Extract columns to existing table with different primary key column than 'id'?

[shah]

I'm trying to extract columns using --extract-columns "src_col:dest_table:dest_value_col" but in my dest_table the ID is not 'id' but "tablename_id". What's the best way to get around this issue? I noticed this in the CLI code but wasn't sure about the best way to change it to allow a different '(id)':

FOREIGN KEY ("{}") REFERENCES [{}](id)'.format(column, table)