Binary Column Or Flat File Best Practices?
Jul 17, 2007
I have a design oriented question for a system I am developing. Because of various business concerns and issues we have been moving towards as desing that brings files into the SQL 2005 system as binary columns in a database. These files will then be processed at a later time using SSIS into relation model tables.
Normally I would just have the process be files are placed on a FTP location (or other drive path) and a location is stored in the database versus the storing of them as binary rows in the database. Then later the SSIS package runs using the path information for the conneciton manager.
Based on the proposed binary design I have two questions.
1. Can anyone speak to the advantages, disadvantages, issues they have had, etc to the binary storage method?
2. Can anyone make a suggestion on how they would handle the pulling of the file out of SQL when the file is ready to process? Do you stream it to a file and rebuild it on the physical disk, to then just import it with a connection manager for the flat file structure.... or can you stream it directly into a conneciton manager that reads it like a flat file and parses the file without ever going to disk? Any information on suggested implementations would be helpful.
Thanks.
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Dec 27, 2006
Hi,
I have a situation where a tab limited text file is used to populate a sql server table.
The tab limited text file comes from a third party vendor. There are fixed number of columns we need to export to the sql server table. However the third party may add colums in the text file. Whenenver the text file has an added column (which we dont need to import) the build fails since the flat file connection manager does not create the metadata for it again. The problem goes away where I press the button "Reset Columns" since it builds the metadata then. Since we need to build the tables everyday we cannot automate it using SSIS because the metadata does not change automatically. Is there a way out in SSIS?
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May 11, 2006
I am transferring data from an OLEDB source to a Flat File Destination and I want the column width for all of the output columns to 30 (max width amongst the columns selected), but that is not refected in the Fixed Width Flat File that got created. The outputcolumnwidth seems to be the same as the inputcolumnwidth. Is there any other setting that I am possibly missing or is this a possible defect?
Any inputs will be appreciated.
M.Shah
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Jul 31, 2007
Hi everyone,
I am using SSIS, and I got the folowing error, I am loading several CSV files in a OLE DB, Becasuse the file is finishing and the tak dont realize of the anormal termination, making an overflow.
So basically what i want is to control the anormal ending of the csv file.
please can anyone help me ???
I am getting the following error after replacing the '""' with '|'.
The replacng is done becasue some text sting contains "" wherein the DFT was throwing an error as " The column delimiter could not foun".
[Flat File Source [8885]] Error: The column data for column "CountryId" overflowed the disk I/O buffer.
[Flat File Source [8885]] Error: An error occurred while skipping data rows.
[DTS.Pipeline] Error: The PrimeOutput method on component "Flat File Source" (8885) returned error code 0xC0202091. The component returned a failure code when the pipeline engine called PrimeOutput(). The meaning of the failure code is defined by the component, but the error is fatal and the pipeline stopped executing.
[DTS.Pipeline] Error: Thread "SourceThread0" has exited with error code 0xC0047038.
[DTS.Pipeline] Error: Thread "WorkThread0" received a shutdown signal and is terminating. The user requested a shutdown, or an error in another thread is causing the pipeline to shutdown.
[DTS.Pipeline] Error: Thread "WorkThread0" has exited with error code 0xC0047039.
[DTS.Pipeline] Information: Post Execute phase is beginning.
apprecite for immediate response.
Thanks in advance,
Anand
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May 22, 2014
Server is SQL 2000
I have a table with 10 rows with a varbinary column
I wish to concatenate all the binary column into a single binary column and then write that to another table within the database. This application splits a binary file (Word or PDF document) into multiple segments (this is Column2 as below)
example as follows
TableA
Column1 Column2 Column3
aaa 001 <some binary value>
aaa 002 <some binary value>
aaa 003 <some binary value>
aaa 004 <some binary value>
aaa 005 <some binary value>
desired results in TableB
Column1 Column2
aaa <concatenated value of above binary columns>
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Oct 3, 2007
hi,
on an oledb destination, I want to map one column from a flat file source object to two different columns on the database table.
I only seem to be able to map one to one.
How do I get the pointer to attach to two destination columns?
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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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Jan 30, 2004
Hi,
I have a text file with a single column that i need to bulk insert into a table with 2 colums - an ID (with identity turned on) and col2
my text file looks like:
row1
row2
row3
...
row10
so my bulk insert i have like this:
BULK INSERT test FROM 'd: estBig.txt'
WITH (
DATAFILETYPE = 'char',
FIELDTERMINATOR = ',',
ROWTERMINATOR = '
'
)
but i get the error:
Server: Msg 4866, Level 17, State 66, Line 1
Bulk Insert fails. Column is too long in the data file for row 1, column 1. Make sure the field terminator and row terminator are specified correctly.
However, as you can see from the text file, there is only one column, so i dont have any field terminators.
Any ideas how to make this work?
Thanks.
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Oct 2, 2007
hi -
I am totally new to SSIS etc and SQL 2005.
I have a dts task to recreate in SSIS. I have done most of them and muddled my way through, but this basic problem has got me stuck.
When mapping columns from my file to my ole db output table, I want to map one input column onto two output columns, but it will only seem to let me select one destination column for each input?
I have tried shift/alt/ctrl etc to try to get it to map to both columns but it wont have it.
How do I do it?
Also, somehow my Dataflow Sources tab has gone from the toolbox, and I can't seem to get it back any way - I switched on everything I could see and all components etc, but it is not in there as an option. How do I get it back in the toolbox?
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Aug 7, 2007
Hi Guys,
I hope this is easy stuff for you..
First of all i searched the forum but didnt exactly find what iam searching for:
I have a File folder which contains 1..n Files of the same type.
The files contain a DateValue at the beginning of each row. I now want to read the first Record of the file - extract the datevalue and search in my Importtable if there are any records with that Date. If there are allready Records with this date i know i allready imported that file and skip it in my For each File Container. If no records where found I want to copy them from the file to the table.
So I have a flatfile source and thoght I just make an oledb command task afterwards which looks like "Select count(*) from Import where Processdate = ?. and then a conditional split if the count == 0 or not... but i have problems getting the Count value out auf the OLD DB Command Task because everytime I try to add an outputcolumn i get the message: "An Output cannot be added to the output collection" and since there is no possibility to map an expression to the result...
I tried to workaround the problem using a lookup task.. but that seems to be the wrong way.
thanks for your help
bye
AS
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Jan 31, 2007
hi guys,
i am working on a project witch involves creating packages on-the-fly to import data from txt/csv/xls files according to some definitions on the database.
so far, i have been doing fine.
now we are planning the ASP.net page that enables the customer to define the input file format that will be imported to the system. we want it to have the same listBox as the FlatFileConnectionManager Editor has to define some properties, such as - column delimeiter.
the code to set the column delimiter looks like this:
SSISRunTime.IDTSConnectionManagerFlatFile90 myFilecn = null;
myFilecn = (SSISRunTime.IDTSConnectionManagerFlatFile90)package.Connections["InputFileConnection"].InnerObject;
DtsConvert.ToConnectionManager90(package.Connections["InputFileConnection"]);
SSISRunTime.IDTSConnectionManagerFlatFileColumn90 col
col = myFilecn.Columns.Add(); //.....
string colDelimiter ="|" ; // it actually gets the data from the database... but it is the same thing
col.ColumnDelimiter = colDelimiter;
when we deal with the simple characters- "," , ";" , "|" ... we have no problems with setting the delimiter. but how can i set the delimiter to Tab? or {CR} ? {LF}?
i tried to look at the dtsx- XML , and i see that the column delimiter that is defined when i choose Tab is: _x007C_, but when i try to do something like this:
col.ColumnDelimiter = "_x007C_" ;
it doesn't work. the same happens when I try "{t}" or "Tab".
how do i solve this problem, and enable the user to select Tab as a column delimiter?
Thanks!
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Oct 17, 2007
Hi,
I have a flat file with hundreds of columns.
I set up a flat file conn mgr with the following settings:
format: delimited
text qualifier: "
header row delimiter: {LF}
row delimiter: {CR}{LF}
column delimiter: comma
Now, here's the problem. In the preview screen, it shows only up to column 518 correctly. In column 519, it shows the remaining hundreds of columns all glommed together as one big string, like: "data", 123, 10/17/2007, "more data", etc
Anyways, I am wondering what to do about this?
When I attempt to run the data flow I get this error:
[Flat File Source [1]] Error: The column delimiter for column "Column 519" was not found.
However, the good news is that I only need the first 9 columns of the file. Some preprocessing in order, maybe?
Thanks!
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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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Feb 1, 2007
What is the best way to deal with a flat file source when you need to add a new column? This happens constantly in our Data Warehouse, another field gets added to one of the files to be imported, as users want more data items. When I originally set the file up in Connection Managers, I used Suggest File Types, and then many adjustments made to data types and lengths on the Advanced Tab because Suggest File Types goofs a lot even if you say to use 1000 rows. I have been using the Advanced Tab revisions to minimize the Derived Column entries. The file is importing nightly. Now I have new fields added to this file, and when I open the Connection Manager for the file, it does not recognize the new columns in the file unless I click Reset Fields. If I click Reset Fields, it wipes out all the Advanced Tab revisions! If I don't click Reset Fields, it doesn't seem to recognize that the new fields are in the file?
Is it a waste of time to make Advanced Tab type and length changes? Is it a better strategy to just use Suggest Types, and not change anything, and take whatever you get and set up more Derived Column entries? How did the designers intend for file changes to be handled?
Or is there an easy way to add new fields to this import that I am overlooking? I am finding it MUCH more laborious to set up or to modify a file load in SSIS than in DTS. In DTS, I just Edit the transformation, and add the field to the Source and Destination lists, and I'm good to go. My boss isn't understanding why a "better" version is taking so much more work!
thanks,
Holly
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Jul 30, 2007
I have a a flat file that consists of 2 Columns of data that need to overwrite an existing Table that has 3 Columns of data. The Import fails because the 3rd column on the table is a Date stamp column with the Data Type of "smalldatetime" and does not allow Null data. If I were to delete this 3rd column from the table the import works great but I lose the DateTime column. How can I use the Import Wizard to import the first 2 columns from a text file and update the 3rd column with the date and time? The wizard does not seem to let me update a column unless the data for this column comes from the flat file. Please assist, thanx.
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Feb 19, 2008
Good day everyone,
I have a package that reads data from a CSV file, transforms it and finally loads it in a destination DB table.
My current problem lies in the parsing of the input flat file. I shall illustrate it using a small example.
Source File:
P;Product-1;Short Description for product 1
P;Product-2;Short Description for product 2
Problem:
I configured the flat file connection manager to use semicolon as the column separator. But then I have received some sample flat files where I found that the semicolon might be sometimes used as content of a column data.
Possible Solutions:
I have thought about 3 different solution and I would like to get your feedback and recommendations about them.
Alternative 1:
Use a complex column delimiter, which wouldn't be used in the data.
Example:
P#~#Product-1#~#Short Description for product 1
P#~#Product-2#~#Short Description for product 2
Question 1:
- Is it possible to define such a customized column delimiter for the Flat File Connection Manager?
- If yes, how can I do this?
Alternative 2:
Use double quotes around the data, which the Flat File Source Adapter must somehow recognize and trim before pushing the data down the Data Flow.
Example:
"P";"Product-1";"Short Description for product 1"
"P";"Product-2";"Short Description for product 2"
Question 2:
- Is it possible to configure the Flat File Source Adapter to work as described?
- If yes, how can I do this?
Alternative 3:
Use a Script Component and write the needed code for parsing the Flat File.
Question 3:
- Do you have further suggestions/ideas for solving this parsing problem?
Thanks in advance and my regards,
Samar
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Oct 7, 2007
I have a few flat files that will be retrieved from some SFTP server. One of the flat file will act as a terminal file where it will specify the total number of records expected in each other the flat file.
Data in the terminal.txt
FileName TotalRecords
File1 1000
File2 1500
File3 2000
So, before transforming the data from the flat file sources into the target destination, i wish to do a row count checking for each of the flat file source to make sure that the number of records in the flat file source is tally with the number of records specify in the terminal.txt file. I'm able to get the number of records in each of the flat file by using the RowCount component but don't know how to get the data out from the terminal.txt file in order to make a rowcount comparison.
Can any1 help me on this? Or is there any other way we can do to make sure that the flat file source is alright before proceeding with the data transformation task?
Thanks!
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Nov 30, 2006
Hi,
Is it possible using derived column transform to change all blank values in a flat file to say a "0"
Basically convert "" to "0"
Thanks for any help,
Slash.
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Jun 11, 2007
Sorry if this question had already been answered previously. I was unable search the forum on this topic. How will I merge these and then configure the first row as Column names (As this helps to map to the destination column names automatically)
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May 12, 2006
Hello All,
I have come across this issue with the Flat File Source when the delimiter is set to a comma.
"""KAILUA KONA,HI""","CA",
In the data snippet above and with the setting of using a comma as a column delimiter
and a " as the text qualifer.
the data will be parsed in this fashion:
"""KAILUA as a column:
HI""" as a column
CA as column
when it should be
"KAILUA,HI" as a column
CA as column.
Is there a way to let the Flat File Source to let it know not to parse the data in multiple quotes ?
Thank you
Eric Flores
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Dec 10, 2007
Hi Friend,
I am stuck with a problem and need your help. As we know, all columns that go to error flow of flat file source connection are displayed as a single column e.g. FlatFileSourceErrorOutputColumn, but my requirement is to extract the first column value from this FlatFileSourceErrorOutputColumn, my data is dilimeted by "|" pipe operator. I have created a script component to deal with this. However if we take FlatFileSourceErrorOutputColumn column as input column in script component, it comes as BLOB data. I wrote below code in transformation script component to extract BLOB data from column in string form and then do a Left function search to take first column out.
When I am running this script component I am getting '??????????' question marks as a result in Row.Pname.
Can anyone please help me understand if I am doing anything wrong in this script or suggest a better way to take the data out?
I appreciate your help.
Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer)
'
'
Dim Error_Data As String
Dim Column_1 As String
Dim Len As Integer
Dim Buffer As Byte()
Buffer = Row.FlatFileSourceErrorOutputColumn.GetBlobData(0, CInt(Row.FlatFileSourceErrorOutputColumn.Length))
Error_Data = System.Text.Encoding.Unicode.GetString(Buffer)
Len = Error_Data.IndexOf("|")
Column_1 = Left(Error_Data, Len - 1)
Row.Pname = Column_1
End Sub
Thanks,
Kul
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Sep 14, 2007
how do I make the output columns padded with extra space ? I intentionally set my output width larger than the input width, but the generated file is still jamming all the columns next to each other
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Apr 18, 2007
Hi
SSIS is brand new for me.. Playing with since a few hours..
Iam trying to import a Flat File into the SQLSERV DB using SSIS..
One of the column is in this format -- "YYYYMMDDHH24MISS"
How do i get around this to import the data in a readable fashion into the Destination?
Thanks!
MKR
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Nov 10, 2006
Hi all,
I m using SSIS and i am transfering the data from Flat File Source to the OLE DB destination File. The source file contain some corrupt data which i am transfering to the other Flat file destination file.
Debugging is succesful but i am not getting any error output in the Flat file destination file.
i had done exactly which is written in the msdn tutorial of SSIS.
Plz tell me why i am not getting the error output in the destination flat file?
thanx
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Jun 14, 2007
I have the misfortune of converting a DTS package to SSIS that loads a flat file that has a text fields that can contain embedded text delimiters ("), column delimiters (,) and even new lines (CR+LF i.e.,hex 0D 0A) in it. A sample line from the file is posted here, remember this is just one line though it shows as three lines, since the third field has embedded new line in it:
4,"Sam","EVP; MARKETING PRODUCT MANAGER ""Level I"",
Internet Sales / HELP
8005551212",100
If you open in excel it handles it perfectly showing four fields, as below, and this is what I want ( I cannot get it aligned right in the posting, just save the above line in *.csv and open to see what it should be):
4 Sam "EVP; MARKETING PRODUCT MANAGER ""Level I"", 100
Internet Sales / HELP
8005551212"
Now, SSIS errors on the embedded text delimiters and breaks into two or three lines based on which option I chose. I have tried few options based on postings in the forum:
a). Using undouble and undoubleout: Does not work when there are embedded column delimiters (,) in the text field
b). Modified undouble script posted by lvovg at http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=1718225&SiteID=1. Handles the embedded column delimiters (,) perfectly, but the embedded new lines (CR+LF i.e.,hex 0D 0A) are breaking it.
Since, I am using the ragged right format to read from the file then use transform script on the line by lvovg, the line is already broken by the ragged right format at the embedded new lines, hence does not work.
Right now I am stuck. Can someone please help (anyone from MS) ? I am already baffled at the amount of coding required to convert a very basic ( and working ) flat file load DTS package to SSIS. I am willing to persist bit longer to convert this to SSIS, before I give up and stick with DTS and wait for a fix / workaround.
Thanks.
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Mar 13, 2008
Hello guys,
here is my issue.
I created a ssis package which exports the data from oledb source to flat file (csv format). For this i have OLEDB source and Flat File as destination. I generate the file and filename dynamically with the column names in the first row. So if the dynamically generated file name already exists , then i want to append the data in the same existing file. But I dont want to append the column names again. I just want to append the rows to the existing rows.
so lets say first time i generate a file called File1_3132008.csv.
Col1, Col2
1,2
3,4
After some days if my ssis package generates the same file name i.e. File1_3132008.csv, this time i just want to append the rows to the existing file. So the file should look like this-
Col1, Col21,23,45,67,8
But instead my file looks like this if i set Overwrite propery to false
Col1,Col2
1,2
3,4
Col1,Col2
5,6
7,8
Can anyone help me to get the file as shown in the highlighed
Any help would be appreciated .
Thanks
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Apr 24, 2008
How do i import a Varying Column Width Flat file into a Table using SSIS?
I have a flat file that has 4 columns with varying width
Like I should read the file as
Col 1 - (1 to 10 Characters)
Col 2 - (12 to 21 Characters)
Col 3 - (22 to 35 Characters)
Col 4 - (36 to 38 Characters)
At the end of the record is a "LF"
I think "Fixed Width" Columns allow me to define a standard column length for all the columns.. Right?
Any thoughts on how to?
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Apr 19, 2007
Hi all,
I am passing flat file source as a variable to Dtexec Utility. (like package.variables[User::varFileName].Value;"D:sourcedata.txt).
Destination table is having one more column.
I want to add custom value in that column at run time by parameter to Dtexec(User::varDate)
I dont know how to do it, please help me.
Madhukar
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Jul 16, 2015
Public Class ScriptMain
Inherits UserComponent
Dim smpid As String
Dim Prdt As String
Dim rcnt As Int64
[code]...
Using the Vb script above I am expecting to read the first row from a flat file source and transferring the data into two variable using script component.
SQL server 2008.
Script task Custom Properties:
Script Task Input Columns:
I get the following errors one after the other:"The collection of variables locked for read and write access is not available outside of PostExecute." "Object reference not set to an instance of an object."
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Apr 18, 2007
We are importing Flat file data from our Mainframe system. We have a lot of money amounts coming in, but the mainframe does not store the decimals in the flat file. So for example a row in the file might look like this:
+0000007894-0000000563
Where the first value is $78.94 and the second value is -$5.63
Is there anyway to have the Flat file connection manager put in the decimal place for me, or do i have to create derived columns for each column and divide it by 100? There like 50-100 columns per file, so i'm looking for a better, quicker way.
Thanks in advance.
John
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Jan 12, 2007
I'm having a problem using the Flat File Source while using the underlying .Net classes to execute SSIS Packages. The issue is that for some reason when I load a flat file it Empty's out columns randomly. Its happening in the Flat File Source Task. By random I mean that most of the times all the data gets loaded but sometimes it doesnt and it empty's out column data. Interestingly enough this is random and even the emptying out of columns isnt a complete empty, its more like a 90% emtpying. Now you'll ask that is the file different everytime and the answer is NO. Its the same file everytime. If I run the same file everytime for 10 times it would empty out various columns maybe 1 of those times. This doesnt seem to be a problem while working with dtexec or the Package Executor utility. Need Help!!
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Sep 8, 2006
Hi,
I have a simple enough task to complete that I can€™t seem to find the answer to.
The task is this €“
Select table x from the database and write it to a flat file complete with that tables column headings.
Now I€™ve managed to set up an ole db datasource and selected the table and I€™ve also linked it to the flat file output. So now I can generate a flat file from the database. However no column headings appear in the flat file.
I can€™t seem to find anywhere (like a checkbox) that will also output the column headings to the flat file.
Now I can add in Headings manually in the properties of the Flat File Destination object but the columns that appear in the flat file don€™t appear to be in the order that I requested them in the SQL.
So the question is how do I automatically have the column headings appear for flat file output (ideally without me having to manually add them in).
If it can€™t be done and I have to use a vb.net script instead then would anyone have an example script of how to do it?
Thanks in advance for anyone who manages to answer this.
Matt.
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Mar 18, 2015
Can we bulk insert only the desired column from a flat file to a table?
I am using SSIS to bulk insert from a file with more than 200 columns. I am trying to find a way I can bulk insert them to multiples table through SSIS.
The one way I can think is pre map the columns from the file to the destination tables. Build numerous Bulk Insert tasks to achieve that. But not sure if SSIS will let me do that.
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