a1114fbbf5
dashboard-cdc-worker 的 24h 窗口查询缺 create_time 可用索引， 每 5 分钟 examined ~18 万行；(sys_origin, create_time) 索引 已于 2026-07-10 在生产在线应用。 Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
21 lines
1.2 KiB
SQL
21 lines
1.2 KiB
SQL
-- dashboard-cdc-worker 每 5 分钟按 create_time 24 小时窗口回读 game_lucky_gift_count（1400 万行），
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-- 原有索引均以 sys_origin,user_id 开头，无法按时间窗口定位，只能从 user_base_info 反向驱动全量探测
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-- （单次 examined ~18 万行，是线上 MySQL CPU 波动来源之一）。
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-- 本索引已于 2026-07-10 通过 ALGORITHM=INPLACE, LOCK=NONE 在生产手工应用（耗时 19s），此文件用于存档与新环境初始化。
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SET @current_schema := DATABASE();
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SET @add_game_lucky_gift_count_sorigin_ctime_sql := IF(
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NOT EXISTS (
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SELECT 1 FROM INFORMATION_SCHEMA.STATISTICS
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WHERE table_schema = @current_schema
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AND table_name = 'game_lucky_gift_count'
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AND index_name = 'idx_game_lucky_gift_count_sorigin_ctime'
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),
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'ALTER TABLE `game_lucky_gift_count` ADD INDEX `idx_game_lucky_gift_count_sorigin_ctime` (`sys_origin`, `create_time`), ALGORITHM=INPLACE, LOCK=NONE',
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'SELECT 1'
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);
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PREPARE add_game_lucky_gift_count_sorigin_ctime_stmt FROM @add_game_lucky_gift_count_sorigin_ctime_sql;
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EXECUTE add_game_lucky_gift_count_sorigin_ctime_stmt;
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DEALLOCATE PREPARE add_game_lucky_gift_count_sorigin_ctime_stmt;
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