Typical Data Load Question
Sep 30, 2006
I need to import typically 5000 - 50000 rows of data to OLTP database from a flat file. Flat file contains all active information - new & existing rows. About 10% of the rows are new. Each row has about 30 columns.
I have created a Data Flow which divides the data to new records (for insert) and existing records(for update) via the Lookup transformation (as described in Jaime Thompson blog - thanks).
The question is - in performance perspective - should I check if the existing records have been changed or not?
Currently I do a full refresh of all data - (my opinion is that in SQL side - if you update a row with exact same data - it will not cause SQL server to "perform row update") - however I'm concerned that SSIS performing between 4000 - 40000 update statements each time in OLE DB command may cause issues.
Your thoughts on this appreciated
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Dec 14, 2007
Hi,
Here I will describe my problem.
1. We are loading large amount of data from database on background thread which is starting on Application_start event in global.aspx.cs file.The data is later cached for subsquent request to improve the performance.
2. Now when we put the application on web farm garden, it is not able to load the application.
3. We are sending the request the servers through Router kind of application.
4 This application is working fine on single server enviornment.
Please help us.
Ajay Kumar Dwivedi
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Apr 27, 2007
I just have done the SSIS example in the tutorial document included when install SQL 2005 ENT. I have a problem that whenever I test to run, the service load all data from source with out noticing about the data (I mean it load all the data to the destination), I do it several time and it continue to load all without checking. That mean the data is dublicated when the schedule run???
I think there should be a paramete or something like that to help the engine just load the new data to the destination. Could you help please?
Thank
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Apr 25, 2004
hi, all
i am having what is considered to be typical error, i have two tables in sql2000 database
(options) orderid, productid, productname,optionvalue
(orderitems) orderid, quantity, unitprice,productcode,productid
I'd like to join these 2 tables and be able to display in a repeater. the problem is that i keep getting some duplicates with sql statement
"SELECT DISTINCT
options.orderid,options.productname,options.optionvalue,orderitems.quantity,orderitems.productcode
FROM options INNER JOIN on orderitems on
options.[orderid] = orderitems.[orderid] "
PLEEEASE HELP ME SLEEP AT NIGHT:)
thanks
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Jul 23, 2005
I tried to implement triggers for filling audit-trail table on this way.Everything works fine as long as I don't update the primary key field value.When I try to update PK value, an error occures.The code is the following:CREATE TRIGGER NameOfTheTriggerON dbo.TableName FOR DELETE, INSERT, UPDATEAS BEGINdeclare@type varchar(10) ,@UpdateDate datetime ,@UserName varchar(128)if exists (select * from inserted) and exists (select * from deleted)select @type = 'UPDATE'else if exists (select * from inserted)select @type = 'INSERT'elseselect @type = 'DELETE'select @UpdateDate = getdate() ,@UserName = system_user/* this code is repeting for every field in the table*/if update (TableName) or @type = 'DELETE'insert dbo.AUDIT_TRAIL (TableName, FieldName, OldValue, NewValue,UpdateDate, UserName, type)select 'TableName', convert(varchar(20), 'FieldName'),convert(varchar(1000),d.FieldName), convert(varchar(1000),i.FieldName),@UpdateDate, @UserName, @typefrom inserted ifull outer join deleted don i.PrimaryKeyFieldName = d.PrimaryKeyFieldNamewhere (i.FieldName<> d.FieldName or (i.FieldName is null and d.FieldName isnot null) or (i.FieldName is not null and d.FieldName is null))ENDHow to slve the problem with updated (changed) primary key values?What is the typical code for audit-trail triggers?Thanks.
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Aug 22, 2007
In a large organization who would typically be tasked with support ing SSIS - the database team, an application team, etc... SSIS is new to our Organization, we are attempting to put it into the correct organization. We current have SSRS that is supported by an application team, the SS DB is supported by the DB team.
Thanks
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Jul 31, 2007
I have been working on a project to evaluate transactional replication in SQL Server 2005 to find out if it will be suitable to provide real time reporting without impacting the primary database server. Thus far I have not seen latency better than several seconds replicating a change to a table or by utilizing the "tracer tokens" troubleshooting functionality. It usually takes a couple seconds from the publisher to the distributor and a couple more from the distributor to the subscriber.
I guess my question is actually whether it is possible to achieve sub-second (milliseconds) latency for transactional replication under any circumstances. Someone on another forum told me it was not, so I thought I would ask a separate community to confirm. Regarding the hardware, the latency on ping is less than 1ms between the servers and the servers themselves are decently powered quad processor boxes w/ 4GB of ram each. It seems to have the same latency of 3-5 seconds regardless of whether I publish a single table or all of the tables in the database. I currently have it configured with the publisher on one server and the distributor/subscriber on the second with the log reader and distributor agents set to run continuously. If it is possible, please recommend configuration of the agents or the topology of the PDS to achieve this. Thanks in advance for any insight you provide.
Dan
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Aug 8, 2006
I'm not sure which forum to post this problem in, since it almost seems like a network issue with our SQL Server. We have SQL Server 2000 SP4 (8.00.2039) installed on our enterprise database server. I've been using ADO (through VB, VBA, VBScript, C++) to connect to it without any problems. INSERT's, UPDATE's, SELECT's, no problems whatsoever... EXCEPT: After performing a number of repetative statements, my ADO connection object will error with the dreaded "SQL Server does not exist or access denied" message.
By repetative statements, I mean something like this:
cn.Open "..."
Set rs = cn.Execute(...)
Do Until rs.EOF
cn.Execute "Insert into ..."
rs.MoveNext
Loop
I may be doing 1,000 inserts within the loop, sometimes more. Without fail, though, my program will error after a certain number. I display a progress indicator showing which record (i.e., "10 of 1,000") I'm currently processing and it seems to error at the same number everytime. For example, it may get to record 564 before displaying the error. If I end the program and run it again, it gets to about the same spot (often it's EXACTLY the same spot) and errors again. So, it's almost like a timeout condition.
I know why the error occurs -- my machine can no longer "see" the SQL server. I have tried pinging the server after I get this message and it's unreachable. If I wait five minutes, though, pinging works and my program continues to run. I have coded around it (if error, wait, and try again) but it's very annoying.
Does this sound like a problem with our SQL Server, Network, ADO, my workstation, or a combination of sorts?
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May 28, 2015
how I can load the CSV file data into the sql server table. I know there are ways like bulk insert and other to load the csv file data into the table. But in my case the table doesn't exist and has to be created at the run time. With simple insert in temp table we do like select * into #temp from tablename and that creates the temp table. So. I need something like that which create the temp table and load the data into it. because the CSV file would have different number of columns and names so I can not create the table structure in advance. I have to create the table at run time.
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Apr 16, 2014
I have an source file and i have to load it into the data base by changing datatype of the columns in ssis
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Sep 7, 2007
Nothing difficult, I just need a way to generate a new datetime column based on the column [PostedDate], datetime. So basically I want to truncate the time. Thanks a lot.
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Jun 20, 2001
Hi!
We make complete data load once a week. Now we need to make additional steps to append data on daily basis. We have primary key on the table and it doesn't allow appending duplicate rows.
What steps should we create to append data?
Thank you,
Elena.
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Oct 23, 1999
Hi everobody!
When I run :
LOAD DATABASE db1
FROM DISK = 'c:mssqldatadb1_backup.dat'
go
I got error message:
Msg 3201, Level 16, State 1
Can't open dump device 'c:mssqldatadb1_backup.dat', device error or device off line. Please consult the SQL Server error log for more details.
How can I fix the problem?
Thank you.
Alona
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Nov 13, 2005
I'm needing to load data on the client side to load into a DataGrid. I decided to use excel to load the data, but it doesn't need to be. My problem is that it only loads from the server not the client. I browse to find the file and get the path with a control named ctlFindFile. A button labeled ctlLoadData will when pressed display the pathway in label1 and also place the pathway in the function GetDataFromExcel which returns a dataset from the spreadsheet and displays the data in a dataset. Data is returned fine if I’m on the server, but when I'm on a remote machine I receive an error. That is unless I've place a spreadsheet with the same name and pathway on the server as on the client machine, then I’m able to load the file. Now how do I get it to load from on the client machine?
Code below:
Private Sub ctlLoadData_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ctlLoadData.Click
Label1.Text = ctlFindFile.Value
DataGrid1.DataSource = GetDataFromExcel(ctlFindFile.Value, "SampleNamedRange").Tables(0)
DataGrid1.DataBind()
End Sub
Public Function GetDataFromExcel(ByVal FileName As String, ByVal RangeName As String) As System.Data.DataSet
'Returns a DataSet containing information from a named range in the passed Excel worksheet
Try
Dim strConn As String = "Provider=Microsoft.Jet.OLEDB.4.0;" &_ Data Source=" & FileName & ";Extended Properties=Excel 8.0;"
Dim objConn As New System.Data.OleDb.OleDbConnection(strConn)
objConn.Open()
' Create objects ready to grab data
Dim objCmd As New System.Data.OleDb.OleDbCommand("SELECT * FROM " &_ RangeName, objConn)
Dim objDA As New System.Data.OleDb.OleDbDataAdapter
objDA.SelectCommand = objCmd
' Fill DataSet
Dim objDS As New System.Data.DataSet
objDA.Fill(objDS)
' Cleanup and return DataSet
objConn.Close()
Return objDS
Catch ex As Exception
' Possible errors include Excel file already open and locked, et al.
Return Nothing
End Try
End Function
Error on Client:Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.Source Error:
Line 31: Private Sub ctlLoadData_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ctlLoadData.Click
Line 32: Label1.Text = ctlFindFile.Value
Line 33: DataGrid1.DataSource = GetDataFromExcel(ctlFindFile.Value, "SampleNamedRange").Tables(0)
Line 34: DataGrid1.DataBind()
Line 35: End SubSource File: C:InetpubwwwrootSAI_LoadWebForm1.aspx.vb Line: 33 Stack Trace:
[NullReferenceException: Object reference not set to an instance of an object.]
SAI_Load.WebForm1.ctlLoadData_Click(Object sender, EventArgs e) in C:InetpubwwwrootSAI_LoadWebForm1.aspx.vb:33
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +108
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +57
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +18
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
System.Web.UI.Page.ProcessRequestMain() +1292
Version Information: Microsoft .NET Framework Version:1.1.4322.2032; ASP.NET Version:1.1.4322.2032
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Dec 14, 2007
Hi foks!
In MYSQL I can insert a whole text/excel/csv file with the Load Data command. Can I do such a thing for MSSQL?
Thank you!
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Jan 16, 2007
I have a user that is loading data via an Access load procedure to a table that actually is a SQL Server 2005 table but is linked to the Access database. He is saying the load is extremly slow. How can I monitor what it is doing on the SQL Server side?
Thanks!
duckman2007
Have a great day!
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Dec 14, 2007
Hi foks!
In MYSQL I can insert a whole text/excel/csv file with the Load Data command. Can I do such a thing for MSSQL?
Thank you!
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Sep 21, 2005
Hi,I'm extracting data from a mainframe application with a view to loadingit into a MS SQL database. I'm trying to determine the most efficientway to format the mainframe extract file to make loading into thedatabase easier.The problem I have is that the existing record structure includes anarray that can vary between 1 to 50. If I include this array in asingle record the table I use to import the data would need 50 columnsthough not all these would be populated. There is a field in the recordto identify how many occurances of the array there are.Current Record Structure :Account NumberAccount NameOther Account DetailsTotalNumberOfArrayFieldsPopulatedArray :Value1Value2Value3....up to Value50 (if required)i.e.12344,Mr Agent,$29.95,2,BX123,BX12412345,Mr Jones,$14.95,3,XX123,XX124,XX12512345,Mr Jones,$14.00,1,XY12312345,Mr Jones,$15.95,2,XZ124,XZ12512346,Mr Smith,$19.95,3,AX123,AX124,AX12512346,Mr Smith,$19.00,1,BY12312347,Mr Acant,$99.95,7,CX123,CX124,CX125,CX126,CX127,CX128 ,CX129There may be up to 3 records created for each Account Number withdifferent values in the array fields.Am I better to break this file into two files .. one with the corecustomer information and a second file with a row for each array valuewhich has a link to the customer information file.OrIs there a way to efficiently process the original file once it isloaded into the staging tables in the database ?i.e.File 1 - Core Customer Information====================================Current Record Structure :Record NumberAccount NumberAccount NameOther Account DetailsTotalNumberOfArrayFieldsPopulatedFile 2 - Array Information====================================Record NumberArray :Value1Value2Value3....up to Value50 (if required)File 1========================12344,Mr Agent,$29.95,212345,Mr Jones,$14.95,312345,Mr Jones,$14.00,112345,Mr Jones,$15.95,212346,Mr Smith,$19.95,312346,Mr Smith,$19.00,112347,Mr Acant,$99.95,7File 2========================12344,BX12312344,BX12412345,XX12312345,XX12412345,XX12512345,XY12312345,XZ12412345,XZ12512346,AX12312346,AX12412346,AX12512346,BY12312347,CX12312347,CX12412347,CX12512347,CX12612347,CX12712347,CX12812347,CX129At times the individual array values will be used for look ups thoughessentially the Customer Information record will be the primary lookupdata.I'm leaning toward changing my COBOL code and creating the 2nd outputunless someone can suggest a simple way to process the information onceloaded into the table.Any help that could be suggested would be greatly appreciated.
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Jan 18, 2007
Hi,
I have a little experience with SSIS (but a lot with DTS) and none with CRM 3.0.
Is it possible to use SSIS to import flat files into CRM 3.0 ?
And how ?
I read something that CRM 3.0 uses SQL server 2000. Should I upgrade it SQL server 2005 ?
Any suggestion where to read about this ?
Thanks in advance
Constantijn Enders
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Jul 14, 2006
Hi All,
I am using Bulk Insert task to laod data from .dat file to SQL table but getting an error below.
[Bulk Insert Task] Error: An error occurred with the following error message: "Cannot fetch a row from OLE DB provider "BULK" for linked server "(null)".The OLE DB provider "BULK" for linked server "(null)" reported an error. The provider did not give any information about the error.The bulk load failed. The column is too long in the data file for row 1, column 1. Verify that the field terminator and row terminator are specified correctly.".
Any help will be appreciated.
Thanks.
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Aug 21, 2007
I tried to load data from the table in different server.
If I just want to limit one year data ( using date_key in that table ) then what task do I need to do that?
Please let me know.
Thanks.
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Nov 8, 2006
Hi,
How to extract and Load Data using ADO.NET in SSIS.i hope to extract data we have DataReader source .but how to load (Insert) data with ADO.NET ?.and is ADO.Net quicker than OLEDB ?
Thanks
Jegan.T
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Aug 9, 2006
Hi all,
I have some data in a CSV file that looks like this:
<Column Name1>, <Column Name2>, <Column Name3>, <Column NameN>
<Column Value1>, <Column Value2>, <Column Value3>, <Column ValueN>
<Blank Line>
<Column Name1>, <Column Name2>, <Column Name3>, <Column Name4>, <Column NameN>
<Column Value1>, <Column Value2>, <Column Value3>, <Column Value4>, <Column ValueN>
The rub is that I don't know how many columns I am going to have but each <Column Name> has a <Column Value>.
I need to load the data into different tables based on the <Column Name>.
Any ideas????
Thanks for all the information this forum has very helpful!!!
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Mar 13, 2008
Hello
I am looking for some advise.
I have a process to import flat text files. We are importing data from five vendors. These files are seperated by vendor with each vendor having their own directory. The general file layouts are different for each vendor.
Each vendor may have up to five different types of files to be imported that are their one directory (sales, inventory, transactions etc). Sales file for Vendor 1 is different layout than sales file for Vendor 2.
Each vendor may have multiple instances of each type (store 1 inventory, store 2 inventory, store 1 sales, store 2 sales etc.) There could be up to five hundred files (of the five different types) in a given vendors directory.
I am using an import package. This package has five (.dtsx files) different data flows. Each of these data flows has connection managers that connect to the specific types of files (sales, inventory, transactions etc) for that vendor.
My current play is to have the data flow(.dtsx file) parse the store name (from the file name) for each of the file types. It would load/process each of the available file formats (sales, inventory, transactions etc) for that store in that vendor folder. We want the process to load all data files from a given store. It would then move on to the next available store (same vendor). I would like to set the process to run multithreaded so that I am loading as many of the stores for that vendor as possible (there could be over a hundred stores for each vendor) at the same time.
How do I get each dataflow to run multiple instances (Instance1 for vendor(x).dtsx, instance2 for vendor(x).dtsx etc) for maximum Vendor(x) input.
What is the best way/process/design to track each store name so that each process (instance1, instance2 etc) is loading a distinct store. The files will be moved to a history folder as they are processed. Should I have a different process that gets each store name initially and then saves that information to a SQL table. The dataflow would load the next available store name from the SQL table query and let SQL lock that store?
Any suggestions are welcome and appreciated!
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Jan 21, 2008
I have to Load Contacts data from different systems into a single SQL Server 2005 table, the scenario is the following :
I have three systems System 1,System 2 and System 3
Step 1 Load Data From System 1
Step 2 Load Data from System 2 and if there are matching contacts with System 1, then match their details, keep System 1 details
Step 3 Load Data from System 3 and if there are matching contacts with System 2, then match their details and if different, flag them, do the same with System details.
The unique ids in the three systems are not the same so only way to match is to do a concatenation of name + address + zip code
Is there any other efficient way to do this...
Please advise
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Sep 18, 2007
Hi ,
My Input is a flat file source and it has spaces in few columns in the data . These columns are linked to another table as a foreign key and when i try loading them in a relational structure Foreigh key violation is occuring , is there a standard method to replace these spaces .
what approach should i take so that data gets loaded in a relational structure.
for example
Name Age Salary Address
dsds 23 fghghgh
Salary description level
2345 nnncncn 4
here salary is used in this example , the datatype is char in real scenario
what approach should i take to load the data in with cleansing the spaces in ssis
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Dec 27, 2006
everything is ok.. the connection is on..the page can be loaded... no error....
BUT the data from the database cannot be retrieved... as in.. it just didnt load on screen...
i dont know whats wrong... i have follow all the steps show on a book.. can anyone pls help me?? thks
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Jan 22, 2006
Hi,
I have problem I'm hoping someone can give me some pointers with.
I need to load data from several text files into one table. The format of the files are simple - each line is comma separated, with double quotes around each element e.g.
"parameter 1","value 1","parameter 2","value 2"....
"parameter 12","value 12","parameter 13","value 13"...
However, the files themselves will have different numbers of columns e.g file 1 may have 8 columns, file 2 may have 16 columns.
I'm going to load the data into a table that has at least as many columns as the longest file. The table columns are all varchar, and are named simply as [Col001] [Col002] [Col003] etc...
The first two columns of this table must be left empty during the load (I use these later on), so the data entry will start at [Col003].
My question is what is the best way to do this? I thought perhaps using a BULK INSERT in a stored procedure might do the trick, but I haven't used it before and haven't got very far. I gather another approach might be to use bcp utility. Someone has also suggested a DTS package, but the filenames will be suffixed with current date/time stamp, so i don't think that will work.
My preferred appraoch would be the BULK INSERT..but i'm open to any pointers.
Many Thanks
Greg
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Feb 24, 2004
I am extracting data from an SQLServer database to load into Teradata using DTS. The performance is abysmal. The same data in a text file loads quickly via multiload. I can move the data to other DBMSs via DTS quickly as well. Is there some way for me to improve the elapsed time/performance while using DTS? If not, what is the best way to move data from SQLServer into Teradata?
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May 23, 2008
I have a sql server database linked to my application. I have a table that I want one of the columns (Service Perfomed) to load in a list box. When I start the application nothing appears in the list box. What could I be doing wrong?
Here the code the visual studio created:
Private Sub MainForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) _
Handles MyBase.Load
Me.ServiceTableAdapter.Fill(Me.MaintenanceRecordsDataSet.Service)
End Sub
I've tried combo box, text box and these seem to work fine but not the list box.
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Aug 9, 2007
I'm fairly new to SQL and I have been asked to load multiple tables with duplicate and inconsistent data into a single table. Each source (table) has been assigned a rank in terms of the quality and reliability. After some thought, I have come up with this solution to get all of the data loaded based on rank.
Does anyone know of a better way to do this?
Value is a unique key.
SELECT *
FROM table_1
union
SELECT *
FROM table_2
where (value + '_' + yr) in
( select value + '_' + yr
from table_2
except
select value + '_' + yr
from table_1)
union
SELECT *
FROM table_3
where (value + '_' + yr) in
( select value + '_' + yr
from table_3
except
select value + '_' + yr
from table_2
except
select value + '_' + yr
from table_1)
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Jul 10, 2006
I need to load a lot of data into a sql table as fast as possible. (All data is string data, CSV file). I have read that the "fastest" way to load data is using the "Fast Load" option of the OLEDB Destination but I have also read that the "SQL Server" Destination is fast.
1. Is there a general consensus as to which way is the quicksest load?
2. The file is a CSV file. Would a fixed-format file be faster to read?
TIA,
barkingdog
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Jan 7, 2008
For example load 0.15 from Excel to varchar field in database and get 14.99999, why?
How just get 0.15 in varchar field?
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