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How do I add a Subpartition to an existing partition in Oracle?
You use the MODIFY PARTITION ADD SUBPARTITION clause of the ALTER TABLE statement to add a list subpartition to a [range | list | interval]-list partitioned table. For an interval-list partitioned table, you can only add subpartitions to range or interval partitions that have been materialized.
How do I change a Subpartition in Oracle?
If you want to change the subpartition template you can do: ALTER TABLE INT_TMP SET SUBPARTITION TEMPLATE ( SUBPARTITION “SP_SO” VALUES ( ‘SO’ ), SUBPARTITION “SP_UK” VALUES ( ‘UK’ ), SUBPARTITION “SP_US” VALUES ( ‘US’ ), SUBPARTITION “SP_OTHERS” VALUES ( DEFAULT ) ) / Table INT_TMP altered.
How do you create a Subpartition?
CREATE TABLE ts (id INT, purchased DATE) ENGINE = MYISAM PARTITION BY RANGE( YEAR(purchased) ) SUBPARTITION BY HASH( TO_DAYS(purchased) ) ( PARTITION p0 VALUES LESS THAN (1990) ( SUBPARTITION s0 DATA DIRECTORY = ‘/disk0/data’ INDEX DIRECTORY = ‘/disk0/idx’, SUBPARTITION s1 DATA DIRECTORY = ‘/disk1/data’ INDEX DIRECTORY …
How do you create a partition and Subpartition?
To create a composite partitioned table, you start by using the PARTITION BY [ RANGE | LIST ] clause of a CREATE TABLE statement. Next, you specify a SUBPARTITION BY [RANGE | LIST | HASH] clause that follows similar syntax and rules as the PARTITION BY [RANGE | LIST | HASH] clause.
What is partition and Subpartition?
Partitioning and subpartitioning of tables and indexes is a technique for creating a single logical entity, a table or index, mapping multiple separate segments allowing the optimizer to access a smaller number of blocks to respond to a SQL statement.
Can I rename partitions?
It is possible to rename partitions and subpartitions of both tables and indexes. One reason for renaming a partition might be to assign a meaningful name, as opposed to a default system name that was assigned to the partition in another maintenance operation.
What is Oracle Subpartition template?
A subpartition template simplifies the specification of subpartitions by not requiring that a subpartition descriptor be specified for every partition in the table. Instead, you describe subpartitions only one time in a template, then apply that subpartition template to every partition in the table.
Can a subpartition be added to an existing partition?
ADD SUBPARTITION command adds a subpartition to an existing partition; the partition must already be subpartitioned. There is no upper limit to the number of defined subpartitions. New subpartitions must be of the same type (LIST, RANGE or HASH) as existing subpartitions.
How to add a subpartition to an ALTER TABLE?
ADD SUBPARTITION. The ALTER TABLE…. ADD SUBPARTITION command adds a subpartition to an existing subpartitioned partition. The syntax is: ALTER TABLE table_name MODIFY PARTITION partition_name. ADD SUBPARTITION subpartition_definition; Where subpartition_definition is: { list_subpartition | range_subpartition}.
How to add values to a list subpartition?
This operation is essentially the same as described for ” About Modifying List Partitions: Adding Values “, however, you use a MODIFY SUBPARTITION clause instead of the MODIFY PARTITION clause. For example, to extend the range of literal values in the value list for subpartition q1_1999_southeast, use the following statement:
How to add a subpartition to a sales table?
The following example adds a LIST subpartition to the RANGE partitioned sales table. The sales table was created with the command: After executing the above command, the sales table will have two partitions, named first_half_2012 and second_half_2012.