Question

声明：我知道还有其他问题，标题与我的相似。但是，其他人没有使用EF7 RC1，pm命令也不同。

我的问题是无论我做什么，我都无法让EF7创建我的桌子。此外，我无法强制执行任何操作或-ignorechanges甚至-script，因为这些选项似乎已从命令中删除。

我的背景是

public class EventsContext : DbContext//ContextBase
    {
        public DbSet<Publisher> Publishers { get; set; }

        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            optionsBuilder.UseSqlServer(ConfigurationManager.ConnectionStrings[Constants.Database.CONTEXT_NAME].ConnectionString);
        }

        protected override void OnModelCreating(ModelBuilder builder)
        {
            const string entityName = "Publisher";
            builder.HasSequence<long>(entityName).StartsAt(1).IncrementsBy(1);

            builder.Entity<Publisher>(o =>
            {
                o.HasKey(x => x.Id);
                o.Property(x => x.Id).HasDefaultValueSql($"NEXT VALUE FOR {entityName}");
                o.Property(x => x.LoggedUserId).IsRequired();
                o.Property(x => x.CreatedDate).IsRequired().HasDefaultValue(DateTime.SpecifyKind(DateTime.UtcNow, DateTimeKind.Utc));
                o.Property(x => x.UpdatedDate).IsRequired();
                o.Property(x => x.Deleted).IsRequired().HasDefaultValue(false);
                o.Property(x => x.RowVersion).ValueGeneratedOnAddOrUpdate().IsConcurrencyToken();

                o.ToTable(Constants.Database.TableNames.PUBLISHER);
                o.Property(x => x.Name).HasMaxLength(Constants.DataFields.Length.MEDIUM_TEXT);
                o.Property(x => x.Email).HasMaxLength(Constants.DataFields.Length.LONG_TEXT);
                o.Property(x => x.FacebookAccount).HasMaxLength(Constants.DataFields.Length.LONG_TEXT);
                o.Property(x => x.TwitterAccount).HasMaxLength(Constants.DataFields.Length.LONG_TEXT);
            });
            builder.Ignore<Event>();
        }
    }

我只是在玩序列和rowversion。

我的发布商类是

public class Publisher
{

    public virtual long LoggedUserId { get; set; }
    public virtual DateTime CreatedDate { get; set; }
    public virtual DateTime UpdatedDate { get; set; }
    public virtual byte[] RowVersion { get; set; }

    public virtual long Id { get; protected set; }
    public virtual bool Deleted { get; set; }
    public virtual string FacebookAccount { get; set; }
    public virtual string TwitterAccount { get; set; }
    public virtual string Email { get; set; }
    public virtual string Name { get; set; }

    public virtual IList<Event> Events { get; set; }

}

之后

add-migration init

我得到了

 public partial class init : Migration
    {
        protected override void Up(MigrationBuilder migrationBuilder)
        {
            migrationBuilder.CreateSequence(
                name: "Publisher");
            migrationBuilder.CreateTable(
                name: "Publisher",
                columns: table => new
                {
                    Id = table.Column<long>(nullable: false, defaultValueSql: "NEXT VALUE FOR Publisher"),
                    CreatedDate = table.Column<DateTime>(nullable: false, defaultValue: new DateTime(2016, 2, 24, 14, 50, 56, 456, DateTimeKind.Unspecified)),
                    Deleted = table.Column<bool>(nullable: false, defaultValue: false),
                    Email = table.Column<string>(nullable: true),
                    FacebookAccount = table.Column<string>(nullable: true),
                    LoggedUserId = table.Column<long>(nullable: false),
                    Name = table.Column<string>(nullable: true),
                    RowVersion = table.Column<byte[]>(nullable: true),
                    TwitterAccount = table.Column<string>(nullable: true),
                    UpdatedDate = table.Column<DateTime>(nullable: false)
                },
                constraints: table =>
                {
                    table.PrimaryKey("PK_Publisher", x => x.Id);
                });
        }

        protected override void Down(MigrationBuilder migrationBuilder)
        {
            migrationBuilder.DropSequence("Publisher");
            migrationBuilder.DropTable("Publisher");
        }
    }

之后

update-database

我得到了

应用迁移'20160224145056_init'。 System.Data.SqlClient.SqlException（0x80131904）：已经有了数据库中名为“Publisher”的对象。在 System.Data.SqlClient.SqlConnection.OnError（SqlException异常，布尔值breakConnection，Action 1 wrapCloseInAction) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action 1 wrapCloseInAction）at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning（TdsParserStateObject stateObj，Boolean callerHasConnectionLock，Boolean asyncClose）at System.Data.SqlClient.TdsParser.TryRun（RunBehavior runBehavior， SqlCommand cmdHandler，SqlDataReader dataStream， BulkCopySimpleResultSet bulkCopyHandler，TdsParserStateObject stateObj，布尔＆amp; dataReady）at System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds（字符串 methodName，Boolean async，Int32 timeout，Boolean asyncWrite）at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery（TaskCompletionSource 1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean asyncWrite) at System.Data.SqlClient.SqlCommand.ExecuteNonQuery() at Microsoft.Data.Entity.Storage.Internal.RelationalCommand.<>c.<ExecuteNonQuery>b__13_0(DbCommand cmd, IRelationalConnection con) at Microsoft.Data.Entity.Storage.Internal.RelationalCommand.Execute[T](IRelationalConnection connection, Func 3 action，String executeMethod，Boolean openConnection，Boolean closeConnection）at Microsoft.Data.Entity.Storage.Internal.RelationalCommand.ExecuteNonQuery（IRelationalConnection connection，Boolean manageConnection）at Microsoft.Data.Entity.Storage.RelationalCommandExtensions.ExecuteNonQuery（IEnumerable的1 commands, IRelationalConnection connection) at Microsoft.Data.Entity.Migrations.Internal.Migrator.Execute(IEnumerable 1 relationalCommands）at Microsoft.Data.Entity.Migrations.Internal.Migrator.Migrate（字符串 targetMigration） Microsoft.Data.Entity.Design.MigrationsOperations.UpdateDatabase（字符串 targetMigration，String contextType）at Microsoft.Data.Entity.Design.OperationExecutor.UpdateDatabaseImpl（字符串 targetMigration，String contextType）at Microsoft.Data.Entity.Design.OperationExecutor.UpdateDatabase＆LT;＆GT; c__DisplayClass0_1＆LT; .ctor＆GT; b__0（）在 Microsoft.Data.Entity.Design.OperationExecutor.OperationBase.Execute（动作 action）ClientConnectionId：c34ffd41-714b-4412-a20f-8e18a58b58c1错误编号：2714，状态：6，类：16已经有一个名为的对象数据库中的“发布者”。

Answer 1

事实证明我在数据库上有重复的名称。序列和表格具有相同的名称。

EF7 RC1：数据库

1 个答案: