问题
I have a simple ssis package (2005) which reads a fixed width flat file source and dumps into a table. File so far had 5 columns, last column being 50 length. Now the format changed, a new column is added(length 4)at the end and previous 50 length column is only 10 length now.
I figured it should be very simple, just go to advanced editor of the source under data flow, and under external columns, modify Column4 (my columns are named Column0 through 4) and change its length to 10, then 'add column' and name it Column5 etc. But when I add, new Column always gets added above the current last column (Column4).
How do I get to add a new column in the end without having to redo the whole Columns.
(Note: I oversimplified my case, my number of columns is really big and I would hate to have to do the whole mapping all over again... Please help!)
来源：https://stackoverflow.com/questions/14523098/add-extra-external-column-to-flat-file-source