1、問題描述
mysql的開發人員經常按時間範圍分割槽不知道時間上怎麼寫，筆者把總結歸納下來，能幫助自已和分享成果。
2、解決問題
mysql對時間範圍分割槽，可以是按年，按月，按天，按分，按秒，如下案例，這裡注意點：範圍分割槽是乙個開始是開區間，結束是閉區間：[0,10),[10,20),[20,30).....
2.1、按年
create table sales_year
(date datetime
)engine = innodb
partition by range(year(date))
(partition p2020 values less than (2020),
partition p2021 values less than (2021),
partition p2022 values less than (2022),
partition pmax values less than (maxvalue)
2.1、按月create table sales_month
(date datetime
)engine = innodb
partition by range(month(date))
(partition p202001 values less than (202001),
partition p202002 values less than (202002),
partition p202003 values less than (202003),
partition pmax values less than (maxvalue)
2.2、按天create table sales_day
(date datetime
)engine = innodb
partition by range(to_days(date))
(partition p20200101 values less than (20200101),
partition p20200202 values less than (20200102),
partition p20200203 values less than (20200103),
partition pmax values less than (maxvalue)
2.3、按分
create table sales_second
(date timestamp
)engine = innodb
partition by range(to_seconds(date))
(partition p1 values less than (63769153669),
partition p2 values less than (63769153734),
partition p3 values less than (63769153752),
partition pmax values less than (maxvalue)
2.4、按秒
create table sales_timestamp
(id int,
date timestamp
partition by range ( unix_timestamp(date) )
(partition p1 values less than ( unix_timestamp('2020-10-02 00:00:00') ),
partition p2 values less than ( unix_timestamp('2020-10-03 00:00:00') ),
partition p3 values less than ( unix_timestamp('2020-10-04 00:00:00') ),
partition p4 values less than ( unix_timestamp('2020-10-05 00:00:00') ),
partition p5 values less than ( unix_timestamp('2020-10-06 00:00:00') ),
partition p6 values less than ( unix_timestamp('2020-10-07 00:00:00') ),
partition p7 values less than ( unix_timestamp('2020-10-08 00:00:00') ),
partition p8 values less than ( unix_timestamp('2020-10-09 00:00:00') ),
partition p9 values less than ( unix_timestamp('2020-10-10 00:00:00') ),
partition p10 values less than (unix_timestamp('2020-10-11 00:00:00') ),
partition pmax values less than (maxvalue)
insert into sales_timestamp(id,date) values( 1,current_timestamp());
insert into sales_timestamp(id,date) values( 2,current_timestamp());
insert into sales_timestamp(id,date) values(3,current_timestamp());
insert into sales_timestamp(id,date) values(4,current_timestamp());
insert into sales_timestamp(id,date) values( 5,current_timestamp());
insert into sales_timestamp(id,date) values( 5,'2020-10-05 00:00:00');
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