The ALTER TABLE options are a Teradata extension to ANSI SQL. You can list the options in any order.
You must specify at least one table option or one column option for a basic ALTER TABLE request.
You can alter table options, column options, or both. If you alter both, you must alter table options, then column options.
You cannot modify basic table parameters and revalidate a table or join index in the same ALTER TABLE request.
For the Object File System, the following have default values that you cannot change:
- BLOCKCOMPRESSION
- CHECKSUM
- DATABLOCKSIZE
- FREESPACE
- MERGEBLOCKRATIO