Combining package configuration and Execute SQL task at run time

Question

Hi everyone,
I have an issue regarding setting values at run time
I use package configuration to manage different enviroments scenarios (DEV, PROD):
XML file to store the connections string of SSISConfigDB
and the actual values of parameters in that SSISConfig DB tables Filtered by ConfigurationFilter column
Now, one of my packages needs in addition setting at run time value of a flat file name
i used an Execute SQL task - within the task i read into a variable the file name using command line
then, the full path of Flat File Connection is set by expression concatenating the root folder and the variable
the problem is that the variable stays empy! as if the Execute SQL task was never executed!
 Am i doing something incorrect? in the package configuration wizard the configured value are only XML file and the connection string of the DB.
to summerize - how can i combine package configuration, default value, Execute SQL task and expression at runtime?

Answer 1

1.EvaluateasExpression=TRUE (Full Path variable)
2. Do you mean to invlole a ISNULL() function in the expression? if so, no
3. Of course i recieve a valid value
4. The Full path expression is evaluated to the root folder - without the portion of the file name
here is the syntax in Execute SQL Task:
  truncate table OnErrorFlagTable
  Declare @Path varchar(128)
  Declare @FileName varchar(128) 
  Declare @SenderID varchar(5)
  Declare @INST_COD varchar(5)
  Declare @Flag int = 0
 Declare @FileType varchar(2)='01'
  Truncate table TraumaRecords
Select @Path = 'C:\RootFolder\'
 --***Insert into Temp table the file so we can take his name***--
Create Table #Tmp(Txt Varchar(Max))
Insert Into #Tmp(Txt)
Exec master..xp_cmdshell 'Dir *.txt C:\RootFolder\/b'
select top 1 @Filename = Txt From #Tmp
Where ISNUMERIC(substring(Txt,1,1))=1
order by Txt desc
Insert into OnErrorFlagTable
Select 2,@FileName
Select @FileName as TraumaFileName,@FileType as FileType
Then, in ResultSet TraumaFileName and FileType are mapped
Expression of @TraumaFlatfileFullPath is
@[User::TraumaFlatfilePath]+ @[User::TraumaFlatFileName]
where the variable @[User::TraumaFlatfilePath] is evaluated in variable window (default value)
and it's value is C:\RootFolder\
and @[User::TraumaFlatFileName] is the ResultSet of the ExecuteSQLTask
and for some reason when executed in SSIS return null while in SSMS return the expected value
Can you try making this into a procedure with required parameters and call it from SQL task to see if you get return value correctly? Use OUTPUT parameters for getting back required values
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