mysql实现插入数据到分表

/*创建存储过程来新增部分数据到原始数据表*/
delimiter $$
drop procedure if exists proc_articleinfo;
create procedure proc_articleinfo()
begin
declare i int;
set i=1;
while(i<=32) do
insert into articleinfo(title,content,comment_time)
values (concat(‘数据库基础‘,i),concat(‘努力学习基础知识‘,i%4),DATE_FORMAT(NOW(),‘%Y-%m-%d %H:%i:%S‘));

set i=i+1;
end while;
end;
$$
delimiter ;

/*调用存储过程*/
call proc_articleinfo();

/*创建分表 */
DROP TABLE IF EXISTS `tb_articleinfo_0`;
CREATE TABLE `tb_articleinfo_0`(
`id` BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
`title` VARCHAR(20) DEFAULT NULL,
`content` VARCHAR(20) DEFAULT NULL,
`comment_time` VARCHAR(20) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=1;
CREATE TABLE `tb_articleinfo_1` LIKE `tb_articleinfo_0`;
CREATE TABLE `tb_articleinfo_2` LIKE `tb_articleinfo_0`;
CREATE TABLE `tb_articleinfo_3` LIKE `tb_articleinfo_0`;

/*创建主表*/
DROP TABLE IF EXISTS `tb_articleinfo`;
CREATE TABLE `tb_articleinfo`(
`id` BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
`title` VARCHAR(20) DEFAULT NULL,
`content` VARCHAR(20) DEFAULT NULL,
`comment_time` VARCHAR(20) DEFAULT NULL,
index(`id`)
) ENGINE=MRG_MYISAM UNION=(`tb_articleinfo_0`,`tb_articleinfo_1`,`tb_articleinfo_2`,`tb_articleinfo_3`) INSERT_METHOD=LAST DEFAULT CHARSET=utf8 AUTO_INCREMENT=1;

/*插入数据到分表*/
insert into tb_articleinfo_0(title,content,comment_time)
select title,content,comment_time from articleinfo where id%4=0;

insert into tb_articleinfo_1(title,content,comment_time)
select title,content,comment_time from articleinfo where id%4=1;

insert into tb_articleinfo_2(title,content,comment_time)
select title,content,comment_time from articleinfo where id%4=2;

insert into tb_articleinfo_3(title,content,comment_time)
select title,content,comment_time from articleinfo where id%4=3;

commit;

/*查询数据*/
select * from articleinfo;
select * from tb_articleinfo_0;
select * from tb_articleinfo_1;
select * from tb_articleinfo_2;
select * from tb_articleinfo_3;

mysql实现插入数据到分表

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