterCategoryId LEFT OUTER JOIN
InventoryKeys ON (Inventories.entityId = InventoryKeys.entityId OR
Inventories.entityId IS NULL AND InventoryKeys.entityId IS NULL) AND (Inventories.itemId = InventoryKeys.itemId OR
Inventories.itemId IS NULL AND InventoryKeys.itemId IS NULL) AND (Inventories.personalIssue = InventoryKeys.personalIssue OR
Inventories.personalIssue IS NULL AND InventoryKeys.personalIssue IS NULL) AND
(Inventories.itemStatusId = InventoryKeys.statusCodeId OR
Inventories.itemStatusId IS NULL AND InventoryKeys.statusCodeId IS NULL) AND (Inventories.kitId = InventoryKeys.kitId OR
Inventories.kitId IS NULL AND InventoryKeys.kitId IS NULL) AND (Inventories.ownerId = InventoryKeys.ownerId OR
Inventories.ownerId IS NULL AND InventoryKeys.ownerId IS NULL) AND (Inventories.returnToId = InventoryKeys.managerId OR
Inventories.returnToId IS NULL AND InventoryKeys.managerId IS NULL) LEFT OUTER JOIN
InventoryTransaction ON InventoryKeys.inventoryKeyId = InventoryTransaction.inventoryKeyId LEFT OUTER JOIN
TWEntities ON Inventories.returnToId = TWEntities.twEntityId LEFT OUTER JOIN
TWEntities AS owners ON Inventories.ownerId = owners.twEntityId LEFT OUTER JOIN
StatusCodes ON Inventories.itemStatusId = StatusCodes.statusCodeId LEFT OUTER JOIN
Manufacturers ON Masters.manufacturerId = Manufacturers.manufacturerId WHERE (Items.deleted = 0 and Masters.itemType <> 'M') AND ((assignment.stockpointId = '7cd94c06-8375-4c47-b54a-9e7018434c63') OR (Inventories.ownerId IN ('7cd94c06-8375-4c47-b54a-9e7018434c63') OR (managerId IN ('7cd94c06-8375-4c47-b54a-9e7018434c63')))) AND (Inventories.kitId is null)
GROUP BY MasterCategories.description, Masters.model, Masters.itemType, Items.barCode, Items.itemNumber, Items.itemId,
Inventories.itemStatusId, Inventories.lastXferId, Inventories.returnDate, assignment.description, assignment.twEntityId, owners.twEntityId,
owners.description, Inventories.kitId, Masters.masterId, MasterCategories.masterCategoryId, Descriptions.description,
Manufacturers.name, Masters.manufacturerId, Items.organizationId, Masters.descriptionId, Masters.masterNumber,
assignment.stockpointId, Items.meterLevel, Items.meterUomId, Inventories.personalIssue, Masters.upc, Items.enclosure,
StatusCodes.description, StatusCodes.statusCodeNumber, Inventories.recordId, TWEntities.twEntityId, TWEntities.description,
Items.deleted, assignment.stockpoint
ORDER BY category, assignedTo