How to compare SSIS Variable and Column In the table!!.

Question

Hi Folks,
My Requirement IS :
1^strun: if the record does not exist
in the table insert the record (file_name, last_modified_file_date) and create a copy in the archive folder with file_name_currentdate.csv
 Daily run:
retrieve the last_modified_file_date from the input file and check if the retrieved date is greater than the last_modified_file_date in the table:
If true:
create a copy of the input file in the archive folder and update the last_modified_file_date in the table with the retrieved date
If false don’t do nothing because the file has been archived in one of the previous runs.
I have already retrieving the modified date and File Nae iserting into Filename Table: (That table has 2 columns which are FileName and FileDate) so In script task everytime the variable getting Modified date(retrieve the last_modified_file_date
from the input file) could yu please give me idea after that how I can Compre the existing table record and variable. I have already
imported the all Filenames and Modified into table like below.
Could you please give your ideas friends.

Answer 1

Try this:
       1) Execute SQL Task (In the Parameter mapping, pass filename and fileLastModified date retrieved from the file - your SSIS Variable)
       2) In the ‘SQL statement’, Write a TSQL like this:
--declare these variables before the use
SET @filename=?
SET @fileLastModifieddate=?
--declare @MaxLastTblDate and @flag=0
select @MaxLastTblDate = Max(last_modified_file_date) from Table T1
If (@fileLastModifieddate>@MaxLastTblDate)
--Do your insert here
--Update the variable with @flag (say 1)
3) Set the value of @flag in the Result set of Execute SQL (another SSIS variable)
4) In the next control flow component, do the file archiving.
5) Between these two components, check the value of the @flag variable in the precedence constraints (whether to copy the file for archiving or not)
Hope this helps.