db2 范围分区表常用命令

范围分区不同的建表方式

CREATE TABLE LINEITEM

( l_orderkey DECIMAL(10,0) NOT NULL,

l_partkey INTEGER,

l_suppkey INTEGER,

l_linenumber INTEGER,

l_quantity DECIMAL(12,2),

l_extendedprice DECIMAL(12,2),

l_discount DECIMAL(12,2),

l_tax DECIMAL(12,2),

l_returnflag CHAR(1),

l_linestatus CHAR(1),

l_shipdate DATE,

l_commitdate DATE,

l_receiptdate DATE,

l_shipinstruct CHAR(25),

l_shipmode CHAR(10),

l_comment VARCHAR(44))

PARTITION BY RANGE(l_shipdate)

( STARTING '1/1/1992' ENDING '30/06/1992',

STARTING '1/7/1992' ENDING '31/12/1992',

STARTING '1/1/1993' ENDING '30/6/1993',

STARTING '1/7/1993' ENDING '31/12/1993') --不指定边界

PARTITION BY RANGE(l_shipdate)

( STARTING MINVALUE,

STARTING '1/1/1992' ENDING '30/06/1992',

STARTING '1/7/1992' ENDING '31/12/1992',

STARTING '1/1/1993' ENDING '30/6/1993',

STARTING '1/7/1993' ENDING '31/12/1993',

ENDING MAXVALUE) --指定边界

PARTITION BY RANGE(l_shipdate)

(STARTING MINVALUE,

STARTING '1/1/1992' ENDING '31/12/1998'

EVERY 1 MONTH,

ENDING MAXVALUE); --默认连续创建分区

PARTITION BY RANGE(l_shipdate)

( PART JAN1992 STARTING '1/1/1992' ENDING '30/6/1992' IN DMS_D1,

PART JULY1992 STARTING '1/7/1992' ENDING '31/12/1992' IN DMS_D2,

PART JAN 1993 STARTING '1/1/1993' ENDING '30/6/1993' IN DMS_D3,

PART JULY1993 STARTING '1/7/1993' ENDING '31/12/1993' IN DMS_D4); --指定表空间，并对各分区命名

db2 describe data partitions for table LINEITEM --查看结构

db2 describe data partitions for table LINEITEM show detail --查看详细结构

db2 “select datapartitionnum(l_shipdate) as PartitionId, l_shipdate from lineitem

where l_shipdate between '01/06/1992' and '31/07/1992'

order by l_shipdate” --查看数据分布

db2 “create index I_LINEITEM on LINEITEM(L_SHIPDATE) in DMS_I1” --建立索引

参考文档 http://www.ibm.com/developerworks/cn/education/data/dm0612read/section4.html#ibm-pcon