posted 1/12/2012 by KeithHyer - Views: [2764]
"jampa.sb" asked a question about moving files around in SSIS using the File System Task and variables in the SSIS forum.
Based on that question, I decided to put together a "Step-By-Step" walk through demonstrating how to do a portion of the issue.
From the question, there are 3 folders and to start, 2 files:
The question ( goal ) is to rename a COPY "a20120111.txt" of the file to "c20120111.txt" which will be placed in the "Folder C".
I'm going to "stage" some test files as shown below and assume that we've gotten this far successfully.
Ok, with those in place, let's look at that final step:
First, I define some variables. They're not dynamic ( expression-based ) yet - just regular fixed string variables.
Next, we will add the expression to the FileNameDate variable to make it "build" today's date at runtime. To do this, highlight the FileNameDate variable as shown above and then go over to the properties window. It should look similar to the ( edge of ) the window pictured below:
For the property for "EvaluateAsExpression" - set this to True. Then click into the "Expression" property just below it. An "..." ellipse button should appear. Click on it, which opens the Expression builder. Put in the expression as shown here:
(DT_STR, 4 , 1252)DATEPART( "year" , GETDATE() ) + "" + RIGHT( "00" + (DT_STR, 2 , 1252)DATEPART( "month" , GETDATE() ) , 2 ) + "" + RIGHT( "00" + (DT_STR, 2 , 1252)DATEPART( "day" , GETDATE() ) , 2 )
Click "Evaluate Expression" to see the value and ensure that the formula is correct.
If everything is working, click "OK" to save the variable's expression.
Now repeat those steps selecting the "DestName" variable - in this example, I have given it the following expression code:
@[User::DestPath] + "c" + @[User::FileNameDate] + ".txt"
Note that I assumed a few thing there - I assumed the file would always have the "c" portion and the ".txt" portions on the filename. If that is not the case, create variables for them - or adjust them accordingly.
Finally, repeat the steps again selecting the "SourceName" variable. I gave that one the following expression code:
@[User::SourcePath] + "a" + @[User::FileNameDate] + ".txt"
Again, I have assumed what the filename will look like for the source file - you may need to adjust it to your needs.
** Make sure you click "Evaluate Expression" after each one as a test. Also of note: SSIS doesn't automatically update a variables value until this is clicked - so if you come back and something is blank - go back in and evaluate the expression to see if it shows up the way you expect it to.
Once you're done, your variable window should now look like the following ( with today's date ):
Now we just configure the File System Task for copying.
From the top down, we set the "IsDestinatinationPathVariable" to True and set the "DestinationVariable" to our "DestName" variable.
Verify that the Operation is set to "Copy file" - this is the default.
Finally set the "IsSourcePathVariable" to True and set the "SourceVariable" to our "SourceName" variable.
Save the package and then it's test time:
The package runs successfully and...
When we check "Folder C" - there is our new file as expected.
Hope that helps!
Keith Hyer