energumen@buaa.edu.cn wrote:
> I know in mysql, index will auto change after copying data
> Of course, index will change after inserting a line in postgresql, but what about copying data?
The index will (of course) know about the new data.
You might want to ANALYZE the table again after a large copy in case the
statistics about how many different values are present changes.
--
Richard Huxton
Archonet Ltd