Anyone know how I can change a SSIS variable at runtime?
I have a variable User:SkipStuff
I want to set this based on a condition during a for loop container
Use Expression Task instead. In the "Expressions" pane, put the variable to set on left, then equates it to the intended value.
#[User::VariableToSet] = some expressions...
You can add a Script task. Add your SSIS variable(s) to the ReadWriteVariables property in the Script Task Editor.
You can reference the variable(s) in your script using the following format: Dts.Variables["MyCaseSensitiveVariableName"].Value
Lots of ways really, but the one I use most frequently is to use an execute SQL task and set the result set to single row and then put the results set into the variable.
Related
Using set variables step in pentaho, I have defined a variable and the scope is set to "valid in the Java virtual machine", but it is not replacing in one of the sql's used in the table input step.
Table input step is checked with option "replace variables in script". But the same variable when I placed in kettle.properties file, it is working. Pentaho job available in the repository and running from Linux box
Could anyone please share your thoughts?
You can-not set the parameter and use it in the same transformation, because it executes all the steps parallelly.
Logic-wise correct approach is first set the variable and get the variable in next transformation and further use or replace in respected steps.
As Working Hard.. says, you can not use a parameter in the same transformation, you have to use another transformation after setting the variables.
I created a string Path="E:\" to assign a value to a variable with Eval. But it returned a run-time error 2766: This object cannot contain 'automatic' object 'Path'.
Is there a way that I can work on variables with string? I have strings of variables and strings of values. This would save me lot of time.
Many thanks
You can't use Eval to set a variable within the expression. If you write it like this:
Path = Calcu.Eval("E:\tables")
you'll get the answer in the Path variable. Obviously, this is the same as
Path = "E:\tables"
but that is a different topic. If you want the variable name to be dynamic as well, then you are probably doing something wrong. If you really want it, the you need to have a look at VBIDE.VBProject, but don't go there until you have a fairly good understanding of VBA.
I have a process task:
I'm wondering whether it's possible to pass something like this into it:
$Package::targetLocation
Thank you for your guidance,.
You should be able to do this with the Expressions tab, create a new expression against the Arguments property and assign this to your user variable.
I have a simple sql query in my Execute sql task in ssis package,
SELECT MAX(binindex)
FROM dbo.myTable
I need to store this maximum index into a variable and then pass it to Script Task and display it,
I already declared a package variable, the package compiles, however it shows -1 every time, I don't know what I'm doing wrong, any help will be appreciated!
public void Main(){
//TODO: Add your code here
Dts.TaskResult = (int)ScriptResults.Success;
MessageBox.Show(Dts.Variables["User::BININDEX"].Value.ToString());
}
The good news, is that you are doing everything correctly as far as I can see. I recreated your package and I get the expected value from my query.
I can also induce your situation - the correct value is returned from my query but my package produces an "incorrect result."
The problem, I hope, is that you have two BININDEX variables defined at different scopes. My original assumption was the Package scoped one contained a value of -1 and you had a variable scoped to the "Execute SQL Task" with the same name. The default behaviour is a variable is created scoped to the object that currently has focus. This changes in the 2012 release of SQL Server by the way.
As your picture shows a design-time value of 123 for the package scoped variable, the possibility also exists that you have a variable defined on the Script Task with the same name of BININDEX. The local variable would override the globally scoped variable
Click on your Script Task and hopefully you'll see a BININDEX defined there like the above. Otherwise, I think the problem is somewhere in your package, you have conflicting BININDEX variables. You can try slogging through the Package Explorer looking for an instance where you have two variables with the same name listed.
I need to leave but if none of that is the case, add a PostExecute breakpoint on the Execute SQL Task and look at your Locals window (not Variables as that only reflects Design-time values). Expand Variables and you should be able to see the value of BININDEX. Is it correct there?
In an SSIS package I have a For..Each container that enumerates all (.) the files in a folder.
In that For..Each container I have a component-level variable 'fileComments' of DataType 'String'.
In that For..Each container I have a script task. With a ReadWrite entry for 'filecomments' (amongst others)
In that script task, I have some code :-
Dim Comments As String = Dts.Variables("User::fileComments").ToString
which allows me to read the value of that variable, but if I try to allocate a value back to that variable, I get a Property 'Item' is 'ReadOnly' blue squiggly underline.
How do I change the vlaue of that variable (or get the value out of the script task so I can use it later in the flow) ?
Thanks in advance.
your problem is a common trap check this article out:
http://www.programmersedge.com/?p=1350
you basically need to use the Dts.VariableDispenser object to lock or declare the variable as read / write in the script task.