What Algorithms Does SQL Server Use To Process Joins?
Mar 20, 2008
Can anybody answer this question ?
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Question On Attributes Selection For Un-supervised Algorithms And Supervised Algorithms
Jul 19, 2007Hi, all,
Thanks for your kind attention.
Just wonder is there any good idea for us to select attributes for training models? Both for non-supervised algorithms like Association Rules and Clustering etc. and supervised algorithms like decision tree etc.
It will be much interesting to hear from you for any best practices and popular methods of dealing with this issue.
I am looking forward to hearing from you and thanks for your advices.
With best regards,
Yours sincerely,
About Plug-in Algorithms In SQL Server 2005
May 22, 2006Hi, all here,
I am having a question about plug-in algorithms in SQL Server 2005. Since we are able to implement our own algorithms in SQL Server 2005 analysis services architecture, so my question is: what benefits can to a great extent be achieved? Like say, we are going to implement a plug-in algorithm, so what considerations should be concerned?
Thanks a lot in advance for any guidance and help.
Tutorial And Demos For All SQL Server 2005 Built-in Data Mining Algorithms
May 11, 2007Hi, all experts here,
Thank you for your kind attention.
Could please any of you give me some advices for if there are tutorials and demos avaiable which cover all the SQL Server 2005 data mining built-in algorithms?
That will be great to hear from any of you shortly. Thanks a lot in advance.
With best regards,
Yours sincerely,
EAN Algorithms
Aug 24, 2007Here is how you get the check digit for EAN-8, EAN-13 and EAN-14.CREATE FUNCTION dbo.fnGetEAN
(
@EAN VARCHAR(13)
)
RETURNS VARCHAR(14)
AS
BEGIN
DECLARE@Index TINYINT,
@Multiplier TINYINT,
@Sum TINYINT
SELECT@Index = LEN(@EAN),
@Multiplier = 3,
@Sum = 0
WHILE @Index > 0
SELECT@Sum = @Sum + @Multiplier * CAST(SUBSTRING(@EAN, @Index, 1) AS TINYINT),
@Multiplier = 4 - @Multiplier,
@Index = @Index - 1
RETURNCASE @Sum % 10
WHEN 0 THEN @EAN + '0'
ELSE @EAN + CAST(10 - @Sum % 10 AS CHAR(1))
END
END
E 12°55'05.25"
N 56°04'39.16"
ISBN Algorithms
Aug 24, 2007Here is how you get the check digit for ISBN.CREATE FUNCTION dbo.fnGetISBN
(
@ISBN VARCHAR(11)
)
RETURNS VARCHAR(13)
AS
BEGIN
DECLARE@Index TINYINT,
@Weight TINYINT,
@Sum SMALLINT
SELECT@Index = LEN(@ISBN),
@Weight = 2,
@Sum = 0
WHILE @Index > 0
BEGIN
IF SUBSTRING(@ISBN, @Index, 1) <> '-'
SELECT@Sum = @Sum + @Weight * CAST(SUBSTRING(@ISBN, @Index, 1) AS TINYINT),
@Weight = @Weight + 1
SET @Index = @Index - 1
END
RETURNCASE @Sum % 11
WHEN 1 THEN @ISBN + '-X'
ELSE @ISBN + '-' + CONVERT(CHAR(1), 11 - (@Sum % 11))
END
END
E 12°55'05.25"
N 56°04'39.16"
About Data Algorithms
Feb 5, 2007I just want to know what are the data algorithms available for sql server 2005 and can i use data mining as a web service
Performance Of Encryption Algorithms
Aug 2, 2006I am in the stage of design for an application that uses SQL server 2005. We intended to encrypt some sensitve data using the encryption features in SQL server 2005. we will use symmetric key encryption. The question here is which symmetric encryption algorithm has the best performance? how much does the key size affect the perfromance? the data to be encrypted will be some lines of text equal to a word document.
any ideas?
Dynamic And Static On Algorithms
Feb 14, 2008
Hi All,
We're currently preparing for a project for a bank client of ours where we would be using SQL Server 2008's data mining capabilities.
In the context of the out-of-the-box algorithms of SQL08 does the algorithms Logistics, Clustering and Logistic Regression includes Dynamic Logistics, Dynamic Clustering and Dynamic Logistic Regression?
Regards,
Joseph
Simple Explanation Of Mining Algorithms
Jun 9, 2007Hello Everyone,
I am reading DataMining Tutorial and right now I am at the Mining Algorithms section. I cannot understand any of the algorithms. For example take the following text... what a bunch of mouthful bla bla bla it is ....
"The Microsoft Decision Trees algorithm supports both classification and regression and it works well for predictive modeling. Using the algorithm, you can predict both discrete and continuous attributes.
In building a model, the algorithm examines how each input attribute in the dataset affects the result of the predicted attribute, and then it uses the input attributes with the strongest relationship to create a series of splits, called nodes. As new nodes are added to the model, a tree structure begins to form. The top node of the tree describes the breakdown of the predicted attribute over the overall population. Each additional node is created based on the distribution of states of the predicted attribute as compared to the input attributes. If an input attribute is seen to cause the predicted attribute to favor one state over another, a new node is added to the model. The model continues to grow until none of the remaining attributes create a split that provides an improved prediction over the existing node. The model seeks to find a combination of attributes and their states that creates a disproportionate distribution of states in the predicted attribute, therefore allowing you to predict the outcome of the predicted attribute"
In the above text what is meant by discrete and continious attributes? what is regression? what is predicted attributes? what are input attributes? what is distribution of states?
Is there a source which explains these algorighms in a easier way ....
How To Write Prediction Query For Two Algorithms?
Dec 14, 2006hi,
Is it possible to use two algorithms together?I need to write prediction Query so that its should both models having clustereing algorithm and timeseries algorithm.
for example
I am having student information.I ve to predict performance of students for certain period.The students should be classified by their types like rich kids,poorkids..like that.I need to predict the performance of the rich kids??
can anyone help?
Encryption Algorithms Used In SQL Compact Edition 3.5
Apr 3, 2008Hi,
In the info for SQL Compact Edition 3.5 it states that one of the features is:
Support for newer and more secure encryption algorithms.
I can't seem to find details of exactly what these new, more secure algorithms are. It appears 3.1 used 128-bit RSA. Is this the same in 3.5, or has this changed?
Thanks
What Are The Algorithms Used In The Different Feature Buttons In The DM Add-IN For Excel?
Jun 19, 2007 I was just wondering on what algorithms was used in the different feature buttons in the Excel Add-In? For example, forecast, what algorithm was used in order for it to create the forcasting?
More Questions About Data Mining Plug-in Algorithms?
Jun 6, 2006Hi, all here,
I am having a more considertaion about Data Mining plug-in algorithms. When we say we are going to embed a uesr plug-in algorithm, so what is the context for that ? I mean in which case then we thing we need to embed a user plug-in algortihm? I know when we say we are going to embed a user costomermized plug-in algorithm, it means we want something more costomized. But what kind of customized features are generally concerned? Is it independant for different market sectors?
I dont think we can just try to embed a plug-in algorithm then compete it with avaialble algorithms to see which one is with better prediction accuracy?
Would please someone here give me some guidances about that?
Joins On Views That Are Formed With Outer Joins
Nov 3, 2000We find that a delete command on a table where the rows to be deleted involve an inner join between the table and a view formed with an outer join sometimes works, sometimes gives error 625.
If the delete is recoded to use the join key word instead of the = sign
then it alway gives error 4425.
625 21 0 Could not retrieve row from logical page %S_PGID by RID because the entry in the offset table (%d) for that RID (%d) is less than or equal to 0. 1033
4425 16 0 Cannot specify outer join operators in a query containing joined tables. View '%.*ls' contains outer join operators.
The delete with a correleted sub query instead of a join works.
Error 4425 text would imply that joins with view formed by outer joins should be avoided.
Any ideas on the principles involved here.
SQL 2000 - Unable To Get List Of Data Mining Algorithms - PLEASE HELP
Nov 6, 2006Hi,
I recently started using SQL 2000 Analysis Manager. I wanted to try data mining but was unable to get the Mining Model Wizard to load available techniques.
When I select a cube and "New Mining Model" I get the following error:
"Unable to get list of data mining algorithms."
"Object of provider is not capable of performing requested operation"
Please help.
Thank you very much,
Robert
A Connection Was Successfully Established With The Server, But Then An Error Occurred During The Login Process. (provider: Shared Memory Provider, Error: 0 - No Process Is On The Other End Of The Pipe.)
Apr 7, 2008i'm going nuts with SQL server notification thing. I have gone throigh this artical which tells how to set user http://www.codeproject.com/KB/database/SqlDependencyPermissions.aspx. This article show how to create new user and setup for sql server notification.But In my case user was alredy existing in database. which is very common senario in most cases. So i did following( check the SQL script below) but then i get this error
"A connection was successfully established with the server, but then an error occurred during the login process. (provider: Shared Memory Provider, error: 0 - No process is on the other end of the pipe.)"
this my sql script
use [master]Go
-- Ensuring that Service Broker is enabled ALTER DATABASE [DatabaseName] SET ENABLE_BROKERGO
-- Switching to our databaseuse [DatabaseName]GO
CREATE SCHEMA schemaname AUTHORIZATION usernameGO
ALTER USER username WITH DEFAULT_SCHEMA = schemaname GO
/* * Creating two new roles. We're not going to set the necessary permissions * on the user-accounts, but we're going to set them on these two new roles. * At the end of this script, we're simply going to make our two users * members of these roles. */EXEC sp_addrole 'sql_dependency_subscriber' EXEC sp_addrole 'sql_dependency_starter'
-- Permissions needed for [sql_dependency_starter]GRANT CREATE PROCEDURE to [sql_dependency_starter] GRANT CREATE QUEUE to [sql_dependency_starter]GRANT CREATE SERVICE to [sql_dependency_starter]GRANT REFERENCES on CONTRACT::[http://schemas.microsoft.com/SQL/Notifications/PostQueryNotification] to [sql_dependency_starter] GRANT VIEW DEFINITION TO [sql_dependency_starter]
-- Permissions needed for [sql_dependency_subscriber] GRANT SELECT to [sql_dependency_subscriber] GRANT SUBSCRIBE QUERY NOTIFICATIONS TO [sql_dependency_subscriber] GRANT RECEIVE ON QueryNotificationErrorsQueue TO [sql_dependency_subscriber] GRANT REFERENCES on CONTRACT::[http://schemas.microsoft.com/SQL/Notifications/PostQueryNotification] to [sql_dependency_subscriber]
-- Making sure that my users are member of the correct role.EXEC sp_addrolemember 'sql_dependency_starter', 'username'EXEC sp_addrolemember 'sql_dependency_subscriber', 'username'
JOINS To Sub-Queries -vs- JOINS To Tables
Aug 11, 2005SQL Server 2000Howdy All.Is it going to be faster to join several tables together and thenselect what I need from the set or is it more efficient to select onlythose columns I need in each of the tables and then join them together?The joins are all Integer primary keys and the tables are all about thesame.I need the fastest most efficient method to extract the data as thisquery is one of the most used in the system.Thanks,Craig
View 3 Replies View RelatedTransaction (Process ID 135) Was Deadlocked On Lock Resources With Another Process And Has Been Chosen As The Deadlock Victim.
Nov 14, 2007
Hi,
I was trying to extract data from the source server using OLEDB Source and SQL Server Destination when i encountered this error:
"Transaction (Process ID 135) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.".
What must be done so that even if the table being queried is locked, i wouldn't experience any deadlock?
cherriesh
FCB::Open: Operating System Error 32(The Process Cannot Access The File Because It Is Being Used By Another Process.) Occurred W
Dec 3, 2007Hello all,
I am running into an interesting scenario on my desktop. I'm running developer edition on Windows XP Professional (9.00.3042.00 SP2 Developer Edition). OS is autopatched via corporate policy and I saw some patches go in last week. This machine is also a hand-me-down so I don't have a clean install of the databases on the machine but I am local admin.
So, starting last week after a forced remote reboot (also a policy) I noticed a few of the databases didn't start back up. I chalked it up to the hard shutdown and went along my merry way. Friday however I know I shut my machine down nicely and this morning when I booted up, I was in the same state I was last Wenesday. 7 of the 18 databases on my machine came up with
FCB:pen: Operating system error 32(The process cannot access the file because it is being used by another process.) occurred while creating or opening file 'C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDataTest.mdf'. Diagnose and correct the operating system error, and retry the operation.
and it also logs
FCB:pen failed: Could not open file C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDataTest.mdf for file number 1. OS error: 32(The process cannot access the file because it is being used by another process.).
I've caught references to the auto close feature being a possible culprit, no dice as the databases in question are set to False. Recovery mode varies on the databases from Simple to Full. If I cycle the SQL Server service, whatever transient issue it was having with those files is gone.
As much as I'd love to disable the virus scanner, network security would not be amused. The data and log files appear to have the same permissions as unaffected database files. Nothing's set to read only or archive as I've caught on other forums as possible gremlins. I have sufficient disk space and the databases are set for unrestricted growth.
Any thoughts on what I could look at? If it was everything coming up in RECOVERY_PENDING it's make more sense to me than a hit or miss type of thing I'm experiencing now.
[Execute Process Task] Error:The Process Exit Code Was -1 While The Expected Was 0.
Mar 11, 2008Dear list
Im designing a package that uses Microsofts preplog.exe to prepare web log files to be imported into SQL Server
What Im trying to do is convert this cmd that works into an execute process task
D:SSIS ProcessPrepweblogProcessLoad>preplog ex.log > out.log
the above dos cmd works 100%
However when I use the Execute Process Task I get this error
[Execute Process Task] Error: In Executing "D:SSIS ProcessPrepweblogProcessLoadpreplog.exe" "" at "D:SSIS ProcessPrepweblogProcessLoad", The process exit code was "-1" while the expected was "0".
There are two package varaibles
User::gsPreplogInput = ex.log
User::gsPreplogOutput = out.log
Here are the task properties
RequireFullFileName = True
Executable = D:SSIS ProcessPrepweblogProcessLoadpreplog.exe
Arguments =
WorkingDirectory = D:SSIS ProcessPrepweblogProcessLoad
StandardInputVariable = User::gsPreplogInput
StandardOutputVariable = User::gsPreplogOutput
StandardErrorVariable =
FailTaskIfReturnCodeIsNotSuccessValue = True
SuccessValue = 0
TimeOut = 0
thanks in advance
Dave
Execute Process Task Error - The Process Exit Code Was 1 While The Expected Was 0.
Jan 30, 2007How do I use the execute process task? I am trying to unzip the file using the freeware PZUnzip.exe and I tried to place the entire command in a batch file and specified the working directory as the location of the batch file, but the task fails with the error:
SSIS package "IngramWeeklyPOS.dtsx" starting.
Error: 0xC0029151 at Unzip download file, Execute Process Task: In Executing "C:ETLPOSDataIngramWeeklyUnzip.bat" "" at "C:ETLPOSDataIngramWeekly", The process exit code was "1" while the expected was "0".
Task failed: Unzip download file
SSIS package "IngramWeeklyPOS.dtsx" finished: Success.
Then I tried to specify the exe directly in the Executable property and the agruments as the location of the zip file and the directory to unzip the files in, but this time it fails with the following message:
SSIS package "IngramWeeklyPOS.dtsx" starting.
Error: 0xC002F304 at Unzip download file, Execute Process Task: An error occurred with the following error message: "%1 is not a valid Win32 application".
Task failed: Unzip download file
SSIS package "IngramWeeklyPOS.dtsx" finished: Success.
The command in the batch file when run from the command line works perfectly and unzips the file, so there is absolutely no problem with the command, I believe it is just the set up of the variables on the execute process task editor under Process. Any input on resolving this will be much appreciated.
Thanks,
Monisha
Execute Process Task - Error :The Process Exit Code Was 2 While The Expected Was 0.
Mar 20, 2008
I am designing a utility which will keep two similar databases in sync. In other words, copying the new data from db1 to db2 and updating the old data from db1 to db2.
For this I am making use of the 'Tablediff' utility which when provided with server name, database, table info will generate .sql file which can be used to keep the target table in sync with the source table.
I am using the Execute Process Task and the process parameters I am providing are:
WorkingDirectory : C:Program Files (x86)Microsoft SQL Server90COM
Executable : C:SQL_bat_FilesSQL5TC_CTIcustomer.bat
The customer.bat file will have the following code:
tablediff -sourceserver "LV-SQL5" -sourcedatabase "TC_CTI" -sourcetable "CUSTOMER_1" -destinationserver "LV-SQL2" -destinationdatabase "TC_CTI" -destinationtable "CUSTOMER" -f "c:SQL_bat_Filessql5TC_CTIsql_filescustomer1"
the .sql file will be generated at: C:SQL_bat_Filessql5TC_CTIsql_filescustomer1.
The Problem:
The Execute Process Task is working fine, ie., the tables are being compared correctly and the .SQL file is being generated as desired. But the task as such is reporting faliure with the following error :
[Execute Process Task] Error: In Executing "C:SQL_bat_FilesSQL5TC_CTIpackage_occurrence.bat" "" at "C:Program Files (x86)Microsoft SQL Server90COM", The process exit code was "2" while the expected was "0". ]
Some of you may suggest to just set the ForceExecutionResult = Success (infact this is what I am doing now just to get the program working), but, this is not what I desire.
Can anyone help ?
Integration Services :: Dataload Process - Error Capturing Process
Aug 20, 2014I'm pulling data from Oracle db and load into MS-SQL 2008.For my data type checks during the data load process, what are options to ensure that the data being processed wouldn't fail. such that I can verify first in-hand with the target type of data and then if its valid format load it into destination table else mark it with error flag and push into errors table... All this at the row level.One way I can think of is to load into a staging table then get the source & destination table -column data types, compare them and proceed.
should I just try loading the data directly and if it fails try trouble shooting(which could be a difficult task as I wouldn't know what caused error...)
Transaction (Process ID 66) Was Deadlocked On Lock Resources With Another Process.
Feb 14, 2007Hi Folks,
I am having this table locking issue that I need to start paying attention to as its getting more frequent.
The problem is that the data in the tables is live finance data that needs to be changed and viewed almost real time so what I have picked up so far is that using 'table Hints' may not be a good idea.
I have a guy at work telling me that introducing a data access layer is the only way to solve this, I am not convinced but havnt enough knowledge to back my own feeling up. (asp system not .net).
Thanks in advance
Transaction (Process ID 65) Was Deadlocked On Lock Resources With Another Process
Jan 6, 2012We are facing deadlock issue in our web application. The below message is coming:
> Session ID: pwdagc55bdps0q45q0j4ux55
> Location: xxx.xxx.xxx.xxx
> Error in: http://xxx.xxx.xxx.xxx:xxxx/Manhatta...Bar=&Mode=Edit
> Notes:
> Parameters:
> __EVENTTARGET:
> __EVENTARGUMENT:
[code].....
Joins In Sql Server
Jun 14, 2005I have a very silly question.Does anyone know What is result of Inner Join ( left Join, Outer Join)
I tried to search but did not find any results for this.I would really appreciate if someone helps me out.
Thanks,
Siri
ASPNETDB.MDF: The Process Cannot Access The File Because It Is Being Used By Another Process
Feb 17, 2007Hi,
I'm trying to upload the ASPNETDB.MDF file to a hosting server via FTP, and everytime when it was uploaded half way(40% or 50%)
I would get an error message saying:
"550 ASPNETDB.MDF: The process cannot access the file because it is being used by another process"
and then the upload failed.
I'm using SQL Express. Does anybody know what's the cause?
Thanks a lot
Cannot Process Request Because The Process (3880) Has Exited.
Nov 15, 2007
Hi. When I try to start a package manually clicking the Start Debugging button I get this after a little while:
Cannot process request because the process (3880) has exited. (Microsoft.DataTransformationServices.VsIntegration)
How can I prevent this from happening? This happens every time I want to start the package and
every time the process id is different. Here it is 3880.
Darek
Outer Joins In SQL Server
Aug 6, 2002Hi,
I need to change some SQL statements in Oracle to to SQL Server syntax.
For example, the following is a query in Oracle SQL syntax.
================================================== ===========================
SELECT
COUNT(*)
FROM TABLE1 T1,
TABLE2 T2,
TABLE3 T3,
TABLE4 T4,
TABLE5 T5
WHERE
(
T1.NO(+)=T3.NO
AND T3.NO=T2.NO(+)
AND T4.NO(+)=T3.NO
AND T3.NO=T5.NO(+)
)
AND
(
T1.CODE(+)='VALUE1'
AND T2.CODE(+)='VALUE2'
AND T4.CODE(+)='VALUE3'
AND T5.CODE(+)='VALUE4'
)
================================================== =========================
Can you anyone please tell me the SQL Server equivalent? I am having doubts in the outerjoin part.
Thanks in advance
Regards
R
Multiple Joins In SQL Server
Jan 4, 2008Hi I have a requirement where in i haev to convert the SQL from Oracleto the one which will run on the SQL server.in the Oracle Query i am doing multiple joins, between some 13 tables.and some of these joins are inner joins and some are Left outer joins.table1 inner joined with table 2table2 inner join with table3table2 inner join with table4table2 left join with table5table5 left jin with table6table6 left jin with table7table7 left jin with table8table8 left jin with table9Any idea how to achieve this??Tianaren
View 2 Replies View RelatedSQL Server 2005 - Help With Outer Joins
Mar 26, 2007Hello,
I'm currently trying to rewrite some existing non-ANSI joins and have come across one that I'm not sure how to handle.
Here is a sample of the existing code:
SELECT receipts_payment_method.transaction_number,
receipts_detail.terms_amt,
receipts_detail.allowed_amt,
isNull(receipts_payment_method.check_number,'n/a') check_number,
isNull(receipts_payment_method.credit_card_type,'n/a') credit_card_type,
isNull(paymnt_method.payment_desc,'n/a') payment_desc,
isNull(cc_type.credit_card_desc,'n/a') credit_card_desc
FROM receipts,
receipts_detail,
receipts_payment_method,
paymnt_method,
cc_type
WHERE (receipts_payment_method.payment_id *= paymnt_method.payment_id) and (cc_type.credit_card_id =* receipts_payment_method.credit_card_type) and (receipts_payment_method.transaction_number = receipts.transaction_number);
I'm not sure how to rewrite the two joins since there are 3 tables involved (receipts_payment_method, paymnt_method, and cc_type) along with an "and".
Any help would be appreciated! Thanks in advance!
Ansi Joins Vs. SQL Joins
Oct 12, 1999Hi,
Why is it that SQL joins (*=) run a little faster as opposed to ANSI joins(LEFT JOIN...)? Aren't they supposed to be almost identical?
The issue is this: we are promoting using ANSI syntax for the obvious reason (future versions of SQL Server may not support SQL Server syntax; portability, etc.)
However, the problem is the speed. What have others done about this? Do you use ANSI syntax or SQL syntax? HOw true is it that future SQL Server versions may discontinue support for the '*=" and "=*' join operators.
Angel