This topic describes how to create a KEY-RANGE partitioned table.
Syntax
The following statement is used to create one or more KEY-RANGE partitioned tables where each partition may contain one or more subpartitions:
CREATE TABLE [ schema. ]table_name
table_definition
PARTITION BY [LINEAR] KEY (column_list)
SUBPARTITION BY RANGE (expr)
(partition_definition [, partition_definition] ...)partition_definition is:
PARTITION partition_name
(subpartition_definition [, subpartition_definition] ...)subpartition_definition is:
SUBPARTITION subpartition_name
VALUES LESS THAN {value| MAXVALUE}Parameters
Parameter | Description |
table_name | The name of the table. |
expr | The expression of the partition. It must be of the INT type. The string type is not supported. |
column_list | The list of partitions. It is used in RANGE COLUMNS(). Expressions are not supported. |
value | The boundary value of the partition. |
MAXVALUE | The maximum value in the partition. |
partition_name | The name of the partition. The name must be unique within the table. |
subpartition_name | The name of the subpartition. The name must be unique within the table. |
Examples
Create a KEY-RANGE partitioned table.
CREATE TABLE sales_key_range
(
dept_no varchar(20),
part_no INT,
country varchar(20),
date DATE,
amount INT
)
PARTITION BY KEY(dept_no)
SUBPARTITION BY RANGE(amount)
(
PARTITION p0(
SUBPARTITION p0s0 VALUES LESS THAN(10000),
SUBPARTITION p0s1 VALUES LESS THAN(20000),
SUBPARTITION p0s2 VALUES LESS THAN(30000),
SUBPARTITION p0s3 VALUES LESS THAN(MAXVALUE)
),
PARTITION p1(
SUBPARTITION p1s0 VALUES LESS THAN(10000),
SUBPARTITION p1s1 VALUES LESS THAN(20000),
SUBPARTITION p1s2 VALUES LESS THAN(30000),
SUBPARTITION p1s3 VALUES LESS THAN(MAXVALUE)
),
PARTITION p2(
SUBPARTITION p2s0 VALUES LESS THAN(10000),
SUBPARTITION p2s1 VALUES LESS THAN(20000),
SUBPARTITION p2s2 VALUES LESS THAN(30000),
SUBPARTITION p2s3 VALUES LESS THAN(MAXVALUE)
)
);