7

我使用 codefirst，我使用 Elmah。我每次重新创建数据库时，都必须从文件中手动添加代码：

/*

   ELMAH - Error Logging Modules and Handlers for ASP.NET
   Copyright (c) 2004-9 Atif Aziz. All rights reserved.

    Author(s):

        Atif Aziz, http://www.raboof.com
        Phil Haacked, http://haacked.com

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

*/

-- ELMAH DDL script for Microsoft SQL Server 2000 or later.

-- $Id: SQLServer.sql 677 2009-09-29 18:02:39Z azizatif $

DECLARE @DBCompatibilityLevel INT
DECLARE @DBCompatibilityLevelMajor INT
DECLARE @DBCompatibilityLevelMinor INT

SELECT 
    @DBCompatibilityLevel = cmptlevel 
FROM 
    master.dbo.sysdatabases 
WHERE 
    name = DB_NAME()

IF @DBCompatibilityLevel <> 80
BEGIN

    SELECT @DBCompatibilityLevelMajor = @DBCompatibilityLevel / 10, 
           @DBCompatibilityLevelMinor = @DBCompatibilityLevel % 10

    PRINT N'
    ===========================================================================
    WARNING! 
    ---------------------------------------------------------------------------

    This script is designed for Microsoft SQL Server 2000 (8.0) but your 
    database is set up for compatibility with version ' 
    + CAST(@DBCompatibilityLevelMajor AS NVARCHAR(80)) 
    + N'.' 
    + CAST(@DBCompatibilityLevelMinor AS NVARCHAR(80)) 
    + N'. Although 
    the script should work with later versions of Microsoft SQL Server, 
    you can ensure compatibility by executing the following statement:

    ALTER DATABASE [' 
    + DB_NAME() 
    + N'] 
    SET COMPATIBILITY_LEVEL = 80

    If you are hosting ELMAH in the same database as your application 
    database and do not wish to change the compatibility option then you 
    should create a separate database to host ELMAH where you can set the 
    compatibility level more freely.

    If you continue with the current setup, please report any compatibility 
    issues you encounter over at:

    http://code.google.com/p/elmah/issues/list

    ===========================================================================
'
END
GO

/* ------------------------------------------------------------------------ 
        TABLES
   ------------------------------------------------------------------------ */

CREATE TABLE [dbo].[ELMAH_Error]
(
    [ErrorId]     UNIQUEIDENTIFIER NOT NULL,
    [Application] NVARCHAR(60)  COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
    [Host]        NVARCHAR(50)  COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
    [Type]        NVARCHAR(100) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
    [Source]      NVARCHAR(60)  COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
    [Message]     NVARCHAR(500) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
    [User]        NVARCHAR(50)  COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
    [StatusCode]  INT NOT NULL,
    [TimeUtc]     DATETIME NOT NULL,
    [Sequence]    INT IDENTITY (1, 1) NOT NULL,
    [AllXml]      NTEXT COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL 
) 
ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]

GO

ALTER TABLE [dbo].[ELMAH_Error] WITH NOCHECK ADD 
    CONSTRAINT [PK_ELMAH_Error] PRIMARY KEY NONCLUSTERED ([ErrorId]) ON [PRIMARY] 
GO

ALTER TABLE [dbo].[ELMAH_Error] ADD 
    CONSTRAINT [DF_ELMAH_Error_ErrorId] DEFAULT (NEWID()) FOR [ErrorId]
GO

CREATE NONCLUSTERED INDEX [IX_ELMAH_Error_App_Time_Seq] ON [dbo].[ELMAH_Error] 
(
    [Application]   ASC,
    [TimeUtc]       DESC,
    [Sequence]      DESC
) 
ON [PRIMARY]
GO

/* ------------------------------------------------------------------------ 
        STORED PROCEDURES                                                      
   ------------------------------------------------------------------------ */

SET QUOTED_IDENTIFIER ON 
GO
SET ANSI_NULLS ON 
GO

CREATE PROCEDURE [dbo].[ELMAH_GetErrorXml]
(
    @Application NVARCHAR(60),
    @ErrorId UNIQUEIDENTIFIER
)
AS

    SET NOCOUNT ON

    SELECT 
        [AllXml]
    FROM 
        [ELMAH_Error]
    WHERE
        [ErrorId] = @ErrorId
    AND
        [Application] = @Application

GO
SET QUOTED_IDENTIFIER OFF 
GO
SET ANSI_NULLS ON 
GO

SET QUOTED_IDENTIFIER ON 
GO
SET ANSI_NULLS ON 
GO

CREATE PROCEDURE [dbo].[ELMAH_GetErrorsXml]
(
    @Application NVARCHAR(60),
    @PageIndex INT = 0,
    @PageSize INT = 15,
    @TotalCount INT OUTPUT
)
AS 

    SET NOCOUNT ON

    DECLARE @FirstTimeUTC DATETIME
    DECLARE @FirstSequence INT
    DECLARE @StartRow INT
    DECLARE @StartRowIndex INT

    SELECT 
        @TotalCount = COUNT(1) 
    FROM 
        [ELMAH_Error]
    WHERE 
        [Application] = @Application

    -- Get the ID of the first error for the requested page

    SET @StartRowIndex = @PageIndex * @PageSize + 1

    IF @StartRowIndex <= @TotalCount
    BEGIN

        SET ROWCOUNT @StartRowIndex

        SELECT  
            @FirstTimeUTC = [TimeUtc],
            @FirstSequence = [Sequence]
        FROM 
            [ELMAH_Error]
        WHERE   
            [Application] = @Application
        ORDER BY 
            [TimeUtc] DESC, 
            [Sequence] DESC

    END
    ELSE
    BEGIN

        SET @PageSize = 0

    END

    -- Now set the row count to the requested page size and get
    -- all records below it for the pertaining application.

    SET ROWCOUNT @PageSize

    SELECT 
        errorId     = [ErrorId], 
        application = [Application],
        host        = [Host], 
        type        = [Type],
        source      = [Source],
        message     = [Message],
        [user]      = [User],
        statusCode  = [StatusCode], 
        time        = CONVERT(VARCHAR(50), [TimeUtc], 126) + 'Z'
    FROM 
        [ELMAH_Error] error
    WHERE
        [Application] = @Application
    AND
        [TimeUtc] <= @FirstTimeUTC
    AND 
        [Sequence] <= @FirstSequence
    ORDER BY
        [TimeUtc] DESC, 
        [Sequence] DESC
    FOR
        XML AUTO

GO
SET QUOTED_IDENTIFIER OFF 
GO
SET ANSI_NULLS ON 
GO

SET QUOTED_IDENTIFIER ON 
GO
SET ANSI_NULLS ON 
GO

CREATE PROCEDURE [dbo].[ELMAH_LogError]
(
    @ErrorId UNIQUEIDENTIFIER,
    @Application NVARCHAR(60),
    @Host NVARCHAR(30),
    @Type NVARCHAR(100),
    @Source NVARCHAR(60),
    @Message NVARCHAR(500),
    @User NVARCHAR(50),
    @AllXml NTEXT,
    @StatusCode INT,
    @TimeUtc DATETIME
)
AS

    SET NOCOUNT ON

    INSERT
    INTO
        [ELMAH_Error]
        (
            [ErrorId],
            [Application],
            [Host],
            [Type],
            [Source],
            [Message],
            [User],
            [AllXml],
            [StatusCode],
            [TimeUtc]
        )
    VALUES
        (
            @ErrorId,
            @Application,
            @Host,
            @Type,
            @Source,
            @Message,
            @User,
            @AllXml,
            @StatusCode,
            @TimeUtc
        )

GO
SET QUOTED_IDENTIFIER OFF 
GO
SET ANSI_NULLS ON 
GO

我自动执行此代码？我尝试使用db.Database.ExecuteSqlCommand，但我得到了很多形式的错误：

Incorrect syntax near 'GO'.
Incorrect syntax near the keyword 'ALTER'.
Incorrect syntax near the keyword 'ALTER'.
Incorrect syntax near 'GO'.
Incorrect syntax near the keyword 'SET'.
Incorrect syntax near 'GO'.
Incorrect syntax near 'GO'.
Must declare the scalar variable "@ErrorId".
Incorrect syntax near 'GO'.
Incorrect syntax near 'GO'.
Incorrect syntax near 'GO'.
Incorrect syntax near 'GO'.
Must declare the scalar variable "@TotalCount".
Must declare the scalar variable "@PageIndex".
Must declare the scalar variable "@TotalCount".
Must declare the scalar variable "@Application".
Must declare the scalar variable "@PageSize".
Must declare the scalar variable "@PageSize".
Must declare the scalar variable "@Application".
Incorrect syntax near 'GO'.
Incorrect syntax near 'GO'.
Incorrect syntax near 'GO'.
Incorrect syntax near 'GO'.
Must declare the scalar variable "@ErrorId".
Incorrect syntax near 'GO'.
Incorrect syntax near 'GO'.
4

7 回答 7

18

尝试此迁移，请记住它希望所有 GO 语句都在一行上，并且文件使用 \r\n 行结尾。我使用elmah.sqlserver NuGet 包安装了 Elmah，它将 SqlServer.sql 文件放在适当的位置。您将需要更改资源名称以匹配您的项目。

public partial class Elmah : DbMigration
{
    public override void Up()
    {
        var sqlStream = Assembly.GetExecutingAssembly().GetManifestResourceStream("MyProject.App_Readme.Elmah.SqlServer.sql");
        using(var sqlStreamReader = new StreamReader(sqlStream))
        {
            string sqlScript = sqlStreamReader.ReadToEnd();
            ExecuteSqlScript(sqlScript);
        }
    }

    void ExecuteSqlScript(string sqlScript)
    {
        string[] sql = sqlScript.Split(new[] {"\r\nGO\r\n"}, StringSplitOptions.RemoveEmptyEntries);

        foreach (var sqlCommand in sql)
        {
            if (!string.IsNullOrWhiteSpace(sqlCommand))
                Sql(sqlCommand);
        }
    }

    public override void Down()
    {
        DropTable("ELMAH_Error");
        Sql("DROP PROCEDURE ELMAH_GetErrorXml");
        Sql("DROP PROCEDURE ELMAH_GetErrorsXml");
        Sql("DROP PROCEDURE ELMAH_LogError");
    }
}

我

于 2012-06-11T01:55:55.963 回答
4

只是为了将我对 OP 的评论正式化为答案；

我认为这里的最佳实践是只有您的代码优先数据库应该受到任何根本性更改的影响（即在模型更改时重新创建数据库）。与此无关的所有其他表应该在 ApplicationServices 数据库或类似数据库中，而不是在核心数据库中。这样，您就不会在每次需要使用简单的属性或数据类型更改来更新模型时创建支持噩梦。另外，每次进行更改时，您当然最终会丢失日志记录（和其他）数据库表的整个历史记录。

所以，总而言之，我认为你正在用一个可能不合适的解决方案来解决错误的问题。

这当然是我们在我们的商店和我之前参与过的项目中的做法。

于 2012-05-16T20:31:45.087 回答
0

您需要解析脚本，将其拆分为单独的 SQL 命令，并通过SqlCommand. 不幸的是，我不知道有一种方法可以自动执行此操作。

于 2012-05-16T19:38:09.547 回答
0

该脚本要求您分隔批次（GO是批次分隔符）并将每个批次单独发送到 SQL Server。我实际上有一个示例项目dbutilsqlcmd可以做到这一点，并且还支持更多的 sqlcmd 扩展，例如脚本中:setvar的$(variable)替换，这在部署时非常有用。

于 2012-05-16T20:02:34.200 回答
0

这是由 GO 语句分隔的一系列 SQL 命令（严格来说不是 T-SQL 命令）

可以使用 SQL Managment Studio 执行脚本，也可以使用命令行工具 SQLCMD.exe

于 2012-05-16T15:09:16.190 回答
0

我认为您不应该在 ExecuteSqlCommand 上运行那么多批次。

为什么不简单地在 SSMS 上执行呢？

于 2012-05-16T15:17:31.263 回答
0

现在有一个 nuget 包可以为您初始化 Elmah 表和过程：https ://www.nuget.org/packages/Elmah.SqlServer.EFInitializer/ 。将其添加到您的 Web 项目中。然后它将首先使用 EF 代码为您创建它。它将 Initializer 添加到您的 App_Start 文件夹中，因此您实际上不必添加任何代码。它将向您的数据库添加迁移，以确保它只添加一次。

于 2015-03-03T19:37:39.857 回答