Миграция EF Core Code-First Изменение первичного ключа с Int на длинный сбой

Question

Я использую Do tnet Core 3.1 с Entity Framework Core 3.1.3, используя Code-First с Azure SQL База данных.

Во время разработки я хочу изменить Первичный ключ таблицы от int до long из класса Model в базовом проекте do tnet и используйте add -igration . Однако при использовании Update-Database возникают ошибки:

Failed executing DbCommand (153ms) [Parameters=[], CommandType='Text', CommandTimeout='600']
DECLARE @var0 sysname;
SELECT @var0 = [d].[name]
FROM [sys].[default_constraints] [d]
INNER JOIN [sys].[columns] [c] ON [d].[parent_column_id] = [c].[column_id] AND [d].[parent_object_id] = [c].[object_id]
WHERE ([d].[parent_object_id] = OBJECT_ID(N'[Warnings]') AND [c].[name] = N'Id');
IF @var0 IS NOT NULL EXEC(N'ALTER TABLE [Warnings] DROP CONSTRAINT [' + @var0 + '];');
ALTER TABLE [Warnings] ALTER COLUMN [Id] bigint NOT NULL;
fail: Microsoft.EntityFrameworkCore.Database.Command[20102]
      Failed executing DbCommand (153ms) [Parameters=[], CommandType='Text', CommandTimeout='600']
      DECLARE @var0 sysname;
      SELECT @var0 = [d].[name]
      FROM [sys].[default_constraints] [d]
      INNER JOIN [sys].[columns] [c] ON [d].[parent_column_id] = [c].[column_id] AND [d].[parent_object_id] = [c].[object_id]
      WHERE ([d].[parent_object_id] = OBJECT_ID(N'[Warnings]') AND [c].[name] = N'Id');
      IF @var0 IS NOT NULL EXEC(N'ALTER TABLE [Warnings] DROP CONSTRAINT [' + @var0 + '];');
      ALTER TABLE [Warnings] ALTER COLUMN [Id] bigint NOT NULL;
Microsoft.Data.SqlClient.SqlException (0x80131904): ALTER TABLE failed because the following SET options have incorrect settings: 'ANSI_WARNINGS'. Verify that SET options are correct for use with indexed views and/or indexes on computed columns and/or filtered indexes and/or query notifications and/or XML data type methods and/or spatial index operations.
   at Microsoft.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   at Microsoft.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   at Microsoft.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
   at Microsoft.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
   at Microsoft.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean isAsync, Int32 timeout, Boolean asyncWrite)
   at Microsoft.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, Boolean sendToPipe, Int32 timeout, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry, String methodName)
   at Microsoft.Data.SqlClient.SqlCommand.ExecuteNonQuery()
   at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteNonQuery(RelationalCommandParameterObject parameterObject)
   at Microsoft.EntityFrameworkCore.Migrations.MigrationCommand.ExecuteNonQuery(IRelationalConnection connection, IReadOnlyDictionary`2 parameterValues)
   at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationCommandExecutor.ExecuteNonQuery(IEnumerable`1 migrationCommands, IRelationalConnection connection)
   at Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator.Migrate(String targetMigration)
   at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations.UpdateDatabase(String targetMigration, String contextType)
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.UpdateDatabaseImpl(String targetMigration, String contextType)
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.UpdateDatabase.<>c__DisplayClass0_0.<.ctor>b__0()
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)
ClientConnectionId:774960a2-b0a7-4134-8050-0b8b18be8d37
Error Number:1934,State:1,Class:16
ALTER TABLE failed because the following SET options have incorrect settings: 'ANSI_WARNINGS'. Verify that SET options are correct for use with indexed views and/or indexes on computed columns and/or filtered indexes and/or query notifications and/or XML data type methods and/or spatial index operations.

Как решить эту проблему?

Answer 1

Возможно, у вас есть внешние ключи, которые используют этот идентификатор. Вы не можете сделать, если есть, вы должны сначала удалить внешние ключи, а затем попробовать, а затем снова добавить внешние ключи.