将 MySQL Table 中的分区添加到已分区的 Table

Question

我有 table 如下：

CREATE TABLE TEST_P (
    ID VARCHAR(64),
    F_NAME int NOT NULL,
    L_NAME VARCHAR(64),
    CREATETS DATETIME NOT NULL,
    PRIMARY KEY(DATA_TRACE_ID,CREATETS)
)
PARTITION BY RANGE(DAY(CREATETS))(
        PARTITION day1 VALUES LESS THAN (2),
        PARTITION day2 VALUES LESS THAN (3),
        PARTITION day3 VALUES LESS THAN (4),
        PARTITION day4 VALUES LESS THAN (5),
        PARTITION day5 VALUES LESS THAN (6),
        PARTITION day6 VALUES LESS THAN (7),
        PARTITION day7 VALUES LESS THAN (8),
        PARTITION day8 VALUES LESS THAN (9),
        PARTITION day9 VALUES LESS THAN (10),
        PARTITION day10 VALUES LESS THAN (11),
        PARTITION day11 VALUES LESS THAN (12),
        PARTITION day12 VALUES LESS THAN (13),
        PARTITION day13 VALUES LESS THAN (14),
        PARTITION day14 VALUES LESS THAN (15),
        PARTITION day15 VALUES LESS THAN (16),
        PARTITION day16 VALUES LESS THAN (17),
        PARTITION day17 VALUES LESS THAN (18),
        PARTITION day18 VALUES LESS THAN (19),
        PARTITION day19 VALUES LESS THAN (20),
        PARTITION day20 VALUES LESS THAN (21),
        PARTITION day21 VALUES LESS THAN (22),
        PARTITION day22 VALUES LESS THAN (23),
        PARTITION day23 VALUES LESS THAN (24),
        PARTITION day24 VALUES LESS THAN (25),
        PARTITION day25 VALUES LESS THAN (26),
        PARTITION day26 VALUES LESS THAN (27),
        PARTITION day27 VALUES LESS THAN (28),
        PARTITION day28 VALUES LESS THAN (29),
        PARTITION day29 VALUES LESS THAN (30),
        PARTITION day30 VALUES LESS THAN (31),
        PARTITION day31 VALUES LESS THAN MAXVALUE
);

我想编写一个脚本来删除今天+1 天的分区并创建一个具有相同分区条件的新分区。例如：

我想删除分区 day5，因为我想删除此 table 中的数据。

我正在这样做：

ALTER TABLE TEST_P REORGANIZE PARTITION day5 into 
(PARTITION day5 VALUES LESS THAN (5),
    PARTITION day6 VALUES LESS THAN (6),
    PARTITION day7 VALUES LESS THAN (7),
    PARTITION day8 VALUES LESS THAN (8),
    PARTITION day9 VALUES LESS THAN (9),
    PARTITION day10 VALUES LESS THAN (10),
    PARTITION day11 VALUES LESS THAN (11),
    PARTITION day12 VALUES LESS THAN (12),
    PARTITION day13 VALUES LESS THAN (13),
    PARTITION day14 VALUES LESS THAN (14),
    PARTITION day15 VALUES LESS THAN (15),
    PARTITION day16 VALUES LESS THAN (16),
    PARTITION day17 VALUES LESS THAN (17),
    PARTITION day18 VALUES LESS THAN (18),
    PARTITION day19 VALUES LESS THAN (19),
    PARTITION day20 VALUES LESS THAN (20),
    PARTITION day21 VALUES LESS THAN (21),
    PARTITION day22 VALUES LESS THAN (22),
    PARTITION day23 VALUES LESS THAN (23),
    PARTITION day24 VALUES LESS THAN (24),
    PARTITION day25 VALUES LESS THAN (25),
    PARTITION day26 VALUES LESS THAN (26),
    PARTITION day27 VALUES LESS THAN (27),
    PARTITION day28 VALUES LESS THAN (28),
    PARTITION day29 VALUES LESS THAN (29),
    PARTITION day30 VALUES LESS THAN (30),
    PARTITION day31 VALUES LESS THAN (31),
    PARTITION p_default VALUES LESS THAN MAXVALUE)

但我明白了

Error in list of partitions to REORGANIZE

这个 table 增长非常大非常快，所以我想删除其中一个月的旧数据并且不影响 table 的性能。

Answer 1

滑动时间序列是 PARTITIONing 的少数用例之一。不幸的是，您的方法效率低下（如果它甚至可以修复的话）。

取而代之的是，使用实际的天数（不是月中的某天）并每晚添加一个新分区 -- 通过 REORGANIZEing 将 'future' 分区分为明天和一个新的 'future'。还有，DROP PARTITION要折腾老大。详情 here.

将 MySQL Table 中的分区添加到已分区的 Table

Add partition in MySQL Table to an Already Partitioned Table

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