将索引缩短为 IX_CE_Offering_Status_WaitlistedAt。
将候补迁移改为可重入:先检查列和索引是否存在,再执行 DDL。 附件中已经成功添加 WaitlistedAt、但索引创建失败的数据库可直接重试,不会报重复列。 运行时和 dotnet ef 连接统一开启 AllowUserVariables;Connector/NET 默认关闭该选项。Connector/NET 官方说明 增加所有 MySQL 索引名不得超过 64 字符的回归测试。
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@@ -518,7 +518,7 @@ public sealed class AppDbContext(DbContextOptions<AppDbContext> options)
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x.CourseSelectionOfferingId,
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x.Status,
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x.WaitlistedAt
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});
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}).HasDatabaseName("IX_CE_Offering_Status_WaitlistedAt");
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entity.HasOne(x => x.CourseSelectionOffering)
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.WithMany(x => x.Enrollments)
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.HasForeignKey(x => x.CourseSelectionOfferingId)
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