11 lines
472 B
MySQL
11 lines
472 B
MySQL
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-- 修改iot_device_data表的delivery_id字段，关联到delivery表的主键
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-- 将delivery_id改为整数类型，关联delivery表的id字段
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ALTER TABLE `iot_device_data`
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MODIFY COLUMN `delivery_id` int(11) DEFAULT NULL COMMENT '装车订单ID，关联delivery表主键';
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-- 添加外键约束（可选）
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-- ALTER TABLE `iot_device_data`
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-- ADD CONSTRAINT `fk_iot_device_delivery`
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-- FOREIGN KEY (`delivery_id`) REFERENCES `delivery`(`id`) ON DELETE SET NULL;
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