Hi, In the next project I'm going to have a number of colums in my tables, but I don't know how many, they change. They all use integers as datatype though.. One day, I get 2 new columns, a week later I loose one column, and so on in a random pattern.
I will most likely have a few million rows of data so I just wonder if there are any problems with running alter table x add column ..... or alter table x drop column ..... Adding a column, will it place data "far away" on the disc so that select * from x where id=y will result in not quite optimal performance since it has to fetch columns from a lot of different places? Will deleting a column result in a lot of empty space that will anoy me later on? Are there any other clever solutions of this problem? -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
