-
+
Data Definition
parent. Similarly an inheritance link can be removed from a child using the
ALTER TABLE using the NO INHERIT
subform.
+
One convenient way to create a compatible table to be a new child is using
caveat below regarding constraints). Alternatively a compatible table can
be created by first creating a new child using CREATE
TABLE then removing the inheritance link with ALTER
- TABLE.
+ TABLE.
+
A parent table cannot be dropped while any
be accessed for a query. Whereas the alternative, adding those columns
to every index, increases space usage which can erase any
performance gain.
+ </para>
When most of the heavily accessed area of the table is in a single