Hi All,
I`m using CHECKSUM in SSIS for Delta Processing. Please suggest me if any issues with CHECKSUM for the following implementation process.
Requirement: develop a package to Load data from one sql server instance table to another instance table. when the package runs for second time, it should only load the new trecords and updates the destination if any existing records modified in source.
My solution:
step 1: I`m adding one column in destination table which will be filled up with CHECKSUM(*) from source table. i'm comparing this checksum value with source every time package runs to identify the new records and updated records from source.
step 2: Delete the records from destination if any records modified at source
step 3: Apply the LEFT JOIN on Source to destination and inserting the records from source to destination.
version: SQL SERVER 2008 R2 ,2008 BIDS
Please suggest me is there any performance issues/functionality issues.