すべてのテーブルで 2 つの列を使用することをお勧めします。rowhistoryとIsDeletedという名前が付けられ、データ型は xml と bit になります。
行を削除せず、常に IsDeleted フラグを使用
します。更新トリガーを使用します。同じ例を挙げます Page と呼ばれるこの1つのテーブルがあります
CREATE TABLE te_Page([Id] [int] IDENTITY(1,1) NOT NULL, [Name] [varchar](200) NOT NULL, [Description] [varchar](200) NULL,[CreatedBy] [uniqueidentifier] NULL, [CreatedDate] [datetime] NOT NULL, [UpdatedBy] [uniqueidentifier] NULL, [UpdatedDate] [datetime] NULL, [IsDeleted] [bit] NULL, [RowHistory] [xml] NULL, CONSTRAINT [PK_tm_Page] PRIMARY KEY CLUSTERED ([Id] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] ) ON [PRIMARY]
テーブルを作成したら、次のコードをコピーして貼り付けるだけで、Page テーブルのタスクは完了です。古い値と新しい値とともに更新される同じ行の行の履歴の記録を開始します。
ALTER Trigger [dbo].[Trg_Te_Page]
On [dbo].[te_Page]
After Update
As
--If @@rowcount = 0 Or Update(RowHistory)
--Return
Declare @xml NVARCHAR(MAX)
Declare @currentxml NVARCHAR(MAX)
Declare @node NVARCHAR(MAX)
Declare @ishistoryexists XML
Declare @FormLineAttributeValueId int
-- new Values
Declare @new_Name varchar(200)
Declare @new_Description varchar(200)
Declare @new_CreatedBy UNIQUEIDENTIFIER
Declare @new_CreatedDate DATETIME
Declare @new_UpdatedBy UNIQUEIDENTIFIER
Declare @new_UpdatedDate DATETIME
Declare @new_IsDeleted BIT
--old values
Declare @old_Name varchar(200)
Declare @old_Description varchar(200)
Declare @old_CreatedBy UNIQUEIDENTIFIER
Declare @old_CreatedDate DATETIME
Declare @old_UpdatedBy UNIQUEIDENTIFIER
Declare @old_UpdatedDate DATETIME
Declare @old_IsDeleted BIT
-- declare temp fmId
Declare @fmId int
-- declare cursor
DECLARE curFormId cursor
FOR select Id from INSERTED
-- open cursor
OPEN curFormId
-- fetch row
FETCH NEXT FROM curFormId INTO @fmId
WHILE @@FETCH_STATUS = 0
BEGIN
Select
@FormLineAttributeValueId = Id,
@old_Name = Name,
@old_Description = [Description],
@old_CreatedBy = CreatedBy,
@old_CreatedDate =CreatedDate,
@old_UpdatedBy =UpdatedBy,
@old_UpdatedDate =UpdatedDate,
@old_IsDeleted = IsDeleted,
@currentxml = cast(RowHistory as NVARCHAR(MAX))
From DELETED where Id=@fmId
Select
@new_Name = Name,
@new_Description = [Description],
@new_CreatedBy = CreatedBy,
@new_CreatedDate =CreatedDate,
@new_UpdatedBy =UpdatedBy,
@new_UpdatedDate =UpdatedDate,
@new_IsDeleted = IsDeleted
From INSERTED where Id=@fmId
set @old_Name = Replace(@old_Name,'&','&')
set @old_Name = Replace(@old_Name,'>','>')
set @old_Name = Replace(@old_Name,'<','<')
set @old_Name = Replace(@old_Name,'"','"')
set @old_Name = Replace(@old_Name,'''',''')
set @new_Name = Replace(@new_Name,'&','&')
set @new_Name = Replace(@new_Name,'>','>')
set @new_Name = Replace(@new_Name,'<','<')
set @new_Name = Replace(@new_Name,'"','"')
set @new_Name = Replace(@new_Name,'''',''')
set @old_Description = Replace(@old_Description,'&','&')
set @old_Description = Replace(@old_Description,'>','>')
set @old_Description = Replace(@old_Description,'<','<')
set @old_Description = Replace(@old_Description,'"','"')
set @old_Description = Replace(@old_Description,'''',''')
set @new_Description = Replace(@new_Description,'&','&')
set @new_Description = Replace(@new_Description,'>','>')
set @new_Description = Replace(@new_Description,'<','<')
set @new_Description = Replace(@new_Description,'"','"')
set @new_Description = Replace(@new_Description,'''',''')
set @xml = ''
BEGIN
-- for Name
If ltrim(rtrim(IsNull(@new_Name,''))) != ltrim(rtrim(IsNull(@old_Name,'')))
set @xml = @xml + '<ColumnInfo ColumnName="Name" OldValue="'+ @old_Name + '" NewValue="' + @new_Name + '"/>'
-- for Description
If ltrim(rtrim(IsNull(@new_Description,''))) != ltrim(rtrim(IsNull(@old_Description,'')))
set @xml = @xml + '<ColumnInfo ColumnName="Description" OldValue="'+ @old_Description + '" NewValue="' + @new_Description + '"/>'
-- CreatedDate
If IsNull(@new_CreatedDate,'') != IsNull(@old_CreatedDate,'')
set @xml = @xml + '<ColumnInfo ColumnName="CreatedDate" OldValue="'+ cast(isnull(@old_CreatedDate,'') as varchar(100)) + '" NewValue="' + cast(isnull(@new_CreatedDate,'') as varchar(100)) + '"/>'
-- CreatedBy
If cast(IsNull(@new_CreatedBy,'00000000-0000-0000-0000-000000000000')as varchar (36)) != cast(IsNull(@old_CreatedBy,'00000000-0000-0000-0000-000000000000')as varchar(36))
set @xml = @xml + '<ColumnInfo ColumnName="CreatedBy" OldValue="'+ cast(IsNull(@old_CreatedBy,'00000000-0000-0000-0000-000000000000') as varchar(36)) + '" NewValue="' + cast(isnull(@new_CreatedBy,'00000000-0000-0000-0000-000000000000') as varchar(36))+
'"/>'
-- UpdatedDate
If IsNull(@new_UpdatedDate,'') != IsNull(@old_UpdatedDate,'')
set @xml = @xml + '<ColumnInfo ColumnName="UpdatedDate" OldValue="'+ cast(IsNull(@old_UpdatedDate,'') as varchar(100)) + '" NewValue="' + cast(IsNull(@new_UpdatedDate,'') as varchar(100)) + '"/>'
-- UpdatedBy
If cast(IsNull(@new_UpdatedBy,'00000000-0000-0000-0000-000000000000') as varchar(36)) != cast(IsNull(@old_UpdatedBy,'00000000-0000-0000-0000-000000000000') as varchar(36))
set @xml = @xml + '<ColumnInfo ColumnName="UpdatedBy" OldValue="'+ cast(IsNull(@old_UpdatedBy,'00000000-0000-0000-0000-000000000000') as varchar(36)) + '" NewValue="' + cast(IsNull(@new_UpdatedBy,'00000000-0000-0000-0000-000000000000') as varchar(36))+
'"/>'
-- IsDeleted
If cast(IsNull(@new_IsDeleted,'') as varchar(10)) != cast(IsNull(@old_IsDeleted,'') as varchar(10))
set @xml = @xml + '<ColumnInfo ColumnName="IsDeleted" OldValue="'+ cast(IsNull(@old_IsDeleted,'') as varchar(10)) + '" NewValue="' + cast(IsNull(@new_IsDeleted,'') as varchar(10)) + '" />'
END
Set @xml = '<RowInfo TableName="te_Page" UpdatedBy="' + cast(IsNull(@new_UpdatedBy,'00000000-0000-0000-0000-000000000000') as varchar(50)) + '" UpdatedDate="' + Convert(Varchar(20),GetDate()) + '">' + @xml + '</RowInfo>'
Select @ishistoryexists = RowHistory From DELETED
--print @ishistoryexists
If @ishistoryexists is null
Begin
Set @xml = '<History>' + @xml + '</History>'
Update te_Page
Set
RowHistory = @xml
Where
Id = @FormLineAttributeValueId
End
Else
Begin
set @xml = REPLACE(@currentxml, '<History>', '<History>' + @xml)
Update te_Page
Set
RowHistory = @xml
Where
Id = @FormLineAttributeValueId
End
FETCH NEXT FROM curFormId INTO @fmId
END
CLOSE curFormId
DEALLOCATE curFormId
更新を実行するたびに、データはrowhistory列に保存されます