How to get unmatched data between two sources in SSIS Data Flow?

Question

I have two data sources, one sql table, one flat file (csv). Both sources have exact same columns. Example Data:

Table:

HCN  Name  Surname   DOB
111          


        

Answer 1

SOLUTION 1 : LOOKUP:
You can follows theses steps:

• add a lookup transformation
  in connection tab, choose your flatfile connexion
  in column tab, drag and drop the Join column in general tab, handle not matching entries by redirect rows
• Redirect the non matching output to your destination

SOLUTION 2 : LEFT ANTI JOIN

You can follows theses steps:

1 Sort datasets / or modifiy the properties of the source to isSorted = true

2 Use a LEFT JOIN on the key, and add a new column containing the id of the right side

3 Add a conditional split condition on right side ID is null

Then redirect CASE 1 splited data to your destination, you have only rows from the left side without right side correspondance