删除并重建分区表上的本地索引

Question

我需要在现有分区表上删除位图索引，并且我想在同一列上创建一个普通的本地索引。我是否需要再次手动创建分区？

Answer 1

无需担心单个分区。 LOCAL索引将自动为每个表分区创建索引分区。

--Create partitioned table with local bitmap index.
create table test1(a number, b number)
partition by range(a)
(
    partition p1 values less than (1),
    partition p2 values less than (2)
);
create bitmap index test1_idx on test1(a) local;

--Drop bitmap index.
drop index test1_idx;

--Create a local, btree index.
create index test1_idx on test1(1) local;

--It automatically exists for every partition.
select partition_name from user_ind_partitions where index_name = 'TEST1_IDX';

PARTITION_NAME
--------------
P1
P2