Enabling In‑Train Seat Swaps on 12306: A Practical SQL Design

The article recounts a failed ticket change on a high‑speed train, introduces the newly launched 12306 in‑train seat‑swap feature, shares passenger reactions, provides a detailed SQL implementation for segment‑based seat allocation, and reflects on its impact and future suggestions.

RailwaySQLin‑train seat change

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Enabling In‑Train Seat Swaps on 12306: A Practical SQL Design