Reading And Writing To Flat File
Apr 27, 2006
I'm doing a test package which reads a flat file, makes an adjustment using the derived column task and writes to the same flat file. But, the read locks the flat file, so the write can't access it. Any ideas for a resolution?
Thanks,
Dave
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Nov 22, 2004
Halo, I am a bit new to this
Please can someone help me, I would like to write a file(Any type) to a SQL database like a attached document(s) for the current record and be able to detatch the document when needed.
I use VB.NET for a ASP.NET app.
I basicly would like to attach documents to a piece of equipment may it be any kind and if the user views the equipment he will be able to detatch the documents for that piece of equipment and open it with the correct software.
PLEASE HELP!!!!!!!
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Dec 12, 2006
I get the following error when reading a flat file : [Credit Information 1 [1]] Error: Data conversion failed. The data conversion for column "AccountName" returned status value 4 and status text "Text was truncated or one or more characters had no match in the target code page.".
I did check all the mappings, and everything seems to be fine, the field is read in as a string. I also check for any strange characters that can possibly cause this error but the value of the field only contains a person's name and spaces at the end.
Does anyone have any ideas what might be the cause of the error?
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Dec 18, 2007
Hi
I have a data flow task where I have to write to a flat file. It works fine for me. But the thing is next timeI run the package it must write the data in the OLDEB source to a different copy. Usually the data is overwritten or appended to already existing data. What I want is everytime the package is run the data must be written to a different copy.
Thanks
Sai Abhiram Bandhakavi
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Nov 29, 2006
Hello,
I am making my first attempt at creating a script for a Script Task. The script needs to do the following;
1. find the length of each record in a single fixed width flat file
-file location; C:LearningSettlementDataTestSC15_CopiesSingleFile
-file name; CDNSC.CDNSC.SC0015.111062006 (no file extension)
2. if a record is found that is longer than 384 characters;
a. copy the record out to a text file
-location;C:LearningSettlementDataTestSC15_CopiesErrantRecords
-file name; ErrantRecords.txt
b. delete record from the flat file where the record length is > 384.
If I can get this to work on a single file, I want to implement it with multiple files. I would imagine that using a ForEachLoop container with the script task 'inside' would be the way to go for multiple files. I have a connection manager set up for the single file and a MultiFlatFile connection manager set up for the whole collection of files. All of the files have the same schema. I don't know if the connection managers are going to be useful to me with what I'm trying to do, but I have them set up.
If you have some input on where I can find resources on how to do this, or have some code to pass along, please share.
Thank you for your help!
CSDunn
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Jun 5, 2007
Hi,
I have a very simple question, how do i read the first couple of lines only from a flat file source. Let me illustrate with an example:
**Source file***
Date of refresh 04/05/06 **
abc, 123
bac, 156
I need a way to read the first line 'Date of refresh 04/05/06 **' and get the date '04/05/06' ; and store the date in a variable.
Right now, I have a flat file source and a script component, which receives a connection from the flat file source, The script component is reading the lines, but thrice instead of once. It would be great if I can program the script component to terminate after reading the first line only. Any help would be appreciated very much.
Thanks
Bidyut
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Jul 6, 2007
Hi,
How do i sequentially read the lines of the flat file that have different structures inside on how to parse it and store them in a table? Let's say, I have this excerpt from the file:
HA111Header1234
KLName1
KLName2
HA222Header4567
KLName3
KLName4
Below are the structures:
If Record type = 'HA' then
Length
Recordtype 2
Code 3
Description 10
else if Record type = 'KL' then
Length
Recordtype 2
Name 5
Code 3
The Code in the KL record type is actually the code in the 'HA' line. So to store the KLName1 in the relational table, it's value for the code field is 111. The same goes for KLName4 which has 222 code. So, when a record type 'HA' is encountered, it's like i want to save its value of the code in a variable and use that to populate the code field of the following recordtype 'KL'.
Can this be possible in Integration Services in which we will use the IS objects themselves to loop through the lines instead of creating a script (programming using script task... i think)?
cherriesh
cherriesh.
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Jul 11, 2007
I have a Foreach loop which scans a table, and gets names of a bunch of procedures, and then back in the foreach loop, they get executed. Im trying to figure out how I can create a sort of log file to say the name of the procedure that is getting executed currently and the current date time stamp onto a flat file. I havent been able to figure this out yet..anyone know how to do this? I grab the names of the storedprocedures from the table and store it in a variable and use the name from the variable to actually execute the stored procedure.
I guess in essence, the question is how do i directly write lines of 'text' (from say a variable) into a flat file.
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Dec 19, 2007
Hi,
I am writing to a flat file. When the data is written to a flat file the columns have to be tilde seperated i.e ~.
What I am doing is I am taking a destintaion text file and having all the columns as tild seperated. Is there any way I can
avoid doing this. That is I should not mention couluns in the text file.
Lastly I want the columns to have a width that is fixed.
How I can do this.
Thanks
Sai
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Feb 9, 2012
I have a simple SSIS package -> It reads a local text file which has 10 rows of data ( id, name, telephone # ) and puts it into a table.
It uses the "SSIS Flat File source" to read and a "SQL Command" to insert into the table. I can see that it reads line by line and puts each line into one row in my table.
Now, my production data is over 5 GiG of mainframe data and it seems their data is arranged in some hierarchical form.. so the position or arrangement of data in that file is important.
I pulled the data using my package and as far as I can see , my SSIS package pulled one line at a time ( from the flat file) and pushed it into my table. For each row, I also created an identity column in my table to be able to identify the positional arrangement of the hierarchical data and then use relational mappings to suit our business needs.
In all of this, my assumption is -
"SSIS reads one line at a time, inserts to my table and goes down to the next line .
It does NOT read a snapshot of rows from the flat file so as to write them into the table using internal ordering methods based on that particular snapshot "
My question is .. is my assumption correct ?
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Oct 12, 2007
Hi,
I am reading a flat file in to SSIS. In the script, I want to process differently depending on the length of the row. However, since I am new to .net, I can't figure out the syntax to find the length of the row.
Can anyone tell me the syntax?
Thanks,
Linda
Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer)
'Dim d As Double
If Row.MemberSourceLine.ToString.Length.Equals(267) Then <-- my latest try, but it does not work....
Row.WholesalerCode = Row.MemberSourceLine.ToString.Substring(1, 5)
Row.UPCNumber = Row.MemberSourceLine.ToString.Substring(34, 12)
'Row.SKUNumber = Row.MemberSourceLine.ToString.Substring(6, 14)
End If
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Dec 2, 2006
I'm writing to a flat file destination (CSV file) which contains 2 header rows, lets call it Col1 and Col2.
For some reason, the header rows seem to get duplicated in the output - i.e.
Col1,Col2
A,B
Col1,Col2
C,D
Is there any way to resolve this?
I don't want the file to be overwritten everytime since its used for record-keeping purposes.
Thanks
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Sep 18, 2006
I'm unable to figure out how to write a column header to my flat file destination. My source is a OLE DB SQL query and I need the column names as a header row in my text file destination. This seems easy but the closet I can find is hardcoding the column header row in the header property. Is this the only option?
Thanks
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Jul 13, 2007
Hi,
I'm wondering if there is any way to get SSIS to notice, in the Flat File Source, that a "Ragged right" text input file has a record that is too short to populate all the specified columns.
I am reading data from a file that is supposed to be fixed length records, but record 193,591 (out of approx. 500,000) is 20 bytes short of the fixed length (60 bytes). So I changed the input to "ragged right" and found that I can thereby continue to read the file, and load the data (after setting the "maximum errors" to a number greater than the initial "1"). (Without this change to "ragged right", every record after the bad one was "out of synch" with the column arrangement -- so they never made it into the database table destination.)
But the "failures" I am now getting are during the Data Conversion step, when I try to convert some columns to integers (from text, in the input stream). And by looking at the data with a "Redirect Row" setting for the Data Conversion step, I am able to see that the Flat File Source is reading "right past the end of the row."
Is there a way to get the Flat File Source to honor the CR-LF record terminator, and decide that some text columns should contain "nothing" (NULL or zero-length strings), rather than the bytes that contain the CR-LF and the initial text from the next record? Can this somehow be noticed as an error condition?
Dan
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Oct 22, 2007
Hi,
I have the following problem: I'm connected to flat file source and trying to read data that is later inserted in an MS Access database. Everything wokrs fine instead of one thing - when I have null values in the flat file, I want those NULL values to be inserted in the MS Access db, instead of that what happens is that I actually get the default values for a column type from the flat file and later insert that defalut value. For example if I have a null value in an four-bite-signed-integer column of the flat file, I get 0 as value.
I thouth of solution using a "Derived Column" transformation which can transform the zeros into nulls, but decided to check with you guys if there is a smarter thing to do (for example to edit the flat file source to read the NULLs correctly).
Any advice is appreciated! Many thanks
Ventsy
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Aug 31, 2007
Hi,
How I set the Transform Data Task Property in SSIS package????
As I designed SSIS.. where I mapped my text file columns to database table columns but if I selected wrong input text file having less columns than database table then how I will come to know that it is wrong input file????
or in the correct file suppose if i have three columns input then at in table i am getting worng values i.e. 1st column of 2nd row is placed in fourth column of previous row in DB table......that is very weird situation
suppose my DB table contain 4 columns and my (wrong) text file contain 2 columns then i should get error message that column003 is not found???? like that happened in DTS 2000
my SSIS mapping is like
Table Column-------------->Text file
ID------------------------------->ID
Name------------------------->Name
City---------------------------->City
Country---------------------->Country
Now suppose my text file contain only these records with CSV
1;Jhon
2;Paul
Then in DB table I am getting
1 Jhon 2 Paul
Please help me out...
T.I.A
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Aug 30, 2007
Flat file is the source for to load the data into a table. I am using "Derived Column Component" for the data validation.
"Derived Column Component" Fails then i am writing/redirecting the records into the Flat File using "Flat File Destination" component.
It works fine except the following the issue.
Issue:
The derived columun value (that cause an error) is not get inserted into the Flat File
Scenario:
the data comes as "000000" and tring to convert to date format
(DT_DATE)("20" + RIGHT(Check_Date,2) + "/" + SUBSTRING(Check_Date,1,LEN(Check_Date) - 4) + "/" + SUBSTRING(Check_Date,LEN(Check_Date) - 3,2))
The above expression is working fine, except the data 000000 not passed into the Flat File Destination.
Pls advise. Thank you.
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Mar 19, 2007
I have a set of parent/child records that need to be exported to a space delimited Flat File. Each parent record must be followed by 3 child records, each on their own line with different format.
I have a prototype using the Derived Column component that concatinates the various fields of each record into one "wide" text column. This fools SSIS to think that each row has the same format. Then I merge them together using an artificial sort id. But this seems overly tedious and very brittle.
What would be the best approach to writing these records out? I'm hoping there is a better more maintainable method.
Thanks,
Jon
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Sep 21, 2006
Hi Folks,
I would like to write my table to a delimited file but I seem to have no choice but to use comma as the delimiter. Is there any way I can choose the delimiter ?
Thanks.
Sid
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Apr 18, 2007
Hi,
I am trying to write to a fixed format flat file using Flat File Destination Data Flow Component. I have all required information gathered from more than one sources. But when I tried to format the columns to a big string that will make up one line in the flat file, I could not figure out how to do that. Couple of issues that I am facing are:
How to padd different columns? For example, One interger column has could be 1 to 10 character long in my case. When I convert to string, dont know how to padd the remaining characters i.e. if the value of integer is '1234', it should be written to file as '1234 ' . Which transformation is best in this case, if available?
How to convert T-SQL datetime to a specific date and time format to write in the flate file? I have to write these date formats depending upon one of the parameters passed.
Also, I dont want to put a delimiter at the end of each column, just the new line characters at the end of each record.
Some of the columns has some unwanted characters (like new line characters) how to find them and remove them from the string.
Can we directly write columns to a specific position in the flat file? e.g. col 1 a position 1 and col2 starts at postion 20 etc.
Your co-operation will be appreciated.
Thanks,
Paraclete
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Jun 13, 2007
I have a variable defined as "Country". Based on the value, the header row printed needs to be different.
I've already created a 'HeaderRow' variable that I'm able to set using a script task. But how can you set the Header text value at run time from the variable? There is no expression defined for the Header with the Flat File Destination object, and when I attempt to reference the HeaderRow variable as the Header text, the variable name is printed as the header.
Another approach I tried was to write the Header Row separately through another data flow task, but the issue here is: what is the input source when all you have is a Country variable?
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Sep 13, 2005
I have a package that contains three database tables (Header, detail and trailer record) each table is connected via a OLE DB source in SSIS. Each table varies in the amount of colums it holds and niether of the tables have the same field names. I need to transfer all data, from each table, in order, to a flat file destination.
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Apr 24, 2006
We are using an ADO.NET provider in SSIS to read data from a SQL Server 2000 table that contains DateTime columns to write to a Flat File Destination. When the date values are written to the file they are formatted in TimeStamp to the 10th decimal position; e.g.€œ2006-04-24 12:00:00.123000000€?. Since SQL Server supports values to Timestamp(3), we need to truncate the last seven zeros to put the data in this format €œ2006-04-24 12:00:00.123€? to keep the file as small as possible.
Since we have several hundred DateTime columns in scope for our requirements we are looking for the least logic/effort to accomplish this task. We can do this via Data Conversion and Derived Column transformations to cast the dates and strings but it is very labor intensive. It would be something like singing 99 bottles of beer on the wall eight times in a row with each verse taking 3 minutes each. Yikes.
We have tried casting the DateTime columns to varchar in the SELECT statement but receive this format €œApr 24 2006 12:22PM€?.
Is there a configuration we've missed that forces timestamp(10) with non significant digits?
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Nov 9, 2007
Hello all,
I was trying to run a test to write a ebcdic file out with a comp - 3 number (testing this for other people) and have run into a problem writing the string out to the flat file destination. I have the following script component:
Code Block
' Microsoft SQL Server Integration Services user script component
' This is your new script component in Microsoft Visual Basic .NET
' ScriptMain is the entrypoint class for script components
Imports System
Imports System.Data
Imports System.Math
Imports Microsoft.SqlServer.Dts.Pipeline.Wrapper
Imports Microsoft.SqlServer.Dts.Runtime.Wrapper
Public Class ScriptMain
Inherits UserComponent
Public Overrides Sub CreateNewOutputRows()
'
' Add rows by calling AddRow method on member variable called "Buffer"
' E.g., MyOutputBuffer.AddRow() if your output was named "My Output"
'
Output0Buffer.AddRow()
Dim myByteArray() As Byte = {&H12, &H34, &H56, &H7F}
Output0Buffer.myByteStream = myByteArray
Output0Buffer.myString = "ABCD"
Output0Buffer.myString2 = "B123"
myByteArray = Nothing
End Sub
End Class
I have added myByteStream as a DT_BYTES length 4, myString as (DT_STR, 4, 37) and myString2 as (DT_STR, 4, 37) to the output 0 buffer.
I then add a flat file destination with code set 37 (ebcdic us / canda) with the corresponding columns using fixed width.
When i place a dataviewer on the line between the two the output looks as I expect ("0x12 0x34 0x56 0x7F", "ABCD", "B123"). However, when it gets to the flat file destination it errors out with the following:
Code Block
[Flat File Destination [54]] Error: Data conversion failed. The data conversion for column "myByteStream" returned status value 4 and status text "Text was truncated or one or more characters had no match in the target code page.".
If i increase the size of the byte stream (say, to 50) the error goes away but I am left with the string "1234567F" instead of the appropriate hex values. Any clues on how to go about this? I obviously don't care if it gets transferred to "readable" text as this is supposed to be a binary stream, thus the no match in target page seems superfulous but is probably what is causing the problems.
NOTE: this is relating to the following thread (http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=2300539&SiteID=1) in that I am trying to determine why these people are not seeing the "UseBinaryFormat" when importing an EBCDIC file (i see this fine when i use an ftp'd file, but it auto converts to ascii) with comp-3 values. I also see the "UseBinaryFormat" when I am importing a regular EBCDIC file which I create that has no import errors with zoned decimals.
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Aug 3, 2005
I have a tab delimited flat file with say 60 columns. All columns can have null values. The file contains a blank tab for nulls.
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Feb 16, 2008
I need to select all the records in a table, loop through them one by one, calculating some new field data, and then write the new data back to the same table. Here is the basic structure of what I've come up with:<CODE>SqlCmd = SqlConn.CreateCommandSqlStatement = "SELECT ProductID, Name FROM tblProducts"SqlCmd.CommandText = SqlStatementSqlRdr = SqlCmd.ExecuteReaderIf SqlRdr.HasRows Then While SqlRdr.Read If SqlRdr.FieldCount > 0 Then ... SqlWriteCmd = SqlConn.CreateCommand SqlStatement = "UPDATE tblProducts SET Name = '" & NewName & "' WHERE ProductID = " & CStr(ProductID) SqlWriteCmd.CommandText = SqlStatement SqlWriteCmd.ExecuteNonQuery() SqlWriteCmd = Nothing End If End WhileEnd IfSqlRdr.Close()SqlCmd = Nothing </CODE>I get an error that tells me to close out the Reader before trying to execute the write query. But I can't close it out for the loop to work properly. So I assume that there must be another way to do this simple task, but I'm so new to all of this that I need some help! Thanks!
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Jun 13, 2007
I am new to database programming. What I want to do is have a database on a clients PC to use as data storage. This program will connect to a program running on our server (via TCP) which will store this information in another database. The clients database will only be accessed by my program - so I think that I don't need to register it with SQLEXPRESS. The servers database will probably need to be so another program can access it.
The problem I was having was writing and reading to a database that I created inside Visual Studio 2005. As I see it, there could be three issues - reading, writing, or setup of the database. To find out this issue I downloaded the Northwind database. The code below returns column 0 row 0 of the Customers table.
Code Snippet
NORTHWNDDataSet northwindDataSet = new NORTHWNDDataSet();
NORTHWNDDataSetTableAdapters.CustomersTableAdapter customersTableAdapter = new NORTHWNDDataSetTableAdapters.CustomersTableAdapter();
customersTableAdapter.Fill(northwindDataSet.Customers);
string data = (string)northwindDataSet.Customers.Rows[0].ItemArray[0];
Console.WriteLine("COL 0 - ROW 0: " + data);
This code returns "ALFKI". Which is what is in col 0 row 0 (This can be checked by right clicking on the Customers table in NorthWNDdataset.xsd and selecting preview data).
Next is writing. This is where I have the issues. The method below is one way that I tryed.
Code Snippet
DataRow row = northwindDataSet.Customers.NewRow();
row[0] = "1";
row[1] = "2";
row[2] = "3";
row[3] = "4";
row[4] = "5";
row[5] = "6";
row[6] = "7";
row[7] = "8";
row[8] = "9";
row[9] = "10";
row[10] = "11";
northwindDataSet.Customers.Rows.Add(row);
try
{ customersTableAdapter.Update(northwindDataSet.Customers);//table);
northwindDataSet.AcceptChanges();
MessageBox.Show("Update worked");
}
catch
{
MessageBox.Show("Update do not work!");
}
The messagebox shows "Update worked" - yet the data did not get added.
Thanks in advance.
Using:
Visual Studio 2005
C#
SQL Server Management Studio Express
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Sep 9, 2004
I'm trying to read a byte array of an image datatype from sql server, and then to put this in another field in the database. I get a byte array, but somehow the image doesn't get into the db well with the sql parameters. Does anyone have an idea how to tackle this problem?
Thanks a lot, Hugo
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Apr 27, 2006
It looks like its not possible to both read and write the same variable from a script using the conventional Me.Variables.<variable> syntax.
I can only assign a variable as Readonly or ReadWrite and not both. If I assign it ReadOnly I can only access it in the PreExecute subroutine. If I assign it ReadWrite I can only access it in the PostExecute subroutine (in fact doesn't this just make it WriteOnly in fact?). So I can only either read in or read out a variable using this syntax, noth both. Is this right?
So the read and write a variable to a script, the VariableDispenser approach is the only option to use. Is this right? and is it documented somewhere that this is how to use variables in scripts. Thanks.
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Jul 20, 2007
Hi,
I want to make an application that fills in the variables into a dtsx package (ssis).
I'm able to read the variables created in the package
Application app = new Application();
Package p = app.LoadPackage(pkg, null);
Connections myConns = p.Connections;
foreach( Variable v in p.Variables){
Console.WriteLine(v.Name);
Console.WriteLine(v.Value);
Console.WriteLine(v.Namespace);
Console.WriteLine("/////////////////////");
Console.WriteLine("/////////////////////");
}
i'm also able to add on
Variable myVar = p.Variables.Add("amyCustomVar", false, "User", "3")
When the applications is closed the package does not contain the variable. So this is all done in memory.
Is their a way to actually write the variable into the physical package.
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Feb 14, 2008
Hi,
I have a data structure called 'Quote' which contains a number of different variables and controls ranging from text boxes, check boxes and radio buttons, i need to be able to read and write this from a database.
First I think a description of my overall project is needed:
Project Description
I have been given a brief that basically says: i have to create a programmed solution in VB to solve a problem. This problem can be anything we like, and I personally have chosen to create a program that manages quotes for building Log Cabins (this is very contrived and far from anything someone would do in the real world).
My solution will allow a generic user to create a quote (using a form with controls such as text boxes, check boxes, radio buttons) , and then save this to file. These users may then wish to load/edit this quote at a later date, from another form.
Whilst completing this project, i'll only have up to about 5 records (quotes) within the system, so i dont need the ability to store hundreds of records. And each record will be relatively short, with only about 10-15 data items within the data structure.
Also the Admin (or business owner in this case) need to be able to view all saved quotes in a presentable format, and edit them if needs be, from within this same program.
This solution does not need to be absolutely perfect and 100% efficiently coded, or have all the bells and whistles a real-world program would have. This is for an A level computing project by the way.
So basically, i need to be able to read from the database (to populate a Data Grid (i imagine this is best way?)) and so Admin can access any quote and edit it (editing is not vital, but viewing/printing is. Maybe i should stop at just viewing any quote?). Also i need generic users to be able to fill in the Edit Quote form and then save this data into the database.
And is a data structure really required for me to use a database?
I've never used databases in VB before (but have used them elsewhere, mainly Access) and so am completely new to this. Any help will be much appreciated.
Thanks
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Mar 20, 2007
We have a package that is using a ForEach loop container to access files on a network drive. For some reason I am getting a message that the ForEach enumerator is empty and did not find any files that matched the pattern. For the pattern I left the default *.* for testing purposes. I have specified the file folder as \remoteserverfilesharesubfolder and also as \remoteserverc$filesharesubfolder and have gotten the same message. However when I map a network drive and set the file folder to the network drive it finds the files. Is this a permissions issue?
After I finish processing the file I want to move it to a new directory. Once this is deployed in production, the package will not be running under a domain account and probably won't have access to the network folder. Is there any way to specifiy in the connection manager itself that it should use a specific account to access the folder?
TIA,
Sabrina
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Aug 24, 2007
Hi,
I am testing SSIS and have created a Flat File Destination. I defined the Flat File Connection as New for the first time and it worked fine. Now, I would like to go back and modify the Flat File Connection in the Flat File Destination Editor, but it allows only to create a New connection rather allowing me to edit the existing one. For testing, I can go back and create a new connection, but if my connection had 50-100 columns then it would be an issue to re-create it from scratch.
Did someone else faced this issue?
Thanks,
AQ
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