References to them persist in system catalogs. Otherwise, dropping a column would require rewriting every row in the table. -- Scott Ribe scott_ribe@xxxxxxxxxxxxxxxx https://www.linkedin.com/in/scottribe/ > On Jun 6, 2018, at 12:43 PM, Wells Oliver <wells.oliver@xxxxxxxxx> wrote: > > Just curious then, in what meaningful way do dropped columns persist, what are the reasons? >
