Hi All,
I used a data flow task, and when trying to transfer data from a OLE DB Source (records ~ 75 lac) to a destination OLE DB Source, SSIS fails at the middle giving an error saying the Transaction log got filled, try again after clearing the same.
My query is what is the most efficient way to transfer say records more than 50 lac ensuring that it doesn't fail in the middle?
Thanks in Advance,
Mithun.
In
one of our forth coming projects, with ASP.Net/C#/MSSQL Server, We have
to deal with a Business table having about 15 millions of records. We
want to know, that which methodologies should we adopt, both regarding
front end and back end perspective, so the site could give optimised
performance. Also in place of a Dedicated Server, the Hosting Company
provides MSDE (that come with .net). Will this create any problem with
this project, that have such a huge table? Should we go for some
advanced database technique, such as, Clustering, Spliting Tables, etc.
Followings are the fields that the business table contains:
ID, Category ID (which comes from a Category table, each business is
under a category), BusinessName, SignupDate, Address1, Address2, Phone
Number,
Hours Of Operation, Years in Business, LicenseNumber, DiscountCoupon, Website
In the full recovery model, if i run a transaction that inserts 10MB of data into a table, then 10 MB of data is moved in the data file. Does this mean then that the log file will grow by exactly 10MB as well?
I understand that all transactions are logged to the log file to enable rollback and point in time recovery, but what is actually physically stored in the log file for this transactions record? Is it the text of the command from the transaction or the actual physical data from that transaction?
I ask because say if I have two drives, one with 5MB/s write speed for the log file and one with 10MB/s write speed for the data file, if I start trying to insert 10 MB of data per second into the table, am I going to be limited to 5MB/s by the log file drive, or is SQL server not going to try and log all 10 MB each second to the log file?
Hi,I've an application, lets call it simply "A", which creates in a Microsoft Sql Database two huge tables.Lets call them "table1" and "table2"It safes really much data into this tables.After application "A" has finished another application is executed which deletes this two tables.Then application "A" is started again and it will create this two tables again, but the amount of data becomes bigger.It can only proceed if the tables were deleted completely before and the database is empty. This is the procedure which I repeat very often, but everytime the amount of data becomes bigger (table1 and table2 becomes bigger).A couple if times it works fine, but once it seems data becomes too big and application "A" fails. Mostlikely because the data wasnt removed correctly / completely. This is my code of deleting the two tables, maybee there is something I have to change:</p><p> try { SqlConnectionStringBuilder builder = new SqlConnectionStringBuilder("Server=mycomputerdbname;Integrated Security=SSPI;" + "Initial Catalog=testing"); builder["Server"] = "(local)dbname"; builder["Connect Timeout"] = 10; builder["Trusted_Connection"] = true; builder["Initial Catalog"] = ((ComponentConfiguration)this.componentConfig).Persistency.DatabaseName; SqlConnection sqlconnection = new SqlConnection(); sqlconnection.ConnectionString = builder.ConnectionString; sqlconnection.Open(); SqlCommand cmd1 = new SqlCommand("DROP TABLE table1"); // TO Do delete all tables SqlCommand cmd2 = new SqlCommand("DROP TABLE table2"); // TO Do delete all tables cmd1.Connection = sqlconnection; cmd2.Connection = sqlconnection; cmd1.ExecuteNonQuery(); Thread.Sleep(7000); cmd2.ExecuteNonQuery(); Thread.Sleep(7000); sqlconnection.Close(); Thread.Sleep(3000); } catch { }</p><p> </p><p> Thanks for help! mulata
View 6 Replies View RelatedI have a query similar to the following. The intent of this query is to retrieve the top 6 records meeting the specified criteria (LOGTYPENAME = 'Process Status Start' OR LOGTYPENAME = 'Process Status End' ) based on most recent dates. Please keep in mind that I expect to return up to 6 records for each unique LogProcessName. This could be thousands of different LogProcessNames with up to 6 records for each.
1) The table I am executing against currently is very large in size and thus takes a long time to execute against. It would seem there must be a more efficient query to get the results I am looking for?
2) CTE doesn't work on SQL 2000. I need a query that does.
3) I cannot modify the database itself in the process.
;WITH cte AS (
SELECT [LogProcessName], [LogBody], [LogDate], [LogGUID], row_number()
OVER(PARTITION BY [LogProcessName]
ORDER BY [LogDate] DESC)
AS RN
FROM [LOGTABLE]
WHERE [LogTypeGUID] IN (
SELECT LogTypeGUID
FROM LOGTYPE
WHERE LogTypeName = 'Process Status Start'
OR LogTypeName = 'Process Status End' ) )
SELECT *
FROM cte
WHERE RN = 1 OR RN = 2 OR RN = 3 OR RN = 4 OR RN = 5 OR RN = 6
ORDER BY [LogProcessName] DESC, [LogDate] DESC
Does anybody else have any idea that would yield the results that I am looking for and take into account items 1-3 above?
Thanks in advance.
Hello
Im searching for a solution to set all matrix row or cell the same height.
it schoud looks like this example:
This is a simple matrix
test a
text b
text c
text d
text e
text f
text g
This is a matrix with all the same row-height.
test a
text b
.
text c
.
.
text d
text e
text f
text g
.
.
Thx you a lot
I need a little help here..I want to transfer ONLY new records AND update any modified recordsfrom Oracle into SQL Server using DTS. How should I go about it?a) how do I use global variable to get max date.Where and what DTS task should I use to complete the job? Data DrivenQuery? Transform data task? How ? can u give me samples. Perhaps youcan email me the Demo Package as well.b) so far, what I did was,- I have datemodified field in my Oracle table so that I can comparewith datelastrun of my DTS package to get new records- records in Oracle having datemodified >Max(datelastrun), and transferto SQL Server table.Now, I am stuck as to where should I proceed - how can I transfer theserecords?Hope u can give me some lights. Thank you in advance.
View 2 Replies View RelatedHi All,I've the following table with a PK defined on an IDENTITY column(INSERT_SEQ):CREATE TABLE MYDATA (MID NUMERIC(19,0) NOT NULL,MYVALUE FLOAT NOT NULL,TIMEKEY INTEGER NOT NULL,TIMEKEY_DTTM DATETIME NULL,IID NUMERIC(19,0) NOT NULL,EID NUMERIC(19,0) NOT NULL,INSERT_SEQ NUMERIC(19,0) IDENTITY(1,1) NOT NULL)GOALTER TABLE MYDATAADD CONSTRAINT PK_MYDATAPRIMARY KEY (INSERT_SEQ)GOThe TIMEKEY_DTTM field is generated, from the value actually insertedinto theTIMEKEY field, by the following trigger:CREATE TRIGGER TIMEKEY1ON MYDATAFOR INSERT ASBEGINDECLARE @M_TIMEKEY_DTTM DATETIMESELECT @M_TIMEKEY_DTTM = DATEADD(SECOND, INS.TIMEKEY +EP.GMT_OFFSET * 0 ,'1970-01-01 00:00:00.000')FROM INSERTED INS, LOCATIONINFO EPWHERE INS.EID = EP.EIDUPDATE MYDATASET TIMEKEY_DTTM = @M_TIMEKEY_DTTMFROM INSERTED INS, MYDATA MDWHERE MD.INSERT_SEQ = INS.INSERT_SEQENDGOThere is also a composite, non unique, index defined on thetuple:(MID,IID,TIMEKEY,EID)CREATE INDEX IX_METDATA ON MYDATA (MID,IID,TIMEKEY,EID)GOAs a consequence of an application design change, I would also changethis index to be UNIQUE, but when I try to drop and create it I get anerror, because the tables stores some duplicated rows...In order to succesfully upgrade the index definition, I wrote some DMLstaementsto lookup and remove the duplicated rows, keeping only the firstrecord inserted, i.e. the one with the lowest INSERT_SEQ:---- This table stores then umber of duplicated records eventuallydiscovered-- into the MYDATA table; the initial value for the NUM_DUPLICATESfield is-- 0 (no duplicated record)--DROP TABLE DUPLICATESGOCREATE TABLE DUPLICATES (TABLENAME VARCHAR(17),NUM_DUPLICATES NUMERIC(19,0) )GOINSERT INTO DUPLICATES VALUES ('MYDATA',0)GOINSERT INTO DUPLICATES VALUES ('CATEGORIESDATA',0)GO---- ///////// CLEAN UP OF MYDATA TABLE--DROP TABLE TMP_MYDATAGOCREATE TABLE TMP_MYDATA (MID NUMERIC(19,0) NOT NULL,TIMEKEY INTEGER NOT NULL,IID NUMERIC(19,0) NOT NULL,EID NUMERIC(19,0) NOT NULL,INSERT_SEQ NUMERIC(19,0) )GO---- Insert into the TMP_MYDATA table all the duplicated records for-- the tuple (MID,IID,TIMEKEY,EID) and NULL for the INSERT_SEQ field--INSERT INTO TMP_MYDATA (MID,IID,TIMEKEY,EID)SELECT MID,IID,TIMEKEY,EIDFROM MYDATAGROUP BY MID,IID,TIMEKEY,EIDHAVING COUNT(*)>1GO---- Updates the INSERT_SEQ field to the lowest value in the group-- of duplicated records--UPDATE TMP_MYDATASET TMP_MYDATA.INSERT_SEQ = (SELECT MIN(INSERT_SEQ)FROM MYDATAWHERE TMP_MYDATA.MID = MYDATA.MID ANDTMP_MYDATA.IID = MYDATA.IID ANDTMP_MYDATA.TIMEKEY = MYDATA.TIMEKEY ANDTMP_MYDATA.EID = MYDATA.EID )GO---- Updates the value of NUM_DUPLICATES for the MYDATA table.--UPDATE DUPLICATESSET NUM_DUPLICATES = (SELECT COUNT(*) FROM TMP_MYDATA)WHERE TABLENAME = 'MYDATA'GO---- Delete from the MYDATA table all the duplicated records,-- keeping only the row with the lowest INSERT_SEQ-- The delete is performed only if there are duplicated recors;-- this is achieved using a "short circuit" AND on the number ofrecords-- stored into the NUM_DUPLICATES field of the DUPLICATES table for-- the MYDATA table...--DELETE FROM MYDATAWHERE ( SELECT NUM_DUPLICATES FROM DUPLICATES WHERE TABLENAME ='MYDATA') > 0 ANDEXISTS ( SELECT 1FROM TMP_MYDATAWHERE MYDATA.MID = TMP_MYDATA.MID ANDMYDATA.IID = TMP_MYDATA.IID ANDMYDATA.TIMEKEY = TMP_MYDATA.TIMEKEY ANDMYDATA.EID = TMP_MYDATA.EID ANDMYDATA.INSERT_SEQ > TMP_MYDATA.INSERT_SEQ )GOThis tecnique works fine on a normal table (1M recs) but is not veryperformanton huge tables (>10M records)!Do you know a better way to achieve the task of removing all theduplicates records, preserving the lowest INSERT_SEQ betwee theduplicates and also preserving the sequence seed, so that a new recordinserted at time t1>t0 is enumerated with an INSERT_SEQ|t1 >max(INSERT_SEQ)|t0 ?Thanks a lot for your help!PatrizioPS. sorry for such a large post!
View 1 Replies View RelatedHi Everyone,
We have a large test database with million of records for more than company site Code. Sometime we want to refresh the data of that database for one or more site Codes.
In order to do that I have to delete all records of the site code we want to refresh on the test database first then copy a new set of data from production database over. Since we refresh data based on the site code therefore I have to use the Delete command instead of Truncate.
Since this is a huge database with thousand of tables and million of records per table I have a performance issues with delete command. So what would be the best to delete a large number of records without writing any information to database log file?
FYI: The Recovery model of this database is Simple
Regards,
Jdang
Is there any way how to create indexies after insertion of any
number of records (I dont want to create index after insertion of every record,
but for example after insertion of 1000 records) ?
I heard it should be possible with „bulk insert“ or with
transactions. Is it right ? I need do this with MS SQL Server 2005 (Workgroup
edition).
Thank you for your ideas!
Jan
I have a table with 35,000 records in it. I want to update a value in column A for only the first 5000 records, leaving the value in Column A for the remaining 30,000 records as it is now. What would be the command I would use to update Column A for the first 5000 records.
Thanks,
Hello all - I currently have a project that has a gridview on the front end. The user can select multiple items from this grid, hit a button and all of the selected records should be updated in the process. However, this resultset can have a large amount of data coming back, and I'm stumped on how to pass all of the ID's to the sp. I'd rather not call the SP for each record selected, as there could be 1,000 items selected, and well, I'd rather not call the SP 1000 times :p. I thought of generating a comma delimited list as I'm looping through the grid and using dynamic sql, but the IDs are about 6-7 numbers long, and including comma, would take up almost all of the max space in a varchar.
Are there any good solutions to this problem? Passing the items as an array? Generating a data table in .NET and passing that?
Any help would be appreciated.
-Jaime
A friend reminded me of a problem we tried to solve a few years ago and were unsuccessful. Below is a copy of the email he sent me. We would very much appreciate any ideas from the community. Thanks!Lets start with a simple schema where you have 4
tables:
I am copying data from database to an excel file through SSIS. database is MS SQL 2005 and BIDS is also 2005.However, the job doing this task fails every time.As per investigation, the result of the query is more than 100,000 rows and we know that excel has a limit of 65000 rows of data.Is there a way of setting the limit up? or something? a better approach maybe so that everything will be copied to the excel file successfully.
The PrimeOutput method on component "Source - Query" (1) returned error code 0xC02020C4. The component returned a failure code when the pipeline engine called PrimeOutput(). The meaning of the failure code is defined by the component, but the error is fatal and the pipeline stopped executing. There may be error messages posted before this with more information about the failure. End Error Error: 2015-10-22 04:34:58.05 Code: 0xC0047021
Source: Data Flow Task
Description: SSIS Error Code DTS_E_THREADFAILED.
Thread "SourceThread0" has exited with error code 0xC0047038. There may be error messages posted before this with more information on why the thread has exited. End Error DTExec: The package execution returned DTSER_FAILURE (1). Started: 4:30:00 AM Finished: 4:35:05 AM Elapsed: 304.844 seconds. The package execution failed. The step failed. "
Hi ,
How to INsert and Update Large Amount of Records (4 Lacs) into Destination Table Through Business Intelligence Studio Using SSIS Pacakge .How to Achieve this .i tryed with left outer join & conditional split but the problem its not able to insert & update records simultaneously . can any one give me a sample .
Thanks & Regards
Jeyakumar.M
Hi!
I have 2 tables (both have the same structure):
ID -> bigint (identity, not for replication, primary key)
Url -> nvarchar(1000)
MainUrl -> nvarchar(1000)
Tbl1 cantains about 0,5 mln records, and tbl2 - 1 mln.
What I need, is to copy records from tbl2 to tbl1. But records in tbl1 are unique, and it can't change. (Unique must be only "Url"; (and ID, but it's automatic)). How can I do this in fast way? Now I'm using SELECT for each record in tbl2 to see if it exist in tbl1. But it's a bit slow... Is there any faster method? (One thing: I'm beginner in databeses, so I'm wrote VB application to transfer records. How can I do it using only Microsoft Sql server?)
--------------
I'm forgot to write, I'm using MsSql 2005.
Hi,
I am facing a big problem in data transfer from Access To SQL. Well the problem is i want to transfer nr about 50 lacs record from access to sql. at my side where sql server is complete install i could not find any problem and it transfer all data in 5 to 7 mins. now problem is at client side we not install entire sql but we install sql runtime which is available with installshied. and whenever i start to transfer data there is another exe called DLLHost.exe is run and it ate near about 70% to 75% Memory of system. well i use sql OPENROWSET statement and as soon as that statement fire at machine where entire sql is not install and only runtime install it starts to eat system memory so instead of transfer all data in 5 to 10 min it take more then 6 hrs bcaz dllhost.exe eat memory. is there any better way to transfer this records more fast pls let me know.
pls. help me to get resolve this problem.
thanks for help ,
pls help me.
SQL 7 SP1 NT4 SP5
I have a TRANSACTION table with 150 million rows.
I have a USER table.
Each user has about 600 records in the TRANSACTION table.
The TRANSACTION cluster index is on USERID + RECID . The second index is on USERID + Fieldx + Fieldy.
The TRANSACTION table gets about 1.4 million inserts in a normal day and about 40,000 updates.
I want to go through the USER table and delete all users who have not visited me in a while.
I want to do this without substantially hindering performance in a production environment. I can perform this over a week period or two if needed.
The best way I thought of doing this was to grab x amount of users in a cursor and loop through deleting their corresponding TRANSACTION records.
Does anyone have any ideas on a better way. What is going to happen to my indices during this time ?
Thanks !!!
I am trying to transfer 90 million records/250 bytes row length from oracle 8i to sqlserver 2000
using DTS and it is taking 2 seconds to transfer 1000 records. Is there any way I can transfer 90 million records fast at all. This will take more than 10 hours to transfer it.
Thanks,
Ranjan
Hello,
I have a VB.NET Windows Application with a SQL 2K5 back end.
The application creates a view which produces approximately 5 million records. I am attempting to transfer these records to a table programmatically, but every attempt causes a timeout. The name of the source server and view will change depending on the client's installation.
Using the standard SQL connection/command objects with the "INSERT INTO TABLE (SELECT * FROM VIEW)" doesn't work at all.
What is the best way to transfer these records programmatically?
Thanks,
-Torrwin
I'm creating a temporary table in a Sql 2005 stored procedure that contains the transaction amount entered in a period <= the period the user enters.
I can return that amount in my result set. But I also need to separate out by account the amounts just in the period = the period the user enters. There can be many entries or no entries in any period. I populate the temporary table this way:
SELECT
t.gl7accountsid,
a.accountnumber,
a.description,
a.category,
t.POSTDATE,
t.poststatus,
t.TRANSACTIONTYPE,
t.AMOUNT,
case
when t.transactiontype=2 then amount * (-1)
else amount
end as transamount,
t.ENCUMBRANCESTATUS,
t.gl7fiscalperiodsid
FROM
UrsinusCollege.dbo.gl7accounts a
join
ursinuscollege.dbo.gl7transactions t on
a.gl7accountsid=t.gl7accountsid
where
(t.gl7fiscalperiodsid >= 97
And
t.gl7fiscalperiodsid<=@FiscalPeriod_identifier)
And poststatus in (2,3)
and left(a.accountnumber,5) between '2-110' and '2-999'
And right(a.accountnumber,4) > 7149
And not(right(a.accountnumber,4)) in ('7171','7897')
order by a.accountnumber
Later I create a temporary table that contains budget information. I join these 2 temporary tables to produce my result set. But I don't know how to get the information for just one period. For example, if the user enters 99 as the FiscalPeriod_identifier, I need a separate field that contains only those amounts(if any) that were entered for each account in Period 99.
Can anyone help? It may be that I am not seeing the forest for the trees, but I can't figure it out.
Thanks very much.
Sue
Hi all,
I have a table named Prescription that consists of attributes like PatientId, MedicineCode, MedicineName, Prices of different drugs, quantity of different drugs(e.g 1,2,3,10), date .
I would like to get a summary of the total number and amount of different drugs in a specific period, the total amount of each type of drug.
I kindly request for help.
Thanx in advance.
Ronnie
I am using transfer manager in SQL 6.5 to copy a database and
all objects with data to another server. Transfer manager is not recreating all stored procedures. This even happens when I used it to another database on the same server. Any ideas??
Is it possible/advisable when transfering very large amounts of data from server to server to:
trasnfer the data to a new table first
second alter new table adding indexes, defaults, ets based on original table
if it is what flow item would be used to transfer/alter the indexes and defaults?
I'm very new to ssis so the more detail you can give the better.
Thanks
Hi there,
I'm using a Repeater at the moment which is bound to a SQLDataSource. I expect much load on that Website, should I choose another DataSource? Which other DataSource is better if it's about Performance?
I read some stuff about the SQLAdapter and a DataSet.. is that better in performance? Why is it better?
What about LinQ?
Thanks a lot for any clarification.
Hi all, I have the code listed below and feel that it could be run much more efficiently. I run this same code for attrib2, 3, description, etc for a total of 21, so on each postback I am running a total of 21 different connections, i have listed only 3 of them here for the general idea. I run this same code for update and for insert, so 21 times for each of them as well. In fact if someone is adding a customer, after they hit the new customer button, it first runs 21 inserts of blanks for each field, then runs 21 updates for anything they put in fields, on the same records. This is running too slow... any ideas on how I can combine these?? We have 21 different entries for EVERY customer. The Pf_property does not change, it is 21 different set entries, the only one that changes is the Pf_Value.
Try Dim queryString As String = "select Pf_Value from CustomerPOFlexField where [Pf_property] = 'Attrib1' and [Pf_CustomerNo] = @CustomerNo" Dim connection As New SqlClient.SqlConnection("connectionstring") Dim command As SqlClient.SqlCommand = New SqlClient.SqlCommand(queryString, connection) command.Parameters.AddWithValue("@CustomerNo", DropDownlist1.SelectedValue) Dim reader As SqlClient.SqlDataReader command.Connection.Open() reader = command.ExecuteReader reader.Read() TextBox2.Text = Convert.ToString(reader("Pf_Value")) command.Connection.Close() Catch ex As SystemException Response.Write(ex.ToString) End Try
Try Dim queryString As String = "select Pf_Value from CustomerPOFlexField where [Pf_property] = 'Attrib1Regex' and [Pf_CustomerNo] = @CustomerNo" Dim connection As New SqlClient.SqlConnection("connectionstring") Dim command As SqlClient.SqlCommand = New SqlClient.SqlCommand(queryString, connection) command.Parameters.AddWithValue("@CustomerNo", DropDownlist1.SelectedValue) Dim reader As SqlClient.SqlDataReader command.Connection.Open() reader = command.ExecuteReader reader.Read() TextBox5.Text = Convert.ToString(reader("Pf_Value")) command.Connection.Close() Catch ex As SystemException Response.Write(ex.ToString) End Try
Try Dim queryString As String = "select Pf_Value from CustomerPOFlexField where [Pf_property] = 'Attrib1ValMessage' and [Pf_CustomerNo] = @CustomerNo" Dim connection As New SqlClient.SqlConnection("connectionstring") Dim command As SqlClient.SqlCommand = New SqlClient.SqlCommand(queryString, connection) command.Parameters.AddWithValue("@CustomerNo", DropDownlist1.SelectedValue) Dim reader As SqlClient.SqlDataReader command.Connection.Open() reader = command.ExecuteReader reader.Read() TextBox6.Text = Convert.ToString(reader("Pf_Value")) command.Connection.Close() Catch ex As SystemException Response.Write(ex.ToString) End Try
Thanks,
Randy
what's the difference, if I use SQLDataReader at code level, making a query of that retrieves 500 rows and 2 columns, and making a query that retrieves 2 rows and 500 columns?
View 6 Replies View RelatedI have a table that has the following...
ID Status Type Check_Num Issued IssueTime Paid PaidTime
-----------------------------------------------------------------
1 I <null> 10 10.00 2/1/02
2 E IDA 10 <null> <null> 10.01 2/3/02
3 E CAP 10 <null> <null> 10.00 2/4/02
4 E PNI 11 <null> <null> 15.00 2/6/02
I want to return the Check_Num,Type, Paid, and Max(PaidTime) from this...
Example:
Check_Num Type Paid Time
---------------------------
10 CAP 10.00 2/4/02
11 PNI 15.00 2/6/02
Any assistance will be greatly appreciated.
Thanks,
Brian
Hey people
I'd be really grateful if someone can help me with this. Could someone explain the following:
If the following code is executed, it runs instantly:
declare @SellItemID numeric (8,0)
select @SellItemID = 5296979
SELECT distinct s.sell_itm_id
FROM stor_sell_itm s
WHERE (s.sell_itm_id = @SellItemID )
However, if I use this WHERE clause instead -
WHERE (@SellItemID = 0 OR s.sell_itm_id = @SellItemID)
- it takes 70 micro seconds. When I join a few more tables into the statement, the difference is 4 seconds!
This is an example of a technique I'm using in loads of places - I only want the statement to return all records if the filter is zero, otherwise the matching record only. I think that by using checking the value of the variable in the WHERE clause, a table scan is used instead of an index. This seems nonsensical since the variable is effectively a constant. Wrapping the entire select statement with an IF or CASE works, but when I've got 10 filters I'd have to 100 select statements.
I DON'T GET IT!! There must be a simple answer, HELP!!
Jo
PS this problem seems to occur both in 6.5 and 7.0
This query is giving me very slow search .What could be the efficient way
SELECT (
SELECT COUNT(applicationID) FROM Vw_rptBranchOffice
WHERE ( statusDate between '2008-03-13 16:12:11.513' AND '2008-05-30 00:00:00.000'
AND SearchString like '%del%')) AS
totalNO,ApplicationID,SearchString,StudentName,IntakeID,CounslrStatusDate
FROM Vw_rptBranchOffice
WHERE statusDate between '2008-03-13 16:12:11.513' AND '2008-05-30 00:00:00.000' AND
SearchString like '%del%'
Sumanesh writes "Recently I read one article “Converting Multiple Rows into a CSV string�
(http://www.sqlteam.com/item.asp?ItemID=256)
I have found one easy and more efficient way to achieve the same thing.
First I have a table called test with 2 columns (ID and Data)
And some data inserted into it.
CREATE FUNCTION [dbo].CombineData(@ID SMALLINT)
RETURNS VARCHAR(2000)
AS
BEGIN
DECLARE @Data VARCHAR(2000)
SET @Data = ''
SELECT @Data = @Data + Data + ',' FROM Test WHERE ID = @ID
RETURN LEFT(@Data,LEN(@Data)-1)
END
GO
Then used a simple select query to achieve the same
SELECT DISTINCT ID, [dbo].CombineData(ID) FROM Test
Which achieved the same thing without using any temporary tables and Cursors. I am sure that you will accept that this is more efficient than the one that has been published.
Thanks
Sumanesh"
Hi all,I am having issues of efficiency of backing up data from one SQL database to another.The two servers in questions are on different networks , behinddifferent firewalls. We have MS SQL 2000.On the source data i run a job with the following steps:1> take trans backup every 4 hrs2> ftp to the remote server3> if ftp fails , disable the whole jobOn the target server I run a job which does the following1> restore the trans backup with NORECOVERY.If the job fails at target. I will have to go through the whole processof doing a complete backup of the source , restoring it at the otherens and then starting trans-backup again.Also, if we do a failover to the target server, then when we roll backto the source server again we have to da a back-up of the target andrestore it on the source server.Is ther a more efficent way of doing this??
View 3 Replies View RelatedWhich is more efficient:Select * from table1 where id in (select id from table2)orSelect * from table1 where exists(select * from table2 wheretable2.id=table1.id)
View 8 Replies View Related