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41 lines
1.8 KiB
SQL
41 lines
1.8 KiB
SQL
-- Partitioned logs table draft
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-- 目标：按月分区日志表，提升写入吞吐和查询历史的性能
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-- 说明：本草案为初步设计，待评审后落地实现
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-- Assumptions:
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-- - MariaDB 10.x 版本，支持分区按 RANGE (TO_DAYS(log_time))
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-- - 日志字段与现有采集日志表接近
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-- - 每月一个分区，覆盖历史数据的归档策略待定
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DROP TABLE IF EXISTS logs_partitioned;
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CREATE TABLE logs_partitioned (
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id BIGINT AUTO_INCREMENT PRIMARY KEY,
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machine_id INT NOT NULL,
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program_name VARCHAR(128) NOT NULL,
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log_time DATETIME NOT NULL,
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log_level VARCHAR(16) DEFAULT 'INFO',
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raw_payload JSON,
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analysis_summary TEXT,
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analysis_version VARCHAR(64) DEFAULT 'v1',
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-- 便于按机床与时间筛选的组合索引
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KEY idx_machine_time (machine_id, log_time),
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KEY idx_program_time (program_name, log_time)
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)
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PARTITION BY RANGE (TO_DAYS(log_time)) (
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PARTITION p202401 VALUES LESS THAN (TO_DAYS('2024-02-01')),
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PARTITION p202402 VALUES LESS THAN (TO_DAYS('2024-03-01')),
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PARTITION p202403 VALUES LESS THAN (TO_DAYS('2024-04-01')),
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PARTITION p202404 VALUES LESS THAN (TO_DAYS('2024-05-01')),
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PARTITION p202405 VALUES LESS THAN (TO_DAYS('2024-06-01')),
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PARTITION p202406 VALUES LESS THAN (TO_DAYS('2024-07-01')),
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PARTITION p202407 VALUES LESS THAN (TO_DAYS('2024-08-01')),
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PARTITION p202408 VALUES LESS THAN (TO_DAYS('2024-09-01')),
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PARTITION p202409 VALUES LESS THAN (TO_DAYS('2024-10-01')),
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PARTITION p202410 VALUES LESS THAN (TO_DAYS('2024-11-01')),
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PARTITION p202411 VALUES LESS THAN (TO_DAYS('2024-12-01')),
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PARTITION p202412 VALUES LESS THAN (TO_DAYS('2025-01-01')),
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PARTITION p202501 VALUES LESS THAN (TO_DAYS('2025-02-01'))
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);
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-- 备注：
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- 未来月份的分区建议通过定期执行脚本自动追加分区
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- 可以通过 ALTER TABLE logs_partitioned REORGANIZE PARTITION ...? 进行滚动归档
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