You may need to recreate a data table to:
Change a default PI to a defined PI for a nonempty table.
Add or remove a PI for a nonempty table.
Change the PI to a different PI for a nonempty table.
Change a NUPI to a UPI in a populated table when there is no USI (however, usually
you would just create the USI on the table, and then alter it).
Redefine the partitioning of a populated table. In some cases, you can still use ALTER
TABLE; see “ALTER TABLE” in SQL Data Definition Language.
Change a data type attribute that affects existing data. For rules on changing data
types, see “ALTER TABLE” in SQL Data Definition Language.
Define or delete COMPRESS storage attributes for an existing column.
Add columns that would otherwise exceed the maximum for the number of columns defined
during the life of a table.
Move the table to another database or user.
Change the groupings of columns into column partitions.
Note: It is best practice to access a table via a view, especially for tables used by multiple
Use the SHOW TABLE or SHOW IN XML TABLE request to display the current table definition,
which you can then modify and submit.