Azure Data Factory compare and copy missing rows

Question

I've got 2 tables, and I want to copy only the new rows from table A to table B.

So far I've declared two sources:

• Table A on sqlserver1
• Table B on sqlserver2

Now I'm at a loss about how to say only take those rows that are missing in tableB. I've got a compound key. In T-SQL, I'd just use a left join with multiple on statements.

Answer 1

1. if you want copy data from table a to table with only new rows from table a. you must create data flow like this. I assume that table a is table source and table b is sink (table destination)

2. you can add lookup activity as below: for example "PLANT" is unique value from table A or Id_column

3. you can add lookup activity like this: add column "flag" is using to flag from that Id do you have

4. the last is using conditional split like this:

5. the last, is you can using sink to Table B...

I hope my explain can help your problem. I'm sory if my english is bad...