Can anybody tell me the perfomance difference for 2 sql statements below:
select count(*) from products where prodID between 20987 and 21003
go
declare @ProdID1 int
declare @prodID2 int
set @ProdID1 = 20987
set @prodID2 = 21003
select count(*) from products where prodID between @ProdID1 and @prodID2
First statement takes 1 second to execute and second statement takes more than one minute. I don't understand what is the problem with using variables.
Excuse me for the 'noobish' question but it seems in my mining models, i am 'loosing' input variables. I am using the Microsoft Decision Tree algorithm and eventhough i have set 4 variables as 'input' and all 4 of them are in my mining structure, the model is using only 3. That 4th variable is also missing from the dependency network graph. Can anyone help me solve this problem?
I want to convert a SQL query as shown below into a stored procedure:
select name from namelist where town in ('A','B','D')
If I want to make the town as the input variable into the stored procedure, how should I declare the stored procedure? As far as I know, stored procedure could only handle individual values, and not a range of values.
I have a SSIS package with a Sequence which Contains a Webservice Task, in the input section of this task i want to pass a User Variable as Parameter for my webmethod. but it doesn´t work, it allways sends the variable definition as string "@[User::Filename]". so i searched Microsoft Technet how to pass User Variables in Webservice Tasks and found this site: http://technet.microsoft.com/en-us/library/ms187617.aspx
which says :
" Variable
Select the check boxes to use variables to provide inputs. "
but there is no such checkbox on the input page of my Webservice Task... there is just the Value column which i can edit... but as mentioned before when i try to set the value to a variable it doesn work
i tried the following strings in the value column:
The variable 1 is created as int32 and variable 2 is created as dattime.
When i execute the SQLtask, I get error:
[Execute SQL Task] Error: Executing the query "Exec mysp 'table1',OUTPUT,OUTPUT" failed with the following error: "Error converting data type nvarchar to int.". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly.
What am i missing. I tried changing the data types adding the input variable also as a variable in the mapping. Nothing seems to work. Any ideas please?
HiThe scenario:The price of products are determined by size.I have a Prices table that contains 3 columnsWidth Length and Price.User inputs their own width and length values as inWidth and inLength.It is unlikely that these values will exactly match existing lengths and widths in the price table.I need to take these User Input values and round them up to the nearest values found in the Prices table to pull the correct price.What is the most efficient way of achieving this?Thanks for your time.C# novice!
was trying to performance tune a query and came up on this weird issue(Weird to me atleast.. possibly because I am a newbie:-))).
When I run the query mentioned below, I get the results in 1 second, while the same query, if I declare a variable for the value I am comparing, it takes 40 seconds. I am on SQL Server 2000. Both queries are being run in the same DB on the same tables and the only difference between the two is that the date has been declared as a variable. I am able to consistantly reproduce this. Tried casting the variable, declaring it as varchar , replacing the date by getdate() at both places, but the moment I use the variable, the performance goes for a toss. Has anyone came across any similar issues? TIA Callista
Query 1 select ae.Col1, ae.Col2, ae.Col3, ae.Col4, ge.Col4, c.Col5, 0 from table1 ae WITH (INDEX=ind_Col3 NOLOCK), table2 ge with (nolock), table3 c with (nolock) where ae.Col1 = ge.Col1 AND ae.Col4 = c.Col1 AND ae.Col3 > '2007-10-25 14:18:12.380' and ae.Col6 is not null
Query 2 declare @MyVariable datetimeselect @MyVariable = '2007-10-25 14:18:12.380' select ae.Col1, ae.Col2, ae.Col3, ae.Col4, ge.Col4, c.Col5, 0 from table1 ae WITH (INDEX=ind_Col3 NOLOCK), table2 ge with (nolock), table3 c with (nolock) where ae.Col1 = ge.Col1 AND ae.Col4 = c.Col1 AND ae.Col3 > @MyVariable and ae.Col6 is not null
We are processing 60,00, 000 rows(2 GB file) available in a flat file and loading them in to a database tables using OLEDB Destination components. In the data pipeline of an SSIS package we have 1 flat file source reader, 7 look up components(full cache mode), 1 multicast component and 2 OLE DB destinations with fast load option.
We have observed that first 10,00, 000 rows are processed and loaded in to target tables in just 4 minutes time. The second set of 10,00, 000 rows are processed in 15 minutes time. After this for processing each 1,00,000 rows SSIS is taking approximately 8 - 10 minutes time. We are not able to identify the reasons for the unexpected behaviour of SSIS.
We thought that as the input file size is 2 GB SSIS is not able to manage and slowing down over time of execution. We did split the big input file in to 60 small 37 MB (approx) size files. Then we modified the package by adding For-Each loop task to process all the 60 small files and load them in to database server sequentially. Even in this approach also we have identified data loading has slowed down drastically after processing 13 files.
In order to verify is there any problem with reading source file or transformation, we have replaced OLEDB destinations component with Flat File destinations. With Flat file destination the time taken for processing rows is very constant. For every 8 minutes package is able to process 10,00,000 rows and write them in to the destination files. So, there is no problem with the with either Look up components or flat file source reader.
We are sure that target database server is in same state/condition from the starting to the end of package execution. The client box in which we are running the package is having 1 GB RAM. During package execution time the CPU usage is at 30 % and PF usage is 580 MB. SP1 is also installed on both Client and Server.
Does any one have clue what is causing slow down of data load over the time of package execution?
My company is currently migrating from Interbase to SQL Server 2005. During the migration we have came across a rather peculiar issue and wondering if anyone can advise.
We have a table.. named "prospect" which holds client information
We have a stored procedure which hangs on the following statement.
DECLARE @surname char(25);
SET @surname='BLAH%';
SELECT * FROM Prospect WHERE c_surname LIKE @surname;
The above takes 28 seconds to run. The following statement returns a result inside a second.
SELECT * FROM Prospect WHERE c_surname LIKE 'BLAH%';
In Interbase, the original returned the answer within a second too. The schema in both database is the same.
The 1st statement does not use an index! The execution plan is different to the 2nd statement. I am aware I can create an index recommended by the Database Engine Tuning which solves the issue or specify the index to use in the original statement but why does the engine not use the correct index if there is a variable involved? I need to know as we have just started looking at the code.
1) is there any way to run a query over a query without having to create a table with the results of the first query? (would drop table work? If so, how?
2) how can i define input variables the same way i do in excel? I am trying to run a couple of simulations based on 2 core inputs (in excel i would just do a data table)
I am not comfortable with DTS 2000 but I need to execute a encapsulated DTS 2000 package from a SSIS package. The real problem is when I need to pass SSIS variables to DTS 2000 package. The DTS 2000 package have 3 global variables that I can identify on " Execute DTS 2000 Package Task Editor - Inner Variables ". I believe the SSIS variables must be mapped on " Execute DTS 2000 Package Task Editor - OuterVariables ". How can I associate the SSIS variables(OuterVariables ) to "Inner Variables"? How can I do it? Much Thanks.
Hello Everyone,I have a very complex performance issue with our production database.Here's the scenario. We have a production webserver server and adevelopment web server. Both are running SQL Server 2000.I encounted various performance issues with the production server with aparticular query. It would take approximately 22 seconds to return 100rows, thats about 0.22 seconds per row. Note: I ran the query in singleuser mode. So I tested the query on the Development server by taking abackup (.dmp) of the database and moving it onto the dev server. I ranthe same query and found that it ran in less than a second.I took a look at the query execution plan and I found that they we'rethe exact same in both cases.Then I took a look at the various index's, and again I found nodifferences in the table indices.If both databases are identical, I'm assumeing that the issue is relatedto some external hardware issue like: disk space, memory etc. Or couldit be OS software related issues, like service packs, SQL Serverconfiguations etc.Here's what I've done to rule out some obvious hardware issues on theprod server:1. Moved all extraneous files to a secondary harddrive to free up spaceon the primary harddrive. There is 55gb's of free space on the disk.2. Applied SQL Server SP4 service packs3. Defragmented the primary harddrive4. Applied all Windows Server 2003 updatesHere is the prod servers system specs:2x Intel Xeon 2.67GHZTotal Physical Memory 2GB, Available Physical Memory 815MBWindows Server 2003 SE /w SP1Here is the dev serers system specs:2x Intel Xeon 2.80GHz2GB DDR2-SDRAMWindows Server 2003 SE /w SP1I'm not sure what else to do, the query performance is an order ofmagnitude difference and I can't explain it. To me its is a hardware oroperating system related issue.Any Ideas would help me greatly!Thanks,Brian T*** Sent via Developersdex http://www.developersdex.com ***
Hello Everyone,I have a very complex performance issue with our production database.Here's the scenario. We have a production webserver server and adevelopment web server. Both are running SQL Server 2000.I encounted various performance issues with the production server witha particular query. It would take approximately 22 seconds to return100 rows, thats about 0.22 seconds per row. Note: I ran the query insingle user mode. So I tested the query on the Development server bytaking a backup (.dmp) of the database and moving it onto the devserver. I ran the same query and found that it ran in less than asecond.I took a look at the query execution plan and I found that they we'rethe exact same in both cases.Then I took a look at the various index's, and again I found nodifferences in the table indices.If both databases are identical, I'm assumeing that the issue isrelated to some external hardware issue like: disk space, memory etc.Or could it be OS software related issues, like service packs, SQLServer configuations etc.Here's what I've done to rule out some obvious hardware issues on theprod server:1. Moved all extraneous files to a secondary harddrive to free up spaceon the primary harddrive. There is 55gb's of free space on the disk.2. Applied SQL Server SP4 service packs3. Defragmented the primary harddrive4. Applied all Windows Server 2003 updatesHere is the prod servers system specs:2x Intel Xeon 2.67GHZTotal Physical Memory 2GB, Available Physical Memory 815MBWindows Server 2003 SE /w SP1Here is the dev serers system specs:2x Intel Xeon 2.80GHz2GB DDR2-SDRAMWindows Server 2003 SE /w SP1I'm not sure what else to do, the query performance is an order ofmagnitude difference and I can't explain it. To me its is a hardware oroperating systemrelated issue.Any Ideas would help me greatly!Thanks,Brian T
Table is created. I can SELECT * FROM accepted and see my column names.
Then I try to BCP into the table using:
C:>BCP sales..east in C:Resultsaccepted.txt -t -f C:cpformataccepted.fmt -Usa -Ppwd
I get this error:
Starting copy... SQLState = 22001, NativeError = 0 Error = [Microsoft][ODBC SQL Server Driver]String data, right truncation SQLState = 22001, NativeError = 0 Error = [Microsoft][ODBC SQL Server Driver]String data, right truncation
and so on......
In the .fmt file I've tried "", " ", " " and everthing I could think of as a delimiter. Still no luck. I've tried almost every switch available to both OSQL and BCP. The data I am trying to BCP is a SQL result so I don't think any special delimiters are placed. I've tried not using the .fmt file and using the prompts but still no luck. Data is CAST in the query and doesn't excede 45 characters. Hope I've explained my problem well enough.
Hi,I need to input Chinese character into the table of the database. I did try to install/run both Chinese/English version of Visual Studio into Chinese/English version of Server 2003 but it still didn't work.Please help !stephen
I have two textboxes on the page...shipdate and duedate. When the page loads, shipdate has today's date loaded and duedate has a date that's 28 days later than today. When I change the dates and submit it's not updating in the database instead I'm getting the two dates in pageload. What am I doing wrong?Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
ShipDateTxt.Text = Today() DueDateTxt.Text = DateAdd(DateInterval.Day, 28, Today()) End SubProtected Sub LoanRequest_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles LoanRequest.Click Dim conn As New Data.SqlClient.SqlConnection(ConfigurationManager.ConnectionStrings("TrainUserConnectionString").ConnectionString)Dim cmd As New Data.SqlClient.SqlCommandWith cmd .Connection = conn .CommandType = Data.CommandType.StoredProcedure .CommandText = "UpdateloanerInfo".Parameters.AddWithValue("@requestorid", Integer.Parse(Request.QueryString("requestorid"))) .Parameters.AddWithValue("@shipdate", ShipDateTxt.Text).Parameters.AddWithValue("@duedate", DueDateTxt.Text) End With Here's updateloanerinfo stored procedure: @requestorid int,@shipdate datetime,@duedate datetime AS update LibraryRequest set [shipdate] = @shipdate,[duedate] = @duedate Where requestorid=@requestorid
Here is what I am trying to do: Every month we need to import a fixed format text file into one of our tables. The format and location of the file is same every month except for the name. I want to create a DTS package to import it and call this DTS package first thing in a stored procedure(after which I do some processing with this imported data). I want to create the filename in my stored procedure and then call this DTS package to import it.
I am usig DTS as the interface is so much easier and want to avoid bcp :-)
I am just learning SQL Server and I am stuck with a few things. I was wondering if you can define input masks for columns in the database in SQL Server. I have used this feature many times in Access and on the front end in Oracle Forms. Is there such a thing in SQL Server?? Is it just called something different.....? I will be trying to format telephone numbers and dates. Thank you for you time.
(Select distinct t.itemnmbr,t.totalprice as totalcost
from ( select distinct
vs.itemnmbr, sum(vs.totalsumprce) as totalprice
from vwquantityprice vs
Where vs.itemnmbr = @itemnmbr and (vs.docdate between @startdate and @enddate)
group by vs.itemnmbr
) as t
)
select * from quantityprice('06-5840','4/1/2007','4/1/2008')
well, guys, i have this function and obviously i will get one row from this in output...with that particular itemnumber but i want multi-itemnmbrs some times in output...some times 2..soemtimes 3...
example, select * from quantityprice('06-5840,ab-4581,0a-1458,45-0945','4/1/2007','4/1/2008')
can you tell me what condition it will come to get this output..
like in where itemnmbr in('06-5840,ab-4581,0a-1458,45-0945') and in starting input v ariable @itemnmbr..
create function quantprice
( @itemnmbr varchar(50)..
don't know what condition it will come and where i have to put condition in where clause or in input variable..
any help would be appreciated..thanks a lot!! guys plz reply.
Hi there, I'll be going through a training couse for SQL Server next month. The class I'm signed up for is M2780: Maintaining a Microsoft® SQL Server™ 2005. My company uses SQL Server 2000 now and unless I give good reasons to upgrade to 2005, we won't be upgrading. I have very little DBA experience, but since I was told SQL Server is my responsibility, I figured it would make sense to go through some type of training for it. My questions are: Is there enough the same between the two that it makes sense for me to take this class? Are there good business reasons I can give for upgrading? If we don't upgrade is it worth taking a class for 2000 vs 2005?
I’m trying to pass inputs from one stored proc to another but I’m having problems in passing them.
First proc (input_passing) should pass the following inputs – FirstName, LastNmae and RecordID to the second proc (input_receive) – then the second proc will diplay the outcome – YES/NO if there is a match. ------------------------------------------------------------------------------------------ First proc (input_passing) ------------------------------------------------------------------------------------------------------- DECLARE @RecordIDVARCHAR(11), @FirstNameVARCHAR(60), @LastNameVARCHAR(60)
--DECLARE tbInputs CURSOR FOR SELECT RecordID, FirstName, LastName
FROM tbInputs
OPEN tbInputs
FETCH NEXT FROM tbInputs INTO @RecordID, @FirstName, @LastName
WHILE @@FETCH_STATUS = 0 BEGIN --GET RECORD SET @RecordID = RecordID from dbo.tbInputs)
END
FETCH NEXT FROM tbInputs INTO @RecordID, @FirstName, @LastName
END
CLOSE tbInputs DEALLOCATE tbInputs exec input_receive ----------------------------------------------------------------------------------------------------------------- Second proc. (input_receive)
-- ******* Initializations ********** SET @Count = 0 SET @Found = 0 -- DEFAULT to No File Match SET RecordMatch = 0 SET @MatchedOn = 'NO FOUND' -- ******* END Initializations **********
-- First check to see if the RecordID Matches IF( @RecordID IS NOT NULL AND @RecordID <> '' ) BEGIN IF( CAST( REPLACE(@RecordID, '-', '') AS DECIMAL(18,0)) > 0 ) BEGIN SELECT @Count = COUNT(*) FROM tbAlert WHERE REPLACE(RecordID, '-', '') = REPLACE(@RecordID, '-', '')
IF( @Count > 0 ) BEGIN SET @RecordMatch = 1 SET @MatchedOn = 'FOUND : RecordID' RETURN END END END
A script component receives some input. But I just can't get at the first row??
Basically, if i use the NextRow method in the in the Do statement, then it advances the row collection to the second row before it gets into the code inside the loop?? BUT, if I use the EndOfRowset property to define my loop then I get an error:
[PipelineBuffer has encountered an invalid row index value]
I'm guessing this means...I have to call NextRow before i access the data in the collection? But thats retarted because then I miss the first row?? what? What am I missing??
This is the code which works but I miss the first row:
Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer) Dim strConcept As String
Do While Row.NextRow()
strConcept = Row.concept
updateDb(strConcept)
Loop End Sub
This is the code which throws the invalid row index error:
Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer) Dim strConcept As String
Do While Not Row.EndOfRowSet()
strConcept = Row.concept
updateDb(strConcept)
Row.NextRow()
Loop End Sub
I've put some try catches in there an the error happens on the line which calls Row.concept....?
Can anyone help, it must be something I'm messing up
I need to validate my input rows. The row is valid if there exist some other input rows in the same table (I am importing data from excel and access). I'll give an example to make everything clear:
Input table boys has following columns:First_Name ,Surname and Date_of_birth.
Output table is Twin_Triple_More_Brothers. I would like to insert into this table only boys that surnames are equal and difference in date of birth is less then one day.
I was thinking about lookup component, but I cannot use it in that way (or I just do not know how).
Maybe someone has an idea how to do this? Thanks for help.
If a component requires a sorted input it would seem reasonable that you can check the IsSorted property of the attached input, but this will always return false. I have tried this when connecting the output of the Sort transform to my component, and then check the IsSorted property for this input. It is always false. How can this be, and also how can I see if the path is indeed sorted?
If using a virtual input column in my UI, I get a SortKeyPosition on the columns, but when overriding SetUSageType in the component class I always get zero for the key. Why is the sort information not quite there for me?
