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场景： 遇到1亿数据量的数据需要根据用户名做些数据统计分析，想直接做些聚合计算基本没可能，于是打算先根据日期按照年月创建分区，然后对各个分区分别进行统计，最后汇总结果。
操作方式，新建分区表，然后用ETL工具抽取源并写入新表。
create table TEMP_TEST ( log_id NUMBER(20), user_id NUMBER(20), user_name NVARCHAR2(200), money NUMBER(30,8), history_total NUMBER(30,8), order_id NVARCHAR2(100), money_type_id NUMBER(20), reason_id NUMBER(20), operation_user_name NVARCHAR2(200), operation_user_ip NVARCHAR2(100), remark NVARCHAR2(200), osn NVARCHAR2(100), isn NVARCHAR2(100), return_sn NVARCHAR2(100), repeate_flag NUMBER(3), create_date DATE, modify_date DATE, status NUMBER(20), batch_id NUMBER(38) ) nologging partition by range (create_date) ( partition create_date1500 values less than (TO_DATE(‘2015-01-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1501 values less than (TO_DATE(‘2015-02-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1502 values less than (TO_DATE(‘2015-03-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1503 values less than (TO_DATE(‘2015-04-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1504 values less than (TO_DATE(‘2015-05-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1505 values less than (TO_DATE(‘2015-06-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1506 values less than (TO_DATE(‘2015-07-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1507 values less than (TO_DATE(‘2015-08-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1508 values less than (TO_DATE(‘2015-09-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1509 values less than (TO_DATE(‘2015-10-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1510 values less than (TO_DATE(‘2015-11-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1511 values less than (TO_DATE(‘2015-12-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1512 values less than (TO_DATE(‘2016-01-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1601 values less than (TO_DATE(‘2016-02-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1602 values less than (TO_DATE(‘2016-03-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1603 values less than (TO_DATE(‘2016-04-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1604 values less than (TO_DATE(‘2016-05-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1605 values less than (TO_DATE(‘2016-06-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1606 values less than (TO_DATE(‘2016-07-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1607 values less than (TO_DATE(‘2016-08-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1608 values less than (TO_DATE(‘2016-09-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1609 values less than (TO_DATE(‘2016-10-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1610 values less than (TO_DATE(‘2016-11-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1611 values less than (TO_DATE(‘2016-12-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS, partition create_date1612 values less than (TO_DATE(‘2017-01-01 00:00:00‘,‘yyyy-mm-dd hh24:mi:ss‘)) tablespace DW_STG_TBS )
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原文地址：http://www.cnblogs.com/30go/p/5879307.html
