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包括将数据库或表或列字符集更改为 utf8mb4。谢谢!
走另一条路(从 utf8mb4 到 utf8) - 根据mysql 的手册,风险在于您的字段是否包含“补充”字符。否则它们应该是相同的。看起来应该没有风险按照您的意愿进行。