55 lines
2.6 KiB
MySQL
55 lines
2.6 KiB
MySQL
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-- crypto_binance_data表核心索引优化脚本
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-- 针对500万+数据量的关键查询性能优化
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-- 基于实际代码中的查询模式分析
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-- 核心索引1: 主要查询模式索引
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-- 覆盖: WHERE symbol = ? AND bar = ? ORDER BY timestamp
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-- 这是代码中最常见的查询模式
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CREATE INDEX idx_symbol_bar_timestamp ON crypto_binance_data (symbol, bar, timestamp);
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-- 核心索引2: 时间范围查询索引
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-- 覆盖: WHERE symbol = ? AND bar = ? AND timestamp BETWEEN ? AND ?
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-- 覆盖: WHERE symbol = ? AND bar = ? AND timestamp >= ? AND timestamp <= ?
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# CREATE INDEX idx_symbol_bar_timestamp_range ON crypto_binance_data (symbol, bar, timestamp);
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-- 核心索引3: 分组查询索引
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-- 覆盖: GROUP BY symbol, bar
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-- 覆盖: SELECT symbol, min(date_time), max(date_time) FROM crypto_binance_data WHERE bar='5m' GROUP BY symbol
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CREATE INDEX idx_bar_symbol ON crypto_binance_data (bar, symbol);
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-- 核心索引4: 技术指标查询索引
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-- 覆盖: WHERE symbol = ? AND bar = ? AND macd_signal = ?
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-- 覆盖: WHERE symbol = ? AND bar = ? AND kdj_signal = ?
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-- 覆盖: WHERE symbol = ? AND bar = ? AND rsi_signal = ?
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-- 覆盖: WHERE symbol = ? AND bar = ? AND boll_signal = ?
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-- 覆盖: WHERE symbol = ? AND bar = ? AND ma_cross = ?
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CREATE INDEX idx_symbol_bar_indicators ON crypto_binance_data (symbol, bar, macd_signal, kdj_signal, rsi_signal, boll_signal, ma_cross);
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-- 核心索引5: 时间戳排序索引
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-- 覆盖: ORDER BY timestamp DESC/ASC
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-- 优化: 查询最新数据 ORDER BY timestamp DESC LIMIT 1
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CREATE INDEX idx_timestamp_desc ON crypto_binance_data (timestamp DESC);
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-- 核心索引6: 日期时间查询索引
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-- 覆盖: WHERE date_time >= ? AND date_time <= ?
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-- 覆盖: ORDER BY date_time
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CREATE INDEX idx_date_time ON crypto_binance_data (date_time);
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-- 核心索引7: 成交量查询索引
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-- 覆盖: WHERE symbol = ? AND bar = ? AND volume > ?
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-- 覆盖: ORDER BY volume DESC
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CREATE INDEX idx_symbol_bar_volume ON crypto_binance_data (symbol, bar, volume);
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-- 核心索引8: 价格查询索引
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-- 覆盖: WHERE symbol = ? AND bar = ? AND close > ? AND close < ?
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-- 覆盖: ORDER BY close DESC/ASC
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CREATE INDEX idx_symbol_bar_close ON crypto_binance_data (symbol, bar, close);
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-- 执行前检查现有索引
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-- SHOW INDEX FROM crypto_binance_data;
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-- 执行后验证索引效果
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-- EXPLAIN SELECT * FROM crypto_binance_data WHERE symbol = 'BTC-USDT' AND bar = '5m' ORDER BY timestamp DESC LIMIT 100;
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-- EXPLAIN SELECT symbol, min(date_time), max(date_time) FROM crypto_binance_data WHERE bar='5m' GROUP BY symbol;
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-- EXPLAIN SELECT * FROM crypto_binance_data WHERE symbol = 'BTC-USDT' AND bar = '5m' AND timestamp BETWEEN 1640995200000 AND 1641081600000;
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