Only Create Destination Flat File When There Are Rows Returned From Ole DB Source

Oct 25, 2007

Hi,

I have a data task with the following requirements:
1) Run query against database to retrieve rows
2) Add header and footer row to the result set. The footer row must contain a count of the records.
3) Write the rows to a fixed width file if there were any data rows

I have got to the point that I can create the file (using a set of tasks that includes derived columns, sorts, aggregation and merges). However the file is created regardless of whether there were data rows returned.
I can't check the row count before proceeding as this isn't set until the data task ends. And if I try to split them into separate data tasks (so that I can access this variable and perform conditional execution) it becomes harder to access the original rows.

Do you have any recommendations on the best way to achieve this?
It all seems to be very complex and I'm starting to feel that it would be easier to do this outside of SSIS...
Please help me to keep the faith!

For those interested this is a slightly simplified version of what I have so far (all within a single data task):

1.Run dummy sql to create header row 2.Run main SQL to retrieve rows
| |
| 3.Multicast
| | |
| | 4.Create footer row by doing sum() in aggregate task
| | |
| 5.Merge body and footer
| |
6. Merge header with body and footer
|

7. Create fixed width file

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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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I am bring a date from a OLE DB Source (SQL Command) as [select cast(convert(varchar,getdate(),101) as varchar(10))] to a Flat File Destination (CSV File). The data in the source is show as "1/1/2007", which is how I need it to display in the file. The flat file defaults to showing the data as "1/1/2007 00:00:00." I did change the destination field to a String, and still, I geting the timestamp. I tried using a data conversion transformation, and I am getting bargage data when converting the date to a string.

Can any one give me insight on how to populate a date into a comma delimeted file as "1/1/2007", not "1/1/2007 00:00:00."


Thanks in advanced.

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Nov 12, 2007

Good day everyone,

I have implemented a simple package that has only a Data Flow Task in the Control Flow. The corresponding Data Flow Components are as follows (in the correct order):

1. A Flat File Source adpater which parses a file containing circa 1 million rows.
2. A Script Component that generates IDs for two of my destination tables.
3. A Mulicast Component that distributes all the columns retrieved from the source file as well as the 2 generated keys.
4. Four OLE DB Destination adapters where I insert the data from the different columns together with the generated keys as primary or foreign keys respectively.

My questions are mainly about how the "Flat File Source" and "OLE DB Destination" work behind the scenes.

Questions:
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Does the "Flat File Source" adapter load all the rows from the source file into the memory and then start pushing the rows one by one into the data flow?
My concern is actually about the huge sizes of my import files, which might eat up the memory.
Or does the "Flat File Source" adapter load a certain number of rows, pushes them into the pipeline and then fetches the next batch based on a certain configuration?

B. "OLE DB Destination":
I have set the four OLE DB destinations to "Fast Load" with a commit size of 5,000.
Can I ever run into the problem of having for instance 10,000 records inserted in Table1, but only 5,000 inserted in Table2. The error case I am thinking about is as follows:
After the second commit on Table1, an erroneous record occurs during the insertion in Table2. Thus, the second commit for Table2 gets rolled back and the whole package fails.
In this case, I get an inconsistent state in my database.
In other words, how can I synchronize the commit operation in all my destination tables, s.t. they either all commit the same batch or all do not commit it?

Thank you in advance for your support.

Regards,
Samar

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Hi all,



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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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Apr 17, 2008

Hello friends,

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4. Case Error -> Writes to Error Flat File (with timestamp in the title)

Most job runs have no errors but the error file is created as a zero byte file anyway. If there are no error records I don't want the error file created. How might I accomplish this?


Thanks

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Hi all,

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Thanks a lot,

Grace

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any help is appreciated. thanks.



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Jan 14, 2008



All,
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bakerz

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Feb 23, 2008



Hello Guys,

I am working in one company and currently I am assigned to new project for Data Migration from company X to our company Y using SSIS. I am totally new and i just completed 5 tutorial which was gien on MSDN website.

Basically client is going to send us first flat file with 1 million records with Header, Detail and Trailer records.
I want to create a Package in such a way that it dumps all this first load into 7 to 8 different tables at a time.
we also have to include functionlity for validation and error check.
On successfull load error file should only return Header and Trailer but no detail records.
If there are any errors then error file should contain Header, Detail records which were unable to load plus trailer which we have to sent back to client.

When 2nd file comes that time we have to check whether this is new records or change (update) one depending on Flag which tells it.


This is basically high level idea of my Package what i need to create. If u guys have any question then let me know.

I know you guys are very experienced one. Anyone of you please give me some detail idea on it I would really appricate it.
I have very limited time line for it.

Thanks

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Hi,

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Did someone else faced this issue?


Thanks,
AQ

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Jun 22, 2006

I have a Rounding error: Between flat file connection manager Source & OLE DB Connection Destination (SQL Server 2005) in my Dataflow.

File looks like this lets call column names Col A,B,C,D

70410000 RD1 1223631.92 196042.42
70329000 ICD 11025.84 3353.88
71167300 COL 104270.59 24676.96

flat file connection manager settings: first row Column names then Advanced tab Col A float , Col B float , Col C string ,Col D float ,

OLE DB Connection Destination (SQL Server 2005)

CREATE TABLE [dbo].[PT_CUST_ABR](

[PARTY_NO] [float] NULL,

[PARTY_NAME] [varchar](75) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,

[TELECOMABR] [float] NULL,

[GENIABR] [float] NULL,



Problem: ColA (Source) Rounding error to PARTY_NO (Destination)
I have a field of text of in a flat file that the flat file connection manager Source picks up correctly 70000893?
However when it gets the OLE DB Connection Destination the data has changed to 70000896. Thats before its even Written to the database.
The only clue that something is wrong in the middle is the great Data viewer shows the number as 7.000009E+07
Other clues looking at the data it appears there is a rounding error on only the number that dont end in 00
ColA (Source) PARTY_NO (Destination)
71167300 71167296
70329000 70329000
70410000 70410000
Any ideas people?
Thanks in advance
Dave



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     AuditID      INT IDENTITY(1, 1) NOT NULL,
     PackageName     VARCHAR(100) NULL,
  
FileName           VARCHAR(100) NULL,
     LoadTime        DATETIME NULL,
     NumberofRecords INT NULL
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Execute SQL Task

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1           MMM       NULL                      12
2          MMM  NULL                23
3          MMM  NULL      14
4          MMM  NULL              1                     

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Hi,

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===================================

The component could not be added to the Data Flow task.
Could not initialize the component. There is a potential problem in the ProvideComponentProperties method. (Microsoft Visual Studio)

===================================

Error at Extract Test Flat File [DTS.Pipeline]: The module containing "component "" (245)" cannot be located, even though it is registered.



===================================

Exception from HRESULT: 0xC0048021 (Microsoft.SqlServer.DTSPipelineWrap)

------------------------------
Program Location:

at Microsoft.SqlServer.Dts.Pipeline.Wrapper.CManagedComponentWrapperClass.ProvideComponentProperties()
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~~~~~~~~~~~~~~~~~~
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~~~~~~~~~~~~~~~~~~~

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