Reading First Few Lines From Flat File

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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Removing Lines From A Flat File

Oct 5, 2006

Hi There,

I am parsing a directory of flat files and looping through it with a foreach loop. Some of the files have lines that contain characters that I would like to remove. In fact, it would be good if I could remove the entire line. Is there a way to do this with a Script Task or some other way.

Thanks for your help.

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I can't believe it's been a few days and I can't figure this out. We have a flat file (purchaseOrder.txt) that has header and detail lines. It gets dropped in a folder. I need to pick it up and insert it into normalized tables and/or transform it into another file structure or .NET class.

10001,2005/01/01,some more data
SOME PRODUCT 1, 10
SOME PRODUCT 2, 5

Can somebody place give me some guidance on how to do this in SSIS?

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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.".

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Does anyone have any ideas what might be the cause of the error?

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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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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,
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Sequentially Reading The Flat File

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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Reading From SSIS Flat File Source?

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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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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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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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

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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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Did someone else faced this issue?


Thanks,
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Hi,

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Feb 11, 2008

First, a couple of important bits of information. Until last week, I had never touched SISS, and therefore, I know very little about it. I just never had the need to use it...until now. I was able to convert my first 3 flat files to SQL2005 tables by right clicking on "SISS Package" and choosing "SISS Import and Export Wizard". That is the extent of my knowledge! So please, please, please be patient with me and be as descriptive as possible.

I thought I could attach some sample files to this post, but it doesn't look like I can. I'll just paste the information below in two separate code boxes. The first code box is the flat file specifications and the second one is a sample single line flat file similar to what I'm dealing with (the real flat file is over 2 gigs).

My questions are below the sample files.


Code Snippet
Record Length 400

Positions Length FieldName

Record Type 01
1,2 L=2 Record Type (Always "01")
3,12 L=10 Site Name
13,19 L=7 Account Number
20,29 L=10 Sub Account
30,35 L=6 Balance
36,37 L=1 Active
37,41 L=5 Filler
Record Type 02
1,2 L=2 Record Type (Always "02")
3,4 L=2 State
5,30 L=26 Address
31,41 L=11 Filler
Record Type 03
1,2 L=2 Record Type (Always "03")
3,6 L=4 Coder
7,20 L=14 Locator ID
21,22 L=2 Age
23,41 L=19 Filler
Record Type 04
1,2 L=2 Record Type (Always "04")
3,9 L=7 Process
10,19 L=10 Client
20,26 L=6 DOB
26,41 L=16 Filler
Record Type 05
1,2 L=2 Record Type (Always "05")
3,16 L=14 Guarantor
17,22 L=6 Guar Account
23,23 L=1 Active Guar
**There can be multiple 05 records, one for each Guarantor on the account**


and the single line flat file...



Code Snippet
01Site1 12345 0000098765 Y 02NY1155 12th Street 03ELL 0522071678 29 04TestingSmith,Paul071678 05Smith, Jane 445978N 05Smith, Julie 445989N 05Smith, Jenny 445915N 01Site2 12346 0000098766 N 02MN615 Woodland Ct 04InfoJones,Chris 012001 01Site3 12347 0000098767 Y 02IN89 Jade Street 03OWB 6429051282 25 04Screen New,Katie 879500





As you can see, each entry could have any number of records and multiples of some of the record types, with one exception, every entry must have a "01" record and can only have one "01" record. Oh, and each record has a length of 400.

I need to get this information into a SQL 2005 database so I can create a front end for accessing the data. Originally, I wanted one line for each account and have null values listed for entries that don't have a specific record. Now that I've looked at the data again, that doesn't look like a good idea. I think a better way to do it would be to create 5 different tables, one for each record type. However, records 2 through 5 don't have anything I can make a primary key. So here are my questions...


Is it possible to make 5 tables from this one file, one table for each of the record types?

If so, can I copy the Account number in record 01, position 13-19 in each of the subsequent record types (that way I could link the tables as needed)?

Can this be done using the SISS Import and Export Wizard to create the package? If not, I'm going to need some very basic step by step instructions on how to create the package.

Is SISS the best way to do this conversion or is there another program that would be better to use?
I know this is a huge question and I appreciate the help of anyone who boldly decides to help me! Thank you in advance and I welcome anyone's suggestions!

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http://www.webfound.net/flat_file_example.txt

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############################################################
# Market Issue Lookup
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###########################################################
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