Re: change column name in sql?

On 14 May 2013 22:26, Birgitta Hauser wrote:

There is no way to alter a column name, neither the long SQL nor the
short system name.
What you can do is to add a new column with the desired name, data
type and length. (If there are already data within the old column
copy these data into the new column). And delete the old column
after.

Only if the short name and the alias name are *both* incorrect.

A bit more complicated than just that for the scenario presented, wherein one of the two names [short and alias] is correct, but the other is incorrect. In that case, the "new column" can not be added, because one of the two names for the new\corrected column would be a duplicate of the correct name in the "old column". Introducing an additional set of add\drop column ALTER requests using something like "add column bogus_alias_name for bogus_name" would be required... and of course the additional corresponding UPDATE if data were present. All the more reason to just DROP TABLE and re-create might be better... separately dealing with dependencies, data, ownership, and authority issues required for that action.