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HELP ME TO OPTIMIZE QUERY

Feb 2, 2007

Hello friends,
 
I’m facing performance related problem while running following query on SQL Server 2000.
 
This query is basically used to find last location of each unit that are passed. Here I am passing data like “‘26','27','28','29','30','31','32','33','34','35','36','37','38','39','40','41','42','43','44','45','46','47','48','49','50'" in @Units variable. But it takes too much time and I don’t get output. Table is having around 5 Million records.
 
Query:
 
SELECT    Alias, tblUnit.UnitID,  Location, Latitude, Longitude,Convert(varchar(10),UnitHistoryDate,1) + ' ' + substring(Convert(varchar(40),UnitHistoryDate,109),12,9)  + ' ' + substring(Convert(varchar(40),UnitHistoryDate,109),25,2) as [Date/Time], unithistoryid
FROM tblUnit INNER JOIN
tblUnitHistory ON  tblUnit.UnitID =  tblUnitHistory.UnitID
WHERE tblUnitHistory.UnitHistoryDate
IN (SELECT MAX(UnitHistoryDate) FROM tblUnitHistory WHERE  tblUnitHistory.UnitID in (' + @Units + ') GROUP BY tblUnitHistory.UnitID)
AND tblUnit.UnitID in (' + @Units + ')
ORDER BY tblUnit.UnitID
 
 
Table Structure:
 
UnitHistoryID                             int   Primary Key
UnitID                                       int                    
Location                                    varchar(200)     
Latitude                                     decimal            9         
Longitude                                  decimal            9         
Speed                                       decimal 5         
BatteryVoltage                           decimal 5         
ReasonCode                              int
DistanceFromLastLocation            decimal 9         
UnitHistoryDate                         datetime
 
Indexes:
 
1. Clustered Index on Column UnitID
2. Non-clustered Index on Column UnitHistoryDate
3. Non-clustered Index on Column UnitHistoryID
 
Please help me to write optimize query and suggest me the steps to require making this query faster. Any help is appreciated. Thanks in advance.
 
Regards,
Sandeep

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Optimize This Query?

Oct 12, 2007

I have a nightly job that aggregates data into a summary table.  Each night, an additional item may or may not be added, so the table is cleared and repopulated.  I've got this working fine.  Now, I am being asked to track when an item first appears in the summary table.  Here is the code I am using to do this.  I realize it is very poor performance, but I don't know how to make it better.
MyTable Columns:  id INT PK  ,v1 VARCHAR(4)  ,v2 VARCHAR(10  ,v3 DECIMAL  ,item1 BIT  ,item2 BIT  ,item3 BIT
MyTable2 Columns:  v1 VARCHAR(4)  ,v2 VARCHAR(10  ,v3 DECIMAL  ,item INT  ,FirstKnownDate DATETIME
All columns are NOT NULL.1 DECLARE @iNextRowID INT
2 ,@iCurrentRowID INT
3 ,@iLoopControl INT
4 ,@v1 VARCHAR(4)
5 ,@v2 VARCHAR(10)
6 ,@v3 DECIMAL
7
8 /* This is a loop that executes for a dynamic number of items, eg item1=1, then item2=1, etc */
9 SET @iLoopControl=1
10 SELECT @iNextRowID=MIN(id) FROM MyTable WHERE item1=1
11
12 IF ISNULL(@iNextRowID,0) <> 0 BEGIN
13 SELECT @iCurrentRowID = id
14 ,@v1 = v1
15 ,@v2 = v2
16 ,@v3 = v3
17 FROM MyTable
18 WHERE id=@iNextRowID
19
20 WHILE @iLoopControl = 1 BEGIN
21 IF NOT EXISTS(SELECT * FROM MyTable2 WHERE v1=@v2 AND v2=@v2 AND v3=@v3 AND item=1) BEGIN
22 INSERT INTO MyTable2
23 /* COLUMN */ (v1,v2,v3,item,firstknowndate)
24 SELECT @v1, @v2, @v3, 1, GETDATE()
25 END
26
27 SELECT @iNextRowID = NULL
28 SELECT @iNextRowID = MIN(id) FROM MyTable WHERE id>@iCurrentRowID AND item1=1
29
30 IF ISNULL(@iNextRowID,0) = 0 BEGIN
31 BREAK
32 END
33
34 SELECT @iCurrentRowID = id
35 ,@v1 = v1
36 ,@v2 = v2
37 ,@v3 = v3
38 FROM MyTable
39 WHERE id=@iNextRowID
40 END
41 END42 /* This is the end of the items loop */
This query takes 5 minutes to do straight inserts without the test for exists in the loop for 3 items.  MyTable has just under 96,000 rows in it. MyTable2 has 121,857 rows in it. It is not about 55 minutes and it is still running with the exists so that a row isn't inserted twice. Is there anything I can do to optimize this? EDIT: The query just finished running again with the test for exists on each row. It shouldn't have inserted any new rows, but it took 57 minutes and inserted another 114,115 rows. Not good. Anyone see what is wrong with the query?

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May 25, 2005

Hi all,

I need help to optimize this query:

Code:


SELECT s.konto, s.sifra_partnera, s.temeljnica, s.rbr, s.duguje, s.potrazuje, s.saldo
FROM saldakonti s
WHERE
s.datum<'2005-01-01' AND
s.uplata='R' AND
EXISTIS (SELECT t.temeljnica, t.rbr FROM saldakonti t WHERE
t.konto=s.konto AND
t.sifra_partnera=s.sifra_partnera AND
t.vezni_broj=s.vezni_broj and
t.datum<'2005-01-01' AND
(t.uplata='S' or t.uplata='U')
GROUP BY t.temeljnica, t.rbr
HAVING
abs(sum(t.duguje-t.potrazuje))<>abs(s.saldo))
ORDER BY
s.konto, s.sifra_partnera, s.temeljnica, s.rbr, s.duguje, s.potrazuje, s.saldo


Currently this query takes forever to execute. Any suggestions appreciated.
Thanks in advance.

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Feb 26, 2004

Can someone look at this sql statement and tell me if it can be sped up? Also I have to add to it by joining it with another table. How do I do that? Just by nesting another join?

Thanks!


Set rs=Server.CreateObject("ADODB.Recordset")
sql = "SELECT td.TeamID, td.TeamName, rt.PartID, rt.Effort, rt.UnitMeas, pd.MinMilesConv "
sql = sql & "FROM TeamData td INNER JOIN PartData pd ON td.TeamID = pd.TeamID "
sql = sql & "JOIN RunTrng rt ON pd.PartID = rt.PartID "
sql = sql & "WHERE rt.TrngDate >= '" & Session("beg_date") & "' AND rt.TrngDate < '" & Session("end_date")
sql = sql & "' AND pd.Archive = 'N' AND pd.Gender = '" & sGender & "' AND pd.Grade >= " & iMinGrade
sql = sql & " AND pd.Grade <= " & iMaxGrade & " ORDER BY td.TeamID"
rs.Open sql, conn, 1, 2

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Mar 25, 2004

Hi all,

Table 'A' is having 105 fields & 233000 records.
One Clusterd Primary Key & 10 nonclusterd key.

If I joined with table 'A' or 'Select * from 'A' , Query takes more time so please let me know best way to structure query or table, Indexes etc.

Reply to me asap positivaly ....

Regards,
M. G.

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Optimize Query.

Apr 1, 2004

Hi All,

please look into below query.



SELECT TOP 101 Cert_WarehouseDetails.CertID, Cert_WarehouseDetails.UnderwriterID,
Cert_WarehouseDetails.WarehouseEntriesID, Cert_WarehouseDetails.DivisionWarehouseLocID,
Cert_WarehouseDetails.TypeID, Cert_WarehouseDetails.ReportingType, Cert_WarehouseDetails.CertWHID,
Cert_WarehouseDetails.ClientPolicyDivisionID, Cert_WarehouseDetails.RecordNO, Cert_WarehouseDetails.InsuredValueX,
Cert_WarehouseDetails.PremiumTotalX, Cert_WarehouseDetails.StatusX, Cert_WarehouseDetails.StatusID,
Cert_WarehouseDetails.AuthorizeDateX, Cert_WarehouseDetails.CodeX, Cert_WarehouseDetails.IssuedDateX, Cert_WarehouseDetails.BillofLadingDateX,
DOGX, Cert_WarehouseDetails.ConveyanceNameX, Cert_WarehouseDetails.LogonNameX , Cert_WarehouseDetails.ClientNameX,
(CASE WHEN UnderwriterID = 0 THEN ' ' ELSE tblClientUsers.FirstName + ' ' + tblClientUsers.LastName END) AS OwnedBy,
(CASE WHEN UnderwriterID = 0 THEN CAST(' ' AS NVARCHAR) ELSE CAST(TakeOwnershipDate as nvarchar) END) AS OwnedDate

FROM
( SELECT tblCertificates.[CertID] AS CertID, tblCertificates.[UnderwriterID] AS UnderwriterID, tblReportingType.[TypeID] AS TypeID, tblReportingType.[ReportingType] AS ReportingType, NULL AS WarehouseEntriesID, NULL AS DivisionWarehouseLocID , tblCertificates.CertID AS CertWHID, tblCertificates.ClientPolicyDivisionsID AS ClientPolicyDivisionID, tblCertificates.CertificateNo AS RecordNO, tblCertificates.TotalInsured AS InsuredValueX, (CASE WHEN tblCertificates.Status=101 or tblCertificates.Status=104 or tblCertificates.DivReferral=1 THEN 0 ELSE PremiumTotal-tblCertificates.Discount END) AS PremiumTotalX, tblStatus.Description AS StatusX, tblStatus.StatusID AS StatusID, (CASE WHEN tblCertificates.Status < '105' and tblCertificates.Status <> '103' THEN null ELSE AuthorizeDate END) AS AuthorizeDateX, tblCurrency.Code AS CodeX, tblCertificates.IssuedDate AS IssuedDateX, tblCertificates.BillofLadingDate AS BillofLadingDateX, tblCertificates.DescriptionofGoods AS DOGX, tblCertificates.ConveyanceName AS ConveyanceNameX, tblClientUsers.LogonName AS LogonNameX , tblClient.ClientName AS ClientNameX, tblCertificates.TakeOwnershipDate AS TakeOwnershipDate, tblCertificates.ClientID AS ClientID, tblCertificates.Producer AS BrokerID, tblCertificates.SBU AS SBU, tblCertificates.AssociationID AS AssociationID, tblCertificates.AssuredName AS AssuredName, tblCertificates.UserID AS UserID, tblCertificates.Demoflag AS Demoflag FROM tblCertificates, tblReportingType,tblcurrency,tblClientUsers,tblCli ent,tblStatus WHERE tblCertificates.reportType = tblReportingType.TypeID AND tblCertificates.PremiumCurrencyType = tblCurrency.ID AND tblclientUsers.UserID = tblCertificates.UserID AND tblcertificates.ClientId = tblclient.ClientID AND tblStatus.StatusID = tblCertificates.Status
UNION
SELECT NULL AS CertID, NULL AS UnderwriterID, tblReportingType.[TypeID] AS TypeID, tblReportingType.[ReportingType] AS ReportingType, tblWarehouseEntries.[WarehouseEntriesID] AS WarehouseEntriesID, tblWarehouseEntries.[DivisionWarehouseLocID] AS DivisionWarehouseLocID , tblWarehouseEntries.WarehouseEntriesID AS CertWHID, tblWarehouseEntries.ClientPolicyDivisionID AS ClientPolicyDivisionID, tblWarehouseEntries.WarehouseEntriesID AS RecordNO, (CASE WHEN ValueCurrencyType=0 THEN 0 ELSE UnitValue END) AS InsuredValueX, (CASE WHEN tblWarehouseEntries.StatusID=101 THEN 0 ELSE PremiumSum END) AS PremiumTotalX, tblStatus.Description AS StatusX, tblStatus.StatusID AS StatusID, (CASE WHEN tblWarehouseEntries.StatusID < '105' THEN null ELSE ApprovalDate END) AS AuthorizeDateX, tblCurrency.Code AS CodeX, tblWarehouseEntries.IssuedDate AS IssuedDateX, tblWarehouseEntries.PeriodEndDate AS BillofLadingDateX, LocName AS DOGX, '' AS ConveyanceNameX, tblClientUsers.LogonName AS LogonNameX , tblClient.ClientName AS ClientNameX, tblWarehouseEntries.TakeOwnershipDate AS TakeOwnershipDate, tblWarehouseEntries.ClientID AS ClientID, tblWarehouseEntries.BrokerID AS BrokerID, tblWarehouseEntries.SBU AS SBU, tblWarehouseEntries.AssociationID AS AssociationID, tblWarehouseEntries.AssuredName AS AssuredName, tblWarehouseEntries.UserID AS UserID, tblWarehouseEntries.Demoflag AS Demoflag FROM tblWarehouseLoc, tblWarehouseEntries, tblReportingType,tblCurrency ,tblClientUsers,tblClient, tblDivisionWarehouseLoc,tblStatus WHERE tblWarehouseEntries.reportTypeID = tblReportingType.TypeID and tblWarehouseLoc.WarehouseLocationID = tblDivisionWarehouseLoc.WarehouseLocID and tblDivisionWarehouseLoc.DivisionWarehouseLocID = tblWarehouseEntries.DivisionWarehouseLocID and tblWarehouseEntries.PremiumCurrencyType = tblCurrency.ID and tblWarehouseEntries.UserID = tblClientUsers.UserID and tblClient.ClientID = tblWarehouseEntries.ClientID AND tblStatus.StatusID = tblWarehouseEntries.StatusID

) AS Cert_WarehouseDetails LEFT JOIN tblClientUsers ON Cert_WarehouseDetails.UnderwriterID = tblClientUsers.UserID

WHERE 1 = 1 AND Cert_WarehouseDetails.Demoflag = 0 and
(convert(datetime,convert(nvarchar,Cert_WarehouseD etails.IssuedDateX,101)) >= '1/1/2003') and
(Cert_WarehouseDetails.IssuedDateX is not null and
convert(datetime,convert(nvarchar,Cert_WarehouseDe tails.IssuedDateX,101)) <= '3/31/2004')
ORDER BY Cert_WarehouseDetails.RecordNO



In above query,as
1. Union (INNER) query returns me 200000 records.

2. If I run above query it takes 18 sec because no index on Cert_WarehouseDetails.RecordNO and i'm ordering on that.

3. When I avoid to 'ORDER BY Cert_WarehouseDetails.RecordNO' then query takes 2 sec.

4. In this case Do I have to use 'nvarchar'
convert(datetime,convert(nvarchar,Cert_WarehouseDe tails.IssuedDateX,101)) <= '3/31/2004')

5. Why do we have to use 'nvarchar' can you explain to me in above statement..


Can you provide me alternate solution so I can make it fast.

Please reply to me asap. Thanks in advance.

Regards,
M. Jain

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May 18, 2006

Hi,I have these two tables in a DatabaseITEMSIDnumeric (Primary key)ZDIDnvarchar 3 (not null)IDF_Familynumeric(not null)Descriptionnvarchar40 (not null)DATASIDnumeric(Primary Key)IDF_Itemnumeric(Foreign key)IDF_Referencenumeric(Foreign Key)[Date]smalldatetime(not null)Containernchar10(not null)Averagedecimal(not null)[%Compliance]decimal(not null)[%OutOfRange<MinTg]decimal(not null)[%OutOfRange>MaxTg]decimal(not null)Targetdecimal(not null)[Min]decimal(not null)[Max]decimal(not null)The table DATAS has 4000000+ recordsI'm running this query:SELECT DISTINCT I.ID, I.ZDID, I.IDF_Family, I.DescriptionFROM Items as I, Datas as DWHERE D.IDF_Item = I.ID AND I.IDF_Family = 84AND D.Date BETWEEN '5/18/2004' AND '5/18/2004'it's taking 4-5 minutes to run.The result is correct, there is no thing on that date.I've done a reindex, but still the same thing.What can I do?Thanks

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Nov 17, 2006

Hello,I am trying to find all records that have matching detail_1 or detail_2columns. This is what I have now:select t1.id, t1.detail_1, t1.detail_2, t2.id from user_details t1,user_details t2where t1.detail_1 = t2.detail_1 or t1.detail_2 = t2.detail_2;Using smaller tables of around 1000 records, I have verified that thisindeed does the job. However, when I apply it to the real table thathas around 40,000 records, it takes so long that I have to stop thequery.The table in question is quite simple and is created as follows. Thereare no indexes on the table:create table user_details (id integer, detail_1 varchar(50), detail_2varchar(50)Is there a way to make it go faster?

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Help Me Optimize My Query

Mar 3, 2008

Hi! I have an optimisation problem. I've currently got a query that retrieve about 10K records according the mode that user difined earlier.

At the very beginning I've wrote the same code through the user-defined functions, but I found in publications that it's a wrong way to develop with MSSQL, but it worked more and more faster (3 sec). Now I rewrite my query with inline table functions...CREATE FUNCTION ans_app_name1()


RETURNS TABLE AS RETURN
(SELECT CASE WHEN OBJECT_ID('app_name') > 0 THEN
(SELECT TOP(1) app_name FROM app_name WHERE spid = @@spid)
ELSE NULL END AS app_name )
GO

CREATE FUNCTION ans_get_user_property1(
@property_name VARCHAR(255))
RETURNS TABLE AS RETURN
(SELECT u.value AS user_property FROM user_property u
JOIN ans_app_name1() a ON a.app_name = u.app_name
WHERE property = @property_name AND
username = system_user)
GO

CREATE FUNCTION ans_get_mode()
RETURNS TABLE AS RETURN
(SELECT CAST(user_property AS INT) AS mode FROM ans_get_user_property1('mode'))
GO

CREATE FUNCTION ans_get_state_date()
RETURNS TABLE AS RETURN
SELECT
CASE
WHEN ((SELECT mode FROM ans_get_mode()) IN (3,6)) THEN
CAST(user_property AS DATETIME) END AS state_date
FROM ans_get_user_property1('state_date')
GO

ALTER FUNCTION is_real1(
@mode INT,
@state_date DATETIME)
RETURNS TABLE AS
RETURN (
SELECT uid,
CASE

WHEN (begin_date = 0) or (end_date = 0) THEN 0

WHEN
((@mode IN (1,5)) AND (begin_date <= CURRENT_TIMESTAMP) AND ((end_date IS NULL) OR (end_date > CURRENT_TIMESTAMP)))

OR ((@mode IN (2,5,6)) AND (begin_date IS NULL) AND (end_date IS NULL) AND ISNULL(is_committed, 0) = 0)

OR ((@mode IN (3,6)) AND (begin_date <= @state_date) AND ((end_date IS NULL) OR (end_date > @state_date)))

OR ((@mode = 4) AND (begin_date <= CURRENT_TIMESTAMP) AND ((end_date IS NULL) OR (end_date > CURRENT_TIMESTAMP)))
THEN 1
ELSE 0
END AS is_real
FROM host
)
GO

ALTER view v_host as
SELECT
h.uid,
h.id_histland,
h.id_group,
h.numporyadok,
h.numgroup,
h.objidentnum,
h.egrokn_reg_num,
h.kad_num,
h.ansname,
h.objname,
h.id_objprotstatus,
h.id_kategory,
h.id_objkind,
h.id_histcultvalue,
h.uid_objautor,
h.createdate,
h.id_scientifictype,
h.obj_description,
h.id_admdistrict,
h.cityblock,
h.id_settlement,
h.id_admdistrict2,
h.p_index,
h.id_street,
h.housenum,
h.housenumpart,
h.houseliteranum,
h.buildingnum,
h.corneradress,
h.appartmentnum,
h.id_urbanblock,
h.id_microdistrict,
h.kadblock,
h.end_date,
h.objlocation,
h.parent_uid,
h.kaddistrict,
h.mundistrict,
h.is_committed,
h.order_uid,
h.begin_date,
h.cr_date,
h.order_uid_end,
h.uid_parent_host,
h.is_host_object,
h.id_funcassign,
h.id_immovobjtype,
h.hist_data,
CASE WHEN h.obj_code is NULL THEN
'<object registered>'
ELSE h.obj_code
END AS obj_code,
s.sname AS sname_objprotstatus,
k.sname AS sname_kategory,
ok.sname AS sname_objkind,
p.sname AS name_property,
ISNULL(h.ansname + ' ', '') + h.objname as fullname,
h.pre_material,
h.hist_view_change,
h.adr_id,
h.street_id,
h.cod_mun,
h.hist_object_id,
h.scientifictype
FROM
host h
LEFT JOIN sl_objprotstatus s ON h.id_objprotstatus = s.id
LEFT JOIN sl_kategory k ON h.id_kategory = k.id
LEFT JOIN sl_objkind ok ON h.id_objkind = ok.id
LEFT JOIN sl_property p ON h.id_property = p.id
--JOIN is_real1((SELECT mode FROM ans_get_mode()), (SELECT state_date FROM ans_get_state_date())) r ON r.uid = h.uid
WHERE
(CASE

WHEN (begin_date = 0) or (end_date = 0) THEN 0

WHEN
(((SELECT mode FROM ans_get_mode()) IN (1,5)) AND (begin_date <= CURRENT_TIMESTAMP) AND ((end_date IS NULL) OR (end_date > CURRENT_TIMESTAMP)))

OR (((SELECT mode FROM ans_get_mode()) IN (2,5,6)) AND (begin_date IS NULL) AND (end_date IS NULL) AND ISNULL(is_committed, 0) = 0)

OR (((SELECT mode FROM ans_get_mode()) IN (3,6)) AND (begin_date <= (SELECT state_date FROM ans_get_state_date())) AND ((end_date IS NULL) OR (end_date > (SELECT state_date FROM ans_get_state_date()))))

OR (((SELECT mode FROM ans_get_mode()) = 4) AND (begin_date <= CURRENT_TIMESTAMP) AND ((end_date IS NULL) OR (end_date > CURRENT_TIMESTAMP)))
THEN 1
ELSE 0
END) = 1
GO


set statistics time on

-- cleaning cache
dbcc dropcleanbuffers
dbcc freeproccache

SELECT * FROM v_host
/*
(9777 row(s) affected)

SQL Server Execution Times:
CPU time = 9718 ms, elapsed time = 10834 ms.
*/

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May 1, 2007

Hello all!

I've currently got a query that takes two tables with the same structure, and spits out the differences in the second table - this is done to help me see what new records have been added in the second table that don't exist in the first. The only catch is that I have to compare two columns in sort of a pseudo-composite-key. Here's the gist of the table structure:

Table A:
ID (Autonumber),
Firstname,
Lastname,
OS,
PC Manufacturer

Table B (The new one):
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OS,
PC Manufacturer

The two columns I have to compare are firstname and lastname, as there aren't any other unique identifiers that match between the two tables. Right now, I'm using some really convoluted WHERE statements, and I suspect that it could be done more cleanly. Does anyone have any suggestions?

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Jan 16, 2008



Below you see a query I run.

The result of this query is shown below...
The result shows fields such as Bid_Price_Best_Latest and Ask_Price_Best_Latest may or may not have null values.
At present, I use a cursor to get the values of these two fields if any of them is null from the table tblPricesSourcesImportHistory for the latest Import_Date on each record.
These two fields are referred to as Bid_Price, Ask_Price in tblPricesSourcesImportHistory.

Now I would like to find out how to do this without the use of a cursor, so that I can speed up this query.

Thanks


select
fp.Security_ID,
fp.Security_Name,
fp.Bid_Price_Best_Latest,
fp.Bid_Size_Best_Latest,
fp.Bid_Source,
fp.Ask_Price_Best_Latest,
fp.Ask_Size_Best_Latest,
fp.Ask_Source
from
tblTEST fp
left join tblSources s on fp.Security_ID = s.Security_ID
inner join tblPricesSourcesImportHistory h on
h.Source_ID = s.Source_ID
where
(fp.Bid_Price_Best_Latest is null) or (fp.Ask_Price_Best_Latest is null)
group by
fp.Security_ID,
fp.Security_Name,
fp.Bid_Price_Best_Latest,
fp.Bid_Size_Best_Latest,
fp.Bid_Source,
fp.Ask_Price_Best_Latest,
fp.Ask_Size_Best_Latest,
fp.Ask_Source
order by
fp.Security_ID

fp.Security_ID Security_Name Bid_Price_Best_Latest Bid_Size_Best_Lates Bid_Source Ask_Price_Best_Latest Ask_Size_Best_Latest Ask_Source
1 Alli 84.0000 0.50 G NULL NULL NULL
2 bow 82.5000 0.50 G NULL NULL NULL
4 xte NULL NULL NULL 90.0000 0.50 G
6 Wqu 84.5000 0.50 I NULL NULL NULL
...
...
...

Not sure if it helps but here are the structures of the tables you may need...

CREATE TABLE [dbo].[tblSources](
[Source_ID] [int] IDENTITY(1,1) NOT NULL,
[Security_ID] [smallint] NOT NULL,
[Source_Parent] [varchar](50) NOT NULL,
[Source_Code] [varchar](20) NOT NULL,
[Source_Security_Name] [varchar](50) NOT NULL)



CREATE TABLE [dbo].[tblPricesSourcesImportHistory](
[Price_Source_Import_History_ID] [int] IDENTITY(1,1) NOT NULL,
[Source_ID] [smallint] NULL,
[Source_Parent] [varchar](255) NULL,
[Source_Code] [varchar](255) NULL,
[Security_Name] [varchar](255) NULL,
[Source_Security_Name] [varchar](255) NULL,
[Bid_Price] [varchar](255) NULL,
[Bid_Size] [varchar](255) NULL,
[Ask_Price] [varchar](255) NULL,
[Ask_Size] [varchar](255) NULL,
[Import_Date] [smalldatetime] NOT NULL)

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Nov 21, 2001

I’m trying to optimize the following view so that it runs faster and to trim the code where possible. It runs for 1:57mins. Is that good or it can run much faster than that? Where do l start? It’s a view for a report. Please help l’m running on SQL 2000

CREATE View SalesTest AS
SELECT dbo.Loan.loan_No AS [Loan No], dbo.Customer.customer_No AS [Customer No], dbo.Customer.first_Name + ' ' + dbo.Customer.surname AS Customer,
dbo.Employer.employer_Name AS [Employer Name], dbo.Loan.store AS [Store No], dbo.Store.store_Name AS Store,
dbo.Region.region_Description AS Region, dbo.Financier.financier_Short + dbo.Term.term_Description AS Product,
dbo.Loan.date_Issued AS [Transaction Date], dbo.Loan.capital_Amount AS [Capital Amount], dbo.Loan.interest_Amount AS [Interest Amount],
dbo.Loan.interim_Interest_Amount AS [Interim Interest Amount], dbo.Loan.interest_Amount + dbo.Loan.interim_Interest_Amount AS [Interest2 Amount],
dbo.Loan.insurance_Amount AS [Insurance Amount], dbo.Loan.admin_Fee AS [Admin Fee], dbo.Loan.total_Amount AS [Total Amount],
dbo.Loan_Type.loan_Type_Description AS [Loan Type Description], dbo.Loan.user_Changed AS [User], dbo.Loan.first_Payment AS [First Payment],
dbo.Loan.monthly_Payment AS [Monthly Payment], dbo.Loan.repayment_Period AS [Repayment Period],
dbo.Loan.outstanding_Amount AS [Outstanding Amount], dbo.Loan.last_Payment_Date AS [Last Payment Date],
dbo.Status.status_Description AS Status, CONVERT(Char(3), dbo.Loan.loan_No, 1) AS Company, dbo.Customer.physical_Address1 AS Mine1,
dbo.Customer.physical_Address2 AS Mine2, dbo.Customer.physical_Address3 AS Mine3, dbo.Loan.maturity_Date AS [Maturity Date],
dbo.Agent.agent_Short AS Agent, dbo.Financier.financier_Short AS Financier, dbo.Loan.product AS [Loan Product],
dbo.Deduction_Detail.teba_Account_No AS [Teba Account No]
FROM dbo.Loan INNER JOIN
dbo.Customer ON dbo.Customer.customer_No = dbo.Loan.customer_No INNER JOIN
dbo.Status ON dbo.Status.status = dbo.Loan.status INNER JOIN
dbo.Store ON dbo.Store.store = dbo.Loan.store INNER JOIN
dbo.Product ON dbo.Product.product = dbo.Loan.product INNER JOIN
dbo.Product_Type ON dbo.Product_Type.product_Type = dbo.Product.product_Type INNER JOIN
dbo.Financier ON dbo.Financier.financier = dbo.Product_Type.financier INNER JOIN
dbo.Term ON dbo.Term.term = dbo.Product.term INNER JOIN
dbo.Employer ON dbo.Employer.employer = dbo.Customer.employer INNER JOIN
dbo.Region ON dbo.Region.region = dbo.Store.region INNER JOIN
dbo.Loan_Type ON dbo.Loan_Type.loan_Type = dbo.Product_Type.loan_Type INNER JOIN
dbo.Agent ON dbo.Agent.agent = dbo.Product_Type.agent INNER JOIN
dbo.Deduction_Detail ON dbo.Loan.customer_No = dbo.Deduction_Detail.customer_No AND
dbo.Loan.deduction_No = dbo.Deduction_Detail.deduction_No
WHERE (dbo.Loan.outstanding_Amount <> 0)

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How To Optimize This Slow Query?

Mar 25, 2004

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.

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How To Optimize Following Query For Execution Time

Mar 18, 2008

Hell All,
Following query takes 7 minutes to execute while using search criteria as shown below in blue text(ie. IN(2006,2007)
if criteria changes to =2006 as shown in 2),this takes 2minutes

But I want expected output as in query 1) in less time.
How to optimize following query for execution time?

1)select sum(PB.CONSN_QTY)Consumption,Count(*),PB.BillPro_Year
from tbtrans_prowaterbill PB
INNER JOIN MIDC_AREA MA
ON PB.Area_cd = MA.Area_cd INNER JOIN MIDC_Division MD ON MA.Div_CD = MD.Division_CD
INNER JOIN MIDC_Circle MC ON MD.Circle_CD = MC.Circle_CD
INNER JOIN TBMST_SubDiv TS ON MA.SubDiv_CD = TS.SubDiv_CD
INNER JOIN MIDC_Zone MZ ON MD.Zone_CD = MZ.Zone_CD
INNER JOIN tbmst_consumer TC ON PB.cons_no = TC.Cons_No
INNER JOIN TBMST_CONSTYPE TCT ON TCT.Cons_Type = TC.Cons_Type
where pb.billpro_year IN('2006','2007') and MTR_Size = 15 and TCT.Cons_Type = '1A2'
and MZ.Zone_Name = 'MUMBAI' and MC.Circle_NAME = 'MMR' and MD.Division_Name = 'Dombivli' and TS.SubDiv_DESC = 'THANE DIVISION STAFF'
group by PB.BillPro_Year





2)select sum(PB.CONSN_QTY)Consumption,Count(*),PB.BillPro_Year
from tbtrans_prowaterbill PB
INNER JOIN MIDC_AREA MA
ON PB.Area_cd = MA.Area_cd INNER JOIN MIDC_Division MD ON MA.Div_CD = MD.Division_CD
INNER JOIN MIDC_Circle MC ON MD.Circle_CD = MC.Circle_CD
INNER JOIN TBMST_SubDiv TS ON MA.SubDiv_CD = TS.SubDiv_CD
INNER JOIN MIDC_Zone MZ ON MD.Zone_CD = MZ.Zone_CD
INNER JOIN tbmst_consumer TC ON PB.cons_no = TC.Cons_No
INNER JOIN TBMST_CONSTYPE TCT ON TCT.Cons_Type = TC.Cons_Type
where pb.billpro_year = '2006' and MTR_Size = 15 and TCT.Cons_Type = '1A2'
and MZ.Zone_Name = 'MUMBAI' and MC.Circle_NAME = 'MMR' and MD.Division_Name = 'Dombivli' and TS.SubDiv_DESC = 'THANE DIVISION STAFF'
group by PB.BillPro_Year

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Help Me Optimize A Daily Events Query

Nov 1, 2006

We keep a database of events that are classified by severity. I've got a good, efficient query that gives me the grand total for these events. And I have a bad slow query that breaks down the information into daily totals.

My fast query will count the totals for 3213586 events in 4 seconds. The slow daily query takes about 60 seconds for each day.

Please help optimize my slow query!

------ Database schema is:












Column Name
Data Type
Length
Allow Nuls

1
msrepl_tran_version
uniqueidentifier
16
0

0
[time]
GMTtime (int)
4
0

0
msec
int
4
1

0
offset
GMToffset (smallint)
2
0

0
type
nameType (varchar)
15
1

0
host
nameType (varchar)
15
1

0
process
nameType (varchar)
15
1

0
dbName
nameType (varchar)
15
1

0
ptName
nameType (varchar)
15
1

0
description
descType (varchar)
47
1

0
rtuName
nameType (varchar)
15
1

0
groupName
nameType (varchar)
15
1

0
message
msgType (varchar)
131
0

0
fgInt
tinyint
1
1

0
sevInt
tinyint
1
1

0
key1
int
4
1

0
key2
int
4
1

0
spooler
tinyint
1
1

------- The database view eventView that's used by my queries:
SELECT DATEADD([second], [time] + 60 * offset, '01/01/70') AS timeStr, msec, host, process, dbName, ptName AS point, description, rtuName AS rtu, groupName, message, type, sevInt, [time]
FROM dbo.summary

------- Fast totals query:

select
(select count(*)
from [event].[dbo].[eventView]) as Events,
(select count(*)
from [event].[dbo].[eventView]
where type = 'alarm' and sevInt = 1)as Low,
(select count(*)
from [event].[dbo].[eventView]
where type = 'alarm' and sevInt = 2)as Medium,
(select count(*)
from [event].[dbo].[eventView]
where type = 'alarm' and sevInt = 3) as High,
(select count(*)
from [event].[dbo].[eventView]
where type = 'alarm' and sevInt = 4) as Low1,
(select count(*)
from [event].[dbo].[eventView]
where type = 'alarm' and sevInt = 6) as Medium1,
(select count(*)
from [event].[dbo].[eventView]
where type = 'alarm' and sevInt = 8) as High1,
(select count(*)
from [event].[dbo].[eventView]
where type = 'alarm' and sevInt = 9) as High2

------- Slow daily query:

declare @myDay datetime
declare @begDay datetime

declare @myTable
table( myDay datetime,
Events int,
Low int, Medium int,
High int, Low1 int, Medium1 int,
High1 int, High2 int )

select @myDay = getdate()

select @begDay = convert(datetime, '10/01/2006')

while @begDay <= @myDay
begin

insert into @myTable (myDay) values (convert(varchar(20), @begDay, 101))

---------------------------------------------------------------------

update @myTable set Events =
(select count(*) as Events
from [event].[dbo].[eventView]
where
convert(varchar, timeStr, 101) = convert(varchar(20), @begDay, 101))
where myDay = convert(varchar(20), @begDay, 101)

---------------------------------------------------------------------

update @myTable set Low =
(select count(*) as Low
from [event].[dbo].[eventView]
where type = 'alarm' and sevInt = 1
and convert(varchar, timeStr, 101) = convert(varchar(20), @begDay, 101))
where myDay = convert(varchar(20), @begDay, 101)

---------------------------------------------------------------------

update @myTable set Medium =
(select count(*) as Medium
from [event].[dbo].[eventView]
where type = 'alarm' and sevInt = 2
and convert(varchar, timeStr, 101) = convert(varchar(20), @begDay, 101))
where myDay = convert(varchar(20), @begDay, 101)

---------------------------------------------------------------------

update @myTable set High =
(select count(*) as High
from [event].[dbo].[eventView]
where type = 'alarm' and sevInt = 3
and convert(varchar, timeStr, 101) = convert(varchar(20), @begDay, 101))
where myDay = convert(varchar(20), @begDay, 101)

---------------------------------------------------------------------

update @myTable set Low1 =
(select count(*) as Low1
from [event].[dbo].[eventView]
where type = 'alarm' and sevInt = 4
and convert(varchar, timeStr, 101) = convert(varchar(20), @begDay, 101))
where myDay = convert(varchar(20), @begDay, 101)

---------------------------------------------------------------------

update @myTable set Medium1 =
(select count(*) as Medium1
from [event].[dbo].[eventView]
where type = 'alarm' and sevInt = 6
and convert(varchar, timeStr, 101) = convert(varchar(20), @begDay, 101))
where myDay = convert(varchar(20), @begDay, 101)

---------------------------------------------------------------------

update @myTable set High1 =
(select count(*) as High1
from [event].[dbo].[eventView]
where type = 'alarm' and sevInt = 8
and convert(varchar, timeStr, 101) = convert(varchar(20), @begDay, 101))
where myDay = convert(varchar(20), @begDay, 101)

---------------------------------------------------------------------

update @myTable set High2 =
(select count(*) as High2
from [event].[dbo].[eventView]
where type = 'alarm' and sevInt = 9
and convert(varchar, timeStr, 101) = convert(varchar(20), @begDay, 101))
where myDay = convert(varchar(20), @begDay, 101)

---------------------------------------------------------------------

select @begDay = dateadd(day,1,@begDay)

end

select * from @myTable

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Optimize Query - How To Make It An Index Seek

Jun 21, 2004

create table t1(a varchar(50) , b varchar(50))

create index i1 on t1(a)
create index i2 on t1(b)

create view v1
as
select * from t1 where isnull(a,b) = 'test'

select * from v1

The above SQL "select * from v1" is doing a table scan.
What do I do to make it perform an index seek ????

TIA

- ForXLDB

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Any Suggestions On How To Optimize A Query Written In Dynamic SQL?

Oct 15, 2007

I added the subquery and now this thing consistently takes more than five minutes to return 7100+ rows. Any suggestions? Thanks again, you guys are the best.

ddave
----------------------------
SET @StrQry1 = '(SELECT 1 AS Counter, Q1.SubsidyLevel, VEL.*
FROM dbo.ViewEligibilityPHC VEL
LEFT OUTER JOIN (SELECT *
FROM dbo.MEMB_LISHISTS l
WHERE l.LISThruDate is null
AND l.Deleted = ''0'') AS Q1 ON VEL.MEMBID = Q1.MemberID
WHERE VEL.OPTHRUDT is null
AND VEL.OPT LIKE ''' + @HPlan + ''' AND (VEL.PCP IS NULL OR VEL.PCP LIKE ''' + @Prvdr + ''')
AND VEL.HCC LIKE ''' + @HCC + ''' AND (VEL.CaseMgrID IS NULL OR VEL.CaseMgrID LIKE ''' + @CaseMngr + ''')
AND VEL.OPFROMDT <= CAST(''' + @SDate + ''' AS datetime)
AND ISNULL(VEL.OPTHRUDT, CAST(''' + @TDate + ''' AS datetime)) >= CAST(''' + @EDate + ''' AS datetime)) '

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Optimize A UNION Query With LIKE (was Query Help)

Jan 30, 2005

Hi,

SQL 2K
Table loaded using BULK INSERT with ~5 000 000 records.
CREATE TABLE [MyTable] (
[SeqNumber] int NOT NULL ,-- sequence unique number
[ObjId] int NOT NULL ,
[HierarchyLevel] varchar(255) NULL ,-- highest level = 0
[NameText] varchar(255) NULL
.
.
)

insert into MyTable
select 1, 1, 0, 'text-10'
union all select 2, 1, 1, 'text-11 state-1'
union all select 3, 1, 2, 'text-12 social-1'
union all select 4, 1, 3, 'text-13 abc social-1.1'
union all select 5, 1, 1, 'text-11 123'
union all select 6, 1, 1, 'text-11 ABCDEF'
union all select 7, 1, 2, 'text-12 bbb'
union all select 8, 1, 3, 'text-13 social-2'
union all select 9, 1, 4, 'text-14 aaa'
union all select 10, 2, 1, 'text-21 state-3'
union all select 11, 3, 5, 'text-31 state-2 social-3'

- Unique Index on SeqNumber

Query:
Select top 100 TI.*
from [dbo].[MyTable] TI
inner join [dbo].[MyTable] TL
on TL.ObjId = TI.ObjId
where (TL.[NameText] like '%state%')
and TI.[NameText] like '%social%'
and TI.HierarchyLevel > TL.HierarchyLevel
and TI.SeqNumber > TL.SeqNumber
and not exists (select *
from [dbo].[MyTable] T3
where T3.ObjId = TL.ObjId
and T3.SeqNumber > TL.SeqNumber
and T3.SeqNumber < TI.SeqNumber
and T3.HierarchyLevel <= TL.HierarchyLevel)
Union
Select T4.*
from [dbo].[MyTable] T4
where T4.[NameText] like '%state%'
and T4.[NameText] like '%social%'
order by Ti.SeqNumber

Result:
SeqNumber ObjId HierarchyLevel NameText
312text-12 social-1
413text-13 abc social-1.1
1135text-31 state-2 social-3

Could somebody help me please to optimize this query?

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Require To Optimize This Query To Remove Tomcats 'out Of Memory Error'

Jan 17, 2007

Hi i am using MS SQL 2000 db ,while executing following prepared statement query its working fine ...BUT when i remove "top 300" then tomcat giving OUT OF MEMORY ERROR!!

i think that its because of the cross join....So i want to optimize this query in such a way that it will not give "Out of memory error"
How can i re write this query?

Query :-

"select top 300 haw.DeviceID as deviceid,haw.Description as Description,haw.SerialNo as SerialNo,haw.Suffix as Suffix,haw.HWRev as HWRev,haw.Type as Type,dev.Status as Status from Hardware_PlaceHolder haw,Device_PlaceHolder dev ,Accounts ac where dev.siteId = ac.siteId and ac.CustID = ? ";

thanks in advance..

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May 5, 2015

I am querying a tableA with 1.8 million rows, it has id as its primary key and is a clustered index. I need to select all rows where I order by lastname. Its taking me 45 seconds. Is there anything i can do to optimize the query.Will creating a fulltext index on lastname If so, can you give me an example on how to create a full text index on lastname?

[Project1].[Id] AS [Id], 
[Project1].[DirectoryId] AS [DirectoryId], 
[Project1].[SPI] AS [SPI], 
[Project1].[FirstName] AS [FirstName], 
[Project1].[LastName] AS [LastName], 
[Project1].[NPI] AS [NPI], 
[Project1].[AddressLine1] AS [AddressLine1], 
[Project1].[AddressLine2] AS [AddressLine2], 

[code]...

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Please Help Me To Optimize This Sql Query, It Takes 28 Seconds To Return Result. Please Give Me A Tips Where I Went Wrong?

Aug 21, 2006

SELECT * FROM
( SELECT TOP 15 * FROM
(SELECT TOP 15 CMDS.STOCKCODE AS CODE,CMDS.STOCKNAME AS NAME,CMDS.Sector AS SEC, CMD7.REFERENCE AS REF,T1.HIGHP AS HIGH,
T1.LOW,T1.B1_CUM AS 'B/QTY', T1.B1_PRICE AS BUY,T1.S1_PRICE AS SELL,
T1.S1_CUM AS 'S/QTY', T1.D_PRICE AS LAST,T1.L_CUM AS LVOL,T1.Chg AS CHG,T1.Chgp AS CHGP, T1.D_CUM AS VOLUME,substring(T1.ST,7,6) AS TIME,
CMDS.SERIAL as SERIAL FROM CMD7,CMDS,CMD4 AS T1 WHERE T1.ST IN
(SELECT max(T2.ST) FROM CMD4 AS T2 ,CMDS WHERE
T1.SERIAL=T2.SERIAL
AND CMDS.SERIAL=T2.SERIAL
AND T2.sd='20060821'
AND CMDS.sd='20060821'
AND T2.L_CUM < '1900'
AND CMDS.sector >='1'
AND CMDS.sector <='47')
AND CMDS.SERIAL=T1.SERIAL AND
CMDS.SERIAL=CMD7.SERIAL AND
CMDS.sd='20060821' AND
CMD7.sd='20060821' AND
T1.sd='20060821' AND
T1.L_CUM < '1900' AND
CMDS.sector >='1' AND
CMDS.sector <='47' ORDER BY T1.D_CUM desc)
AS TBL1 ORDER BY VOLUME asc) AS TBL1 ORDER BY VOLUME desc;

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How To Optimize This?

Jan 27, 2008

Hi.I have a sql:  1 SELECT ForumID, Title, Description,2 (SELECT PostID3 FROM (SELECT TOP (1) PostID4 FROM Forum_Posts5 WHERE (ForumID = Forum_Forums.ForumID)6 ORDER BY PostedDate DESC) AS derivedtbl_1) AS LastPostID,7
8
9 (SELECT Title10 FROM (SELECT TOP (1) Title11 FROM Forum_Posts12 WHERE (ForumID = Forum_Forums.ForumID)13 ORDER BY PostedDate DESC) AS derivedtbl_2) AS LastPostTitle,14
15 (SELECT PostedBy16 FROM (SELECT TOP (1) PostedBy17 FROM Forum_Posts18 WHERE (ForumID = Forum_Forums.ForumID)19 ORDER BY PostedDate DESC) AS derivedtbl_3) AS PostedBy20 FROM Forum_Forums21 WHERE (BoardID = @BoardID)I must use this code 3 times: SELECT  TOP (1) PostID / Title / PostedBy FROM Forum_Posts WHERE  (ForumID = Forum_Forums.ForumID)ORDER BY PostedDate DESCPlease help me optimize this.  

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Plz Help To Optimize.

Jul 3, 2006

A table fin_cutoff contains following type of data.

fin_beg_dt | fin_end_dt
------------------------------------------------

2005-12-01 00:00:00.000 | 2005-12-31 00:00:00.000
2005-10-29 00:00:00.000 | 2005-12-01 00:00:00.000
2005-10-01 00:00:00.000 | 2005-10-29 00:00:00.000


I want to extract a row where the fin_beg_dt & fin_end_dt columns entries belong to current month

Following query is written for the same:

select fin_beg_dt,
fin_end_dt
from ecr_fin_cutoff
where month(fin_beg_dt_id) = month(getdate())
andyear(fin_dt_id)= year(getdate())
and month(fin_end_dt) = month(getdate())
and year(fin_end_dt)= year(getdate())

It is giving the appropriate results.
Please help me to optimize it.

Thanks in advance.

Shrirang

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How To Optimize The Sql Below?

Nov 8, 2006

I have a sql such sa below:

select
coalesce(T1.LocalNetID, T2.LocalNetID)as LocalNetID,coalesce(T1.BSCID, T2.BSCID)as BSCID,coalesce(T1.SiteID, T2.SiteID)as SiteID, coalesce(T1.CellID, T2.CellID)as CellID,
coalesce(T1.StrTime, T2.StrTime) as StrTime,
C10701 as '10701',C11601 as '11601'from
(
--Start for Opt_Cell_pBasicM of inner table--
(
select
LocalNetID,BSCID,SiteID, CellID,
StrTime,RecordDataTime,
C11601
from
Opt_Cell_pBasicM
where
((LocalNetID = 13 and BSCID = 2))
and
((RecordDataTime between '2006-01-01 00:01:00' and '2006-01-01 12:00:00'))
and
(GranularityPeriod <= 12)
)
--End for Opt_Cell_pBasicM of inner table--
as T1
full outer join
--Start for Opt_Cell_pCellRadioM of inner table--
(
select
LocalNetID,BSCID, SiteID, CellID,
StrTime,RecordDataTime,
C10701
from
Opt_Cell_pCellRadioM
where
(
((LocalNetID = 13 and BSCID = 2))
and
((RecordDataTime between '2006-01-01 00:01:00' and '2006-01-01 12:00:00'))
and
(GranularityPeriod <= 12)
)
)
--End for Opt_Cell_pCellRadioM of inner table--
as T2
on coalesce(T1.LocalNetID,NULL) = T2.LocalNetID and coalesce(T1.BSCID,NULL) = T2.BSCID and coalesce(T1.SiteID,NULL) = T2.SiteID and coalesce(T1.CellID,NULL) = T2.CellID
and coalesce(T1.RecordDataTime,NULL) = T2.RecordDataTime
--End for first join--
)



when num of the records of Opt_Cell_pBasicM and Opt_Cell_pCellRadioM
is greater than 1000000, the speed is very slow , how to optimize it ?



thks

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My God, Who Can Help Me Optimize The Sql?

Nov 16, 2006

the sql of  create table is below:

CREATE TABLE [dbo].[Examp] (
 [LocalNetID] [int] NOT NULL ,
 [BSCID] [int] NOT NULL ,
 [SiteID] [int] NOT NULL ,
 [CellID] [int] NOT NULL ,
 [StrTime] [varchar] (30) COLLATE Chinese_PRC_CI_AS NOT NULL ,
 [M1] [int] NULL ,
 [M2] [int] NULL ,
 [M3] [int] NULL ,
 [M4] [int] NULL ,
 [M5] [int] NULL ,
 [M6] [int] NULL ,
 [M7] [int] NULL ,
 [M8] [int] NULL ,
 [M9] [int] NULL ,
 [M10] [int] NULL ,
 [M11] [int] NULL ,
 [M12] [int] NULL ,
 [M13] [int] NULL ,
 [M14] [int] NULL ,
 [M15] [int] NULL ,
 [M16] [int] NULL ,
 [M17] [int] NULL ,
 [M18] [int] NULL ,
 [M19] [int] NULL ,
 [M20] [int] NULL ,
 [M21] [int] NULL ,
 [M22] [int] NULL ,
 [M23] [int] NULL ,
 [M24] [int] NULL ,
 [M25] [int] NULL ,
 [M26] [int] NULL ,
 [M27] [int] NULL ,
 [M28] [int] NULL ,
 [M29] [int] NULL ,
 [M30] [int] NULL ,
 [M31] [int] NULL ,
 [M32] [int] NULL ,
 [M33] [int] NULL ,
 [M34] [int] NULL ,
 [M35] [int] NULL ,
 [M36] [int] NULL ,
 [M37] [int] NULL ,
 [M38] [int] NULL ,
 [M39] [int] NULL ,
 [M40] [int] NULL ,
 [M41] [int] NULL ,
 [M42] [int] NULL ,
 [M43] [int] NULL ,
 [M44] [int] NULL ,
 [M45] [int] NULL ,
 [M46] [int] NULL ,
 [M47] [int] NULL ,
 [M48] [int] NULL ,
 [M49] [int] NULL ,
 [M50] [int] NULL ,
 [M51] [int] NULL ,
 [M52] [int] NULL ,
 [M53] [int] NULL ,
 [M54] [int] NULL ,
 [M55] [int] NULL ,
 [M56] [int] NULL ,
 [M57] [int] NULL ,
 [M58] [int] NULL ,
 [M59] [int] NULL ,
 [M60] [int] NULL ,
 [M61] [int] NULL ,
 [M62] [int] NULL ,
 [M63] [int] NULL ,
 [M64] [int] NULL ,
 [M65] [int] NULL ,
 [M66] [int] NULL ,
 [M67] [int] NULL ,
 [M68] [int] NULL ,
 [M69] [int] NULL ,
 [M70] [int] NULL ,
 [M71] [int] NULL ,
 [M72] [int] NULL ,
 [M73] [int] NULL ,
 [M74] [int] NULL ,
 [M75] [int] NULL ,
 [M76] [int] NULL ,
 [M77] [int] NULL ,
 [M78] [int] NULL ,
 [M79] [int] NULL ,
 [M80] [int] NULL ,
 [M81] [int] NULL ,
 [M82] [int] NULL ,
 [M83] [int] NULL ,
 [M84] [int] NULL ,
 [M85] [int] NULL ,
 [M86] [int] NULL ,
 [M87] [int] NULL ,
 [M88] [int] NULL ,
 [M89] [int] NULL ,
 [M90] [int] NULL ,
 [M91] [int] NULL ,
 [M92] [int] NULL ,
 [M93] [int] NULL ,
 [M94] [int] NULL ,
 [M95] [int] NULL ,
 [M96] [int] NULL ,
 [M97] [int] NULL ,
 [M98] [int] NULL ,
 [M99] [int] NULL ,
 [M100] [int] NULL

)

and LocalNetID, BSCID, SiteID, CellID, StrTime are set index,

the sql i want to query is :

select
LocalNetID, BSCID, SiteID, CellID, StrTime,
Sum(M1) as M1,Sum(M2) as M2,Sum(M3) as M3,Sum(M4) as M4,Sum(M5) as M5,Sum(M6) as M6,Sum(M7) as M7,Sum(M8) as M8,Sum(M9) as M9,Sum(M10) as M10,Sum(M11) as M11,Sum(M12) as M12,Sum(M13) as M13,Sum(M14) as M14,Sum(M15) as M15,Sum(M16) as M16,Sum(M17) as M17,Sum(M18) as M18,Sum(M19) as M19,Sum(M20) as M20,Sum(M21) as M21,Sum(M22) as M22,Sum(M23) as M23,Sum(M24) as M24,Sum(M25) as M25,Sum(M26) as M26,Sum(M27) as M27,Sum(M28) as M28,Sum(M29) as M29,Sum(M30) as M30,Sum(M31) as M31,Sum(M32) as M32,Sum(M33) as M33,Sum(M34) as M34,Sum(M35) as M35,Sum(M36) as M36,Sum(M37) as M37,Sum(M38) as M38,Sum(M39) as M39,Sum(M40) as M40,Sum(M41) as M41,Sum(M42) as M42,Sum(M43) as M43,Sum(M44) as M44,Sum(M45) as M45,Sum(M46) as M46,Sum(M47) as M47,Sum(M48) as M48,Sum(M49) as M49,Sum(M50) as M50,Sum(M51) as M51,Sum(M52) as M52,Sum(M53) as M53,Sum(M54) as M54,Sum(M55) as M55,Sum(M56) as M56,Sum(M57) as M57,Sum(M58) as M58,Sum(M59) as M59,Sum(M60) as M60,Sum(M61) as M61,Sum(M62) as M62,Sum(M63) as M63,Sum(M64) as M64,Sum(M65) as M65,Sum(M66) as M66,Sum(M67) as M67,Sum(M68) as M68,Sum(M69) as M69,Sum(M70) as M70,Sum(M71) as M71,Sum(M72) as M72,Sum(M73) as M73,Sum(M74) as M74,Sum(M75) as M75,Sum(M76) as M76,Sum(M77) as M77,Sum(M78) as M78,Sum(M79) as M79,Sum(M80) as M80,Sum(M81) as M81,Sum(M82) as M82,Sum(M83) as M83,Sum(M84) as M84,Sum(M85) as M85,Sum(M86) as M86,Sum(M87) as M87,Sum(M88) as M88,Sum(M89) as M89,Sum(M90) as M90,Sum(M91) as M91,Sum(M92) as M92,Sum(M93) as M93,Sum(M94) as M94,Sum(M95) as M95,Sum(M96) as M96,Sum(M97) as M97,Sum(M98) as M98,Sum(M99) as M99,Sum(M100) as M100
from
(
select
LocalNetID, BSCID, SiteID, CellID, StrTime,
Sum(M1) as M1,Sum(M2) as M2,Sum(M3) as M3,Sum(M4) as M4,Sum(M5) as M5,Sum(M6) as M6,Sum(M7) as M7,Sum(M8) as M8,Sum(M9) as M9,Sum(M10) as M10,Sum(M11) as M11,Sum(M12) as M12,Sum(M13) as M13,Sum(M14) as M14,Sum(M15) as M15,Sum(M16) as M16,Sum(M17) as M17,Sum(M18) as M18,Sum(M19) as M19,Sum(M20) as M20,Sum(M21) as M21,Sum(M22) as M22,Sum(M23) as M23,Sum(M24) as M24,Sum(M25) as M25,Sum(M26) as M26,Sum(M27) as M27,Sum(M28) as M28,Sum(M29) as M29,Sum(M30) as M30,Sum(M31) as M31,Sum(M32) as M32,Sum(M33) as M33,Sum(M34) as M34,Sum(M35) as M35,Sum(M36) as M36,Sum(M37) as M37,Sum(M38) as M38,Sum(M39) as M39,Sum(M40) as M40,Sum(M41) as M41,Sum(M42) as M42,Sum(M43) as M43,Sum(M44) as M44,Sum(M45) as M45,Sum(M46) as M46,Sum(M47) as M47,Sum(M48) as M48,Sum(M49) as M49,Sum(M50) as M50,Sum(M51) as M51,Sum(M52) as M52,Sum(M53) as M53,Sum(M54) as M54,Sum(M55) as M55,Sum(M56) as M56,Sum(M57) as M57,Sum(M58) as M58,Sum(M59) as M59,Sum(M60) as M60,Sum(M61) as M61,Sum(M62) as M62,Sum(M63) as M63,Sum(M64) as M64,Sum(M65) as M65,Sum(M66) as M66,Sum(M67) as M67,Sum(M68) as M68,Sum(M69) as M69,Sum(M70) as M70,Sum(M71) as M71,Sum(M72) as M72,Sum(M73) as M73,Sum(M74) as M74,Sum(M75) as M75,Sum(M76) as M76,Sum(M77) as M77,Sum(M78) as M78,Sum(M79) as M79,Sum(M80) as M80,Sum(M81) as M81,Sum(M82) as M82,Sum(M83) as M83,Sum(M84) as M84,Sum(M85) as M85,Sum(M86) as M86,Sum(M87) as M87,Sum(M88) as M88,Sum(M89) as M89,Sum(M90) as M90,Sum(M91) as M91,Sum(M92) as M92,Sum(M93) as M93,Sum(M94) as M94,Sum(M95) as M95,Sum(M96) as M96,Sum(M97) as M97,Sum(M98) as M98,Sum(M99) as M99,Sum(M100) as M100
from
(
select
LocalNetID, BSCID, SiteID, CellID, StrTime,
Sum(M1) as M1,Sum(M2) as M2,Sum(M3) as M3,Sum(M4) as M4,Sum(M5) as M5,Sum(M6) as M6,Sum(M7) as M7,Sum(M8) as M8,Sum(M9) as M9,Sum(M10) as M10,Sum(M11) as M11,Sum(M12) as M12,Sum(M13) as M13,Sum(M14) as M14,Sum(M15) as M15,Sum(M16) as M16,Sum(M17) as M17,Sum(M18) as M18,Sum(M19) as M19,Sum(M20) as M20,Sum(M21) as M21,Sum(M22) as M22,Sum(M23) as M23,Sum(M24) as M24,Sum(M25) as M25,Sum(M26) as M26,Sum(M27) as M27,Sum(M28) as M28,Sum(M29) as M29,Sum(M30) as M30,Sum(M31) as M31,Sum(M32) as M32,Sum(M33) as M33,Sum(M34) as M34,Sum(M35) as M35,Sum(M36) as M36,Sum(M37) as M37,Sum(M38) as M38,Sum(M39) as M39,Sum(M40) as M40,Sum(M41) as M41,Sum(M42) as M42,Sum(M43) as M43,Sum(M44) as M44,Sum(M45) as M45,Sum(M46) as M46,Sum(M47) as M47,Sum(M48) as M48,Sum(M49) as M49,Sum(M50) as M50,Sum(M51) as M51,Sum(M52) as M52,Sum(M53) as M53,Sum(M54) as M54,Sum(M55) as M55,Sum(M56) as M56,Sum(M57) as M57,Sum(M58) as M58,Sum(M59) as M59,Sum(M60) as M60,Sum(M61) as M61,Sum(M62) as M62,Sum(M63) as M63,Sum(M64) as M64,Sum(M65) as M65,Sum(M66) as M66,Sum(M67) as M67,Sum(M68) as M68,Sum(M69) as M69,Sum(M70) as M70,Sum(M71) as M71,Sum(M72) as M72,Sum(M73) as M73,Sum(M74) as M74,Sum(M75) as M75,Sum(M76) as M76,Sum(M77) as M77,Sum(M78) as M78,Sum(M79) as M79,Sum(M80) as M80,Sum(M81) as M81,Sum(M82) as M82,Sum(M83) as M83,Sum(M84) as M84,Sum(M85) as M85,Sum(M86) as M86,Sum(M87) as M87,Sum(M88) as M88,Sum(M89) as M89,Sum(M90) as M90,Sum(M91) as M91,Sum(M92) as M92,Sum(M93) as M93,Sum(M94) as M94,Sum(M95) as M95,Sum(M96) as M96,Sum(M97) as M97,Sum(M98) as M98,Sum(M99) as M99,Sum(M100) as M100
from
(
select
LocalNetID, BSCID, SiteID, CellID, StrTime,
Sum(M1) as M1,Sum(M2) as M2,Sum(M3) as M3,Sum(M4) as M4,Sum(M5) as M5,Sum(M6) as M6,Sum(M7) as M7,Sum(M8) as M8,Sum(M9) as M9,Sum(M10) as M10,Sum(M11) as M11,Sum(M12) as M12,Sum(M13) as M13,Sum(M14) as M14,Sum(M15) as M15,Sum(M16) as M16,Sum(M17) as M17,Sum(M18) as M18,Sum(M19) as M19,Sum(M20) as M20,Sum(M21) as M21,Sum(M22) as M22,Sum(M23) as M23,Sum(M24) as M24,Sum(M25) as M25,Sum(M26) as M26,Sum(M27) as M27,Sum(M28) as M28,Sum(M29) as M29,Sum(M30) as M30,Sum(M31) as M31,Sum(M32) as M32,Sum(M33) as M33,Sum(M34) as M34,Sum(M35) as M35,Sum(M36) as M36,Sum(M37) as M37,Sum(M38) as M38,Sum(M39) as M39,Sum(M40) as M40,Sum(M41) as M41,Sum(M42) as M42,Sum(M43) as M43,Sum(M44) as M44,Sum(M45) as M45,Sum(M46) as M46,Sum(M47) as M47,Sum(M48) as M48,Sum(M49) as M49,Sum(M50) as M50,Sum(M51) as M51,Sum(M52) as M52,Sum(M53) as M53,Sum(M54) as M54,Sum(M55) as M55,Sum(M56) as M56,Sum(M57) as M57,Sum(M58) as M58,Sum(M59) as M59,Sum(M60) as M60,Sum(M61) as M61,Sum(M62) as M62,Sum(M63) as M63,Sum(M64) as M64,Sum(M65) as M65,Sum(M66) as M66,Sum(M67) as M67,Sum(M68) as M68,Sum(M69) as M69,Sum(M70) as M70,Sum(M71) as M71,Sum(M72) as M72,Sum(M73) as M73,Sum(M74) as M74,Sum(M75) as M75,Sum(M76) as M76,Sum(M77) as M77,Sum(M78) as M78,Sum(M79) as M79,Sum(M80) as M80,Sum(M81) as M81,Sum(M82) as M82,Sum(M83) as M83,Sum(M84) as M84,Sum(M85) as M85,Sum(M86) as M86,Sum(M87) as M87,Sum(M88) as M88,Sum(M89) as M89,Sum(M90) as M90,Sum(M91) as M91,Sum(M92) as M92,Sum(M93) as M93,Sum(M94) as M94,Sum(M95) as M95,Sum(M96) as M96,Sum(M97) as M97,Sum(M98) as M98,Sum(M99) as M99,Sum(M100) as M100
from
(
select
LocalNetID, BSCID, SiteID, CellID, StrTime,
M1 , M2 , M3 , M4 , M5 , M6 , M7 , M8 , M9 , M10 ,M11 , M12 , M13 , M14 , M15 , M16 , M17 , M18 , M19 , M20 ,M21 , M22 , M23 , M24 , M25 , M26 , M27 , M28 , M29 , M30 ,M31 , M32 , M33 , M34 , M35 , M36 , M37 , M38 , M39 , M40 ,M41 , M42 , M43 , M44 , M45 , M46 , M47 , M48 , M49 , M50 ,M51 , M52 , M53 , M54 , M55 , M56 , M57 , M58 , M59 , M60 ,M61 , M62 , M63 , M64 , M65 , M66 , M67 , M68 , M69 , M70 ,M71 , M72 , M73 , M74 , M75 , M76 , M77 , M78 , M79 , M80 ,M81 , M82 , M83 , M84 , M85 , M86 , M87 , M88 , M89 , M90 ,M91 , M92 , M93 , M94 , M95 , M96 , M97 , M98 , M99 , M100
from examp
) as T1
group by
LocalNetID, BSCID, SiteID, CellID, StrTime
) as T2
group by
LocalNetID, BSCID, SiteID, CellID, StrTime
) as T3
group by
LocalNetID, BSCID, SiteID, CellID, StrTime
) as T4
group by
LocalNetID, BSCID, SiteID, CellID, StrTime

when there is no data in table, it will take more than 3 minutes on my computer!

how can i optimize the sql to speed it?

thks

 

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Hi, We have surveys that gather data and we're trying to find the best way to query this data for reporting. It is not too late to change everything so we're open to any suggestions. Here is my current setup:

Results table from which each row represents a user that filled in the survey so it contains a unique identifier, a survey identifier and some other data which we use elsewhere.

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