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perf(spatial-joins): 優化空間距離計算並補充實作文件 - #4
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reboot0707
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Oct 5, 2026
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- 預先計算包覆圓，以保守粗篩減少精確距離配對
- 將候選與精確距離存入暫存表，避免彙總時重複計算
- 保留原始距離門檻、已評分資料保護與交易一致性
- 補充 SQL 優化原理、驗證與部署 know-how
- 預先計算包覆圓，以保守粗篩減少精確距離配對 - 將候選與精確距離存入暫存表，避免彙總時重複計算 - 保留原始距離門檻、已評分資料保護與交易一致性 - 補充 SQL 優化原理、驗證與部署 know-how 驗證：建置與 117 項既有檢查通過，額外邊界案例通過。 目前資料在 100 公尺門檻下，精確配對減至 177 組， 候選計算約 3.8 秒。
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