这篇文章主要讲解了“mysql的普通表怎么转换成分区表”，文中的讲解内容简单清晰，易于学习与理解，下面请大家跟着小编的思路慢慢深入，一起来研究和学习“mysql的普通表怎么转换成分区表”吧！
1) EXPDP\IMPDP
采用逻辑导出导入很简单，首先在源库建立分区表，然后将数据导出，然后导入到新建的分区表即可
2) Insert into
利用原表重建分区表,再insert into 分区表 select * from 原表
3) Exchange Partition(交换分区)
4) DBMS_REDEFINITION(在线重定义)
简单介绍1、2两种的实验过程
普通表数据如下
conn hr/hr
SQL> select * from CUSTOMER99;
CUST_NAME CUST_ID
---------------------------------------- ----------
1 1
11 11
21 21
31 31
41 41
--Insert into的案例
SQL>CREATE TABLE customer199
( cust_name varchar2(20)
, cust_id NUMBER
)
PARTITION BY RANGE (cust_id)
( PARTITION q1t VALUES LESS THAN (10)
, PARTITION q2t VALUES LESS THAN (20)
, PARTITION q3t VALUES LESS THAN (30)
, PARTITION q4t VALUES LESS THAN (40)
, partition q5t VALUES LESS THAN(maxvalue)
);
SQL>insert into customer199 select * from CUSTOMER99;
SQL> select * from customer199 partition(q3t);
CUST_NAME CUST_ID
---------------------------------------- ----------
21 21
--EXPDP\IMPDP的案例
expdp hr/hr directory=DATA_PUMP_DIR dumpfile=CUSTOMER99.dmp tables=CUSTOMER99
CREATE TABLE customer_expdp
( cust_name varchar2(20)
, cust_id NUMBER
)
PARTITION BY RANGE (cust_id)
( PARTITION q11 VALUES LESS THAN (10)
, PARTITION q21 VALUES LESS THAN (20)
, PARTITION q31 VALUES LESS THAN (30)
, PARTITION q41 VALUES LESS THAN (40)
, partition q51 VALUES LESS THAN(maxvalue)
);
impdp hr/hr directory=DATA_PUMP_DIR dumpfile=CUSTOMER99.dmp remap_table=CUSTOMER99:customer_expdp table_exists_action=append
SQL> select * from customer_expdp partition(q31);
CUST_NAME CUST_ID
---------------------------------------- ----------
21 21
感谢各位的阅读，以上就是“mysql的普通表怎么转换成分区表”的内容了，经过本文的学习后，相信大家对mysql的普通表怎么转换成分区表这一问题有了更深刻的体会，具体使用情况还需要大家实践验证。这里是亿速云，小编将为大家推送更多相关知识点的文章，欢迎关注！
