Mysql表如何按照日期字段的年月分区

CREATE TABLE your_table_name (
    id INT NOT NULL AUTO_INCREMENT,
    sale_date DATE NOT NULL,
    amount DECIMAL(10, 2) NOT NULL,
    PRIMARY KEY (id, sale_date)
) PARTITION BY RANGE COLUMNS(sale_date) (
    PARTITION p2020_01 VALUES LESS THAN ('2020-02-01'),
    PARTITION p2020_02 VALUES LESS THAN ('2020-03-01'),
    PARTITION p2020_03 VALUES LESS THAN ('2020-04-01'),
    PARTITION p2021_01 VALUES LESS THAN ('2021-02-01'),
    PARTITION p_max VALUES LESS THAN (MAXVALUE)
);

ALTER TABLE your_table_name DROP PRIMARY KEY;

ALTER TABLE your_table_name 
ADD PRIMARY KEY (id, xxdate);

SELECT DISTINCT DATE_FORMAT(xxdate, '%Y-%m') AS YM
FROM your_table_name 
ORDER BY YM;

# 我这只有202307、202308两个月数据
ALTER TABLE your_table_name 
PARTITION BY RANGE COLUMNS(xxdate) (
    PARTITION p2023_07 VALUES LESS THAN ('2023-08-01'),
    PARTITION p2023_08 VALUES LESS THAN ('2023-09-01'),
    PARTITION p_max VALUES LESS THAN (MAXVALUE)
);

EXPLAIN  SELECT * from your_table_name where xxdate BETWEEN '2023-07-01' and '2023-07-31';

ALTER TABLE your_table_name 
PARTITION BY RANGE COLUMNS(xxdate) (
    PARTITION p2023_07 VALUES LESS THAN ('2023-08-01'),
    PARTITION p2023_08 VALUES LESS THAN ('2023-09-01'),
    # 在这里添加
    PARTITION p_max VALUES LESS THAN (MAXVALUE)
);