1、問題描述

mysql的開發人員經常按時間范圍分區不知道時間上怎么寫，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對時間范圍分區，可以是按年，按月，按天，按分，按秒，如下案例，這里注意點：范圍分區是一個開始是開區間，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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