Question

I would like to make a package that would copy data from a table only if table is not empty. I know how to do count and how to make a package for copying data but problem is that Source can’t have any inputs so I don’t know how to do it. Any suggestions?

Answer 1

I don’t understand your comment about dragging a “green line from a package to a source” but instead of trying to determine in advance if the table is empty, just do your copy anyway and then see how many rows were copied:

1. Create a package variable for the rowcount
2. Populate the variable using the rowcount transformation
3. Use an expression in the precedence constraint to check the variable: if it’s greater than zero then continue executing the rest of your package