mysql-alter table（每天约有15行和200个分区）占用的时间太长

我有一张大约15米长的桌子。 每行都有一个时间戳。 该表在过去2个月和以后4个月都有每日分区

我正在尝试运行“ALTERTABLE”查询，它运行了大约一个小时，但仍然没有完成

表的总大小约为12GB

有什么想法吗

CREATE TABLE `table` (
    `field1` BIGINT(20) NOT NULL AUTO_INCREMENT,
    `field2` VARCHAR(255) NOT NULL,
    `field3` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
    `field4` INT(11) NOT NULL DEFAULT '0',
    `field5` INT(11) NOT NULL DEFAULT '0',
    `field6` INT(11) NOT NULL DEFAULT '0',
    `field7` INT(11) NOT NULL DEFAULT '0',
    `field8` INT(11) NOT NULL DEFAULT '0',
    `field9` INT(11) NOT NULL DEFAULT '0',
    `field9` VARCHAR(3) NOT NULL,
    `field10` INT(11) NOT NULL DEFAULT '0',
    `field11` INT(11) NOT NULL DEFAULT '0',
    `field12` INT(11) UNSIGNED NOT NULL,
    `field13` TEXT NOT NULL,
    `field14` VARCHAR(255) NOT NULL,
    `field15` TINYINT(3) UNSIGNED NOT NULL DEFAULT '0',
    `field16` TEXT NOT NULL,
    `field17` VARCHAR(100) NOT NULL,
    `field18` TEXT NULL,
    `field19` VARCHAR(250) NULL DEFAULT NULL,
    PRIMARY KEY (`field1`, `field12`),
    UNIQUE INDEX `uid` (`field3`, `field3`),
    INDEX `inst_date` (`field2`),
    INDEX `offer_id` (`field4`)
)
COLLATE='utf8_general_ci'
AUTO_INCREMENT=15559118
/*!50100 PARTITION BY RANGE (UNIX_TIMESTAMP(field2))
(PARTITION p20150925 VALUES LESS THAN (1443139200) ENGINE = InnoDB,
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altertablesql

ALTER TABLE `clicks`
    ADD COLUMN `NEW_FIELD` VARCHAR(200) NULL DEFAULT NULL AFTER `LAST_FIELD`;

---

显示表格结构和

ALTER

命令。是否添加列、更改数据类型、添加约束？由于安全原因，我认为我无法这样做，因为您的问题太广泛。我正在添加带有通用字段的create table（创建表）复选框Show your table structure（显示表结构）和

ALTER

命令。您是否添加列、更改数据类型、添加约束？我认为出于安全原因，我无法这样做，因为您的问题太广泛了。我正在使用通用fieldsCheck添加创建表