我正在运行存储过程，它负责插入、更新和删除表的条目。虽然插入和删除都运行顺利，但更新操作会更新除DATETIME2一列之外的所有列。
场景 - 我通过以下方式测试我的存储库模式（使用 C# 代码）：
- 删除整个
[BackgroundTaskAttachtment]表 - 创建 4 个新条目
- 删除在步骤 2 中创建的单个条目
- 等待 5 秒
- 修改其中一项
结果是[BackgroundTaskAttachtment]表中有 3 个条目，所有属性都按预期设置，但未更新的 [UpdatedOnUtc] 除外（它等于 [CreatedOnUtc]
我标记了更新的行（如您所见[FilePath]已成功更新）：
感谢社区见解，
谢谢
这是存储过程代码：
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[SP_ArrangeBackgroundTaskAttachtments]
(
@backgroundTaskId BIGINT,
@taskAttchs [dbo].[BackgroundTaskAttachtmentType] READONLY
)
AS
BEGIN
SET NOCOUNT ON;
--delete all removed attachtments
DELETE FROM [BackgroundTaskAttachtment]
WHERE [BackgroundTaskId] = @backgroundTaskId AND [Id] NOT IN (SELECT [Id] FROM @taskAttchs)
----Update exist key-value pairs
UPDATE [dbo].[BackgroundTaskAttachtment]
SET
[IsPrimary] = attachs.[IsPrimary],
[FilePath] = attachs.[FilePath],
[Bytes] = attachs.[Bytes],
[UpdatedOnUtc] = GETUTCDATE()
FROM @taskAttchs AS attachs
WHERE attachs.[Id] = [BackgroundTaskAttachtment].[Id]
--insert new records
SELECT @backgroundTaskId AS [BackgroundTaskId], [FilePath], [IsPrimary], [Bytes], GETUTCDATE() AS [CreatedOnUtc], GETUTCDATE() AS [UpdatedOnUtc]
INTO #Temp FROM @taskAttchs as atcs
WHERE atcs.[Id] NOT IN (SELECT [Id] FROM [BackgroundTaskAttachtment] AS bta WHERE bta.[BackgroundTaskId] = @backgroundTaskId )
INSERT INTO [BackgroundTaskAttachtment]([BackgroundTaskId], [IsPrimary], [Bytes], [FilePath], [CreatedOnUtc], [UpdatedOnUtc] )
SELECT [BackgroundTaskId], [IsPrimary], [Bytes], [FilePath], [CreatedOnUtc], [UpdatedOnUtc]
FROM #Temp
END
这是表类型（从 CLR 发送到 SQL）
CREATE TYPE [dbo].[BackgroundTaskAttachtmentType] AS TABLE(
[Id] [BIGINT] NOT NULL,
[FilePath] [NVARCHAR](MAX) NULL,
[IsPrimary] [BIT] NOT NULL,
[BackgroundTaskId] [BIGINT] NULL,
[Bytes] [VARBINARY](MAX) NULL
)
GO
这是表定义
CREATE TABLE [dbo].[BackgroundTaskAttachtment]
(
[Id] BIGINT IDENTITY(1,1) NOT NULL,
[BackgroundTaskId] BIGINT NOT NULL,
[IsPrimary] BIT NOT NULL DEFAULT 0,
[FilePath] NVARCHAR(MAX) NULL,
[Bytes] VARBINARY(MAX) NULL,
[CreatedOnUtc] DATETIME2 NOT NULL,
[UpdatedOnUtc] DATETIME2 NOT NULL,
[RowVersion] ROWVERSION NOT NULL,
CONSTRAINT [PK_dbo.BackgroundTaskAttachtment] PRIMARY KEY CLUSTERED ([Id] ASC),
CONSTRAINT [FK_dbo.BackgroundTaskAttachtment_BackgroundTask_Id]
FOREIGN KEY ([BackgroundTaskId])
REFERENCES [dbo].[BackgroundTask] ([Id])
ON DELETE CASCADE
);