在SQL Server 2005中，我可以在没有设置表格属性的情况下进行级联删除吗？

Question

我有一个数据库充满了客户数据。它太大了，操作起来真的很麻烦，我宁愿把它减少到10％的客户，这对发展来说是很大的。我有很多表，我不想用“ON DELETE CASCADE”来改变它们，特别是因为这是一次性交易。

我可以做一个删除操作，级联所有我的表而不先设置它们吗？如果不是，我最好的选择是什么？

Answer 1

结合您的建议和脚本我在网上找到，我做了会产生SQL可以运行执行级联删除不管ON DELETE CASCADE的过程。这可能是浪费时间，但我写了很好。这样做的好处在于，您可以在每行之间放置一条GO声明，并且它不一定是一个大事务。原来是一个递归过程;这一个将递归展开到一个堆栈表中。

create procedure usp_delete_cascade (
    @base_table_name varchar(200), @base_criteria nvarchar(1000) 
) 
as begin 
    -- Adapted from http://www.sqlteam.com/article/performing-a-cascade-delete-in-sql-server-7 
    -- Expects the name of a table, and a conditional for selecting rows 
    -- within that table that you want deleted. 
    -- Produces SQL that, when run, deletes all table rows referencing the ones 
    -- you initially selected, cascading into any number of tables, 
    -- without the need for "ON DELETE CASCADE". 
    -- Does not appear to work with self-referencing tables, but it will 
    -- delete everything beneath them. 
    -- To make it easy on the server, put a "GO" statement between each line. 

    declare @to_delete table (
     id int identity(1, 1) primary key not null, 
     criteria nvarchar(1000) not null, 
     table_name varchar(200) not null, 
     processed bit not null, 
     delete_sql varchar(1000) 
    ) 

    insert into @to_delete (criteria, table_name, processed) values (@base_criteria, @base_table_name, 0) 

    declare @id int, @criteria nvarchar(1000), @table_name varchar(200) 
    while exists(select 1 from @to_delete where processed = 0) begin 
     select top 1 @id = id, @criteria = criteria, @table_name = table_name from @to_delete where processed = 0 order by id desc 

     insert into @to_delete (criteria, table_name, processed) 
      select referencing_column.name + ' in (select [' + referenced_column.name + '] from [' + @table_name +'] where ' + @criteria + ')', 
       referencing_table.name, 
       0 
      from sys.foreign_key_columns fk 
       inner join sys.columns referencing_column on fk.parent_object_id = referencing_column.object_id 
        and fk.parent_column_id = referencing_column.column_id 
       inner join sys.columns referenced_column on fk.referenced_object_id = referenced_column.object_id 
        and fk.referenced_column_id = referenced_column.column_id 
       inner join sys.objects referencing_table on fk.parent_object_id = referencing_table.object_id 
       inner join sys.objects referenced_table on fk.referenced_object_id = referenced_table.object_id 
       inner join sys.objects constraint_object on fk.constraint_object_id = constraint_object.object_id 
      where referenced_table.name = @table_name 
       and referencing_table.name != referenced_table.name 

     update @to_delete set 
      processed = 1 
     where id = @id 
    end 

    select 'print ''deleting from ' + table_name + '...''; delete from [' + table_name + '] where ' + criteria from @to_delete order by id desc 
end 

exec usp_delete_cascade 'root_table_name', 'id = 123' 

Answer 2

我通常只是手写查询来删除我不想要的记录，并将其保存为.sql文件以供将来参考。伪代码：从主表，我想删除到一个临时表

写出每个相关表，加入到临时表中删除查询记录

1. 选择ID的。
2. 为连接到我的临时表的主表写入删除查询。

Answer 3

我的建议是继续编写一个脚本，该脚本会将删除层叠添加到数据库中的每个关系，同时导出修改关系的列表。然后，您可以反转该过程并删除列表中每个表上的on delete cascade命令。

Answer 4

就个人而言，如果你要离开生产记录，我也会留下他们的发展。否则，你可能会编写在记录集很小时工作正常但在遇到真实记录集时超时的代码。

但是，如果您决定这样做，我会首先将要从主表中删除的记录的id字段复制到工作表中。然后，我将把每个相关表格写入一个删除连接到该工作表，以仅删除这些记录。用父表完成。确保将这些内容写入脚本并在下次希望与测试数据做类似的事情时进行保存，您可以轻松运行它，而无需弄清楚需要从中删除记录的重复表是什么。

Answer 5

进入SQL Server Management Studio并右键单击该数据库。选择任务 - >生成脚本。点击下一步两次。在“选项”窗口中，选择将其设置为仅生成CREATE语句，并将所有内容都设置为除外部键之外的False。点击下一步。选择表格并再次单击下一步。单击“全选”按钮，然后单击下一步然后单击完成并将脚本发送到您选择的查询窗口或文件（不要使用剪贴板，因为它可能是一个大脚本）。 现在删除所有添加表的脚本，并且应该留下脚本来创建您的外键。

制作该脚本的副本，因为这是您将数据库还原到当前状态的方式。使用搜索和替换将ON DELETE CASCADE添加到每个约束的末尾。这可能会有所不同，这取决于您的FK目前如何设置，您可能需要进行一些手动编辑。

重复脚本生成，但是这次只设置它只生成DROP语句。 一定要手动删除生成的表滴。运行下拉菜单，然后运行已编辑的创建，使它们全部级联删除。执行删除操作，再次运行drop脚本，然后运行在开始时保存的脚本。

另外 - 做你的数据库第一的备份！即使它只是一个开发数据库，​​如果脚本的一部分不完全正确，它也会为您节省一些头痛。

希望这会有所帮助！顺便提一下，你应该使用完整的测试数据做一些测试，但是我可以看到为什么你可能不需要这些测试来进行初始开发。只要不要忘记将其作为质量保证的一部分。

Answer 6

除非您想维护Chris提出的所有相关查询，否则ON DELETE CASCADE是迄今最快和最直接的解决方案。如果你不希望它是永久性的，你为什么不有一些T-SQL代码，将打开和关闭喜欢这里

1. 删除原始Tbl_A_MyFK约束（不ON DELETE该选项CASCADE）

   ALTER TABLE Tbl_A DROP CONSTRAINT Tbl_A_MyFK

2. 设置约束Tbl_A_MyFK与ON DELETE CASCADE

   ALTER TABLE Tbl_A ADD CONSTRAINT Tbl_A_MyFK FOREIGN KEY (MyFK) REFERENCES Tbl_B(Column) ON DELETE CASCADE

3. 在这里你可以做你删除

   DELETE FROM Tbl_A WHERE ...

4. 放下你的约束Tbl_A_MyFK

   ALTER TABLE Tbl_A DROP CONSTRAINT Tbl_A_MyFK

5. 设置约束Tbl_A_MyFK没有ON DELETE CASCADE

   ALTER TABLE Tbl_A ADD CONSTRAINT Tbl_A_MyFK FOREIGN KEY (MyFK) REFERENCES (Tbl_B)

Answer 7

后，选择你必须建立并执行实际删除

declare @deleteSql nvarchar(1200) 
declare delete_cursor cursor for 
select table_name, criteria 
from @to_delete 
order by id desc 

open delete_cursor 

fetch next from delete_cursor 
into @table_name, @criteria 

while @@fetch_status = 0 
begin 
select @deleteSql = 'delete from ' + @table_name + ' where ' + @criteria 
--print @deleteSql 
-- exec sp_execute @deleteSql 
EXEC SP_EXECUTESQL @deleteSql 

fetch next from delete_cursor 
into @table_name, @criteria 
end 
close delete_cursor 
deallocate delete_cursor 

Answer 8

以接受的答案远一点，我有必要在不同的模式来做到这一点跨表。我已更新脚本以在输出的删除脚本中包含模式。

CREATE PROCEDURE usp_delete_cascade (
     @base_table_schema varchar(100), @base_table_name varchar(200), @base_criteria nvarchar(1000) 
) 
as begin 

     -- Expects the name of a table, and a conditional for selecting rows 
     -- within that table that you want deleted. 
     -- Produces SQL that, when run, deletes all table rows referencing the ones 
     -- you initially selected, cascading into any number of tables, 
     -- without the need for "ON DELETE CASCADE". 
     -- Does not appear to work with self-referencing tables, but it will 
     -- delete everything beneath them. 
     -- To make it easy on the server, put a "GO" statement between each line. 

     declare @to_delete table (
       id int identity(1, 1) primary key not null, 
       criteria nvarchar(1000) not null, 
       table_schema varchar(100), 
       table_name varchar(200) not null, 
       processed bit not null, 
       delete_sql varchar(1000) 
     ) 

     insert into @to_delete (criteria, table_schema, table_name, processed) values (@base_criteria, @base_table_schema, @base_table_name, 0) 

     declare @id int, @criteria nvarchar(1000), @table_name varchar(200), @table_schema varchar(100) 
     while exists(select 1 from @to_delete where processed = 0) begin 
       select top 1 @id = id, @criteria = criteria, @table_name = table_name, @table_schema = table_schema from @to_delete where processed = 0 order by id desc 

       insert into @to_delete (criteria, table_schema, table_name, processed) 
         select referencing_column.name + ' in (select [' + referenced_column.name + '] from [' + @table_schema + '].[' + @table_name +'] where ' + @criteria + ')', 
           schematable.name, 
           referencing_table.name, 
           0 
         from sys.foreign_key_columns fk 
           inner join sys.columns referencing_column on fk.parent_object_id = referencing_column.object_id 
             and fk.parent_column_id = referencing_column.column_id 
           inner join sys.columns referenced_column on fk.referenced_object_id = referenced_column.object_id 
             and fk.referenced_column_id = referenced_column.column_id 
           inner join sys.objects referencing_table on fk.parent_object_id = referencing_table.object_id 
           inner join sys.schemas schematable on referencing_table.schema_id = schematable.schema_id 
           inner join sys.objects referenced_table on fk.referenced_object_id = referenced_table.object_id 
           inner join sys.objects constraint_object on fk.constraint_object_id = constraint_object.object_id 
         where referenced_table.name = @table_name 
           and referencing_table.name != referenced_table.name 

       update @to_delete set 
         processed = 1 
       where id = @id 
     end 

     select 'print ''deleting from ' + table_name + '...''; delete from [' + table_schema + '].[' + table_name + '] where ' + criteria from @to_delete order by id desc 
end 

exec usp_delete_cascade 'schema', 'RootTable', 'Id = 123' 
exec usp_delete_cascade 'schema', 'RootTable', 'GuidId = ''A7202F84-FA57-4355-B499-1F8718E29058''' 

Answer 9

凯文职位是不完整的，他的T-SQL SP只打印命令，执行这些命令，最后末尾添加此

DECLARE @commandText VARCHAR(8000) 
     DECLARE curDeletes CURSOR FOR 
      select 'delete from [' + table_name + '] where ' + criteria from @to_delete order by id desc 

     OPEN curDeletes 
     FETCH NEXT FROM curDeletes 
     INTO 
      @commandText 

     WHILE(@@FETCH_STATUS=0) 
     BEGIN 
      EXEC (@commandText) 
      FETCH NEXT FROM curDeletes INTO @commandText 
     END 
     CLOSE curDeletes 
     DEALLOCATE curDeletes 

Answer 10

之前，这里有一个人口稀少的优化版本接受的答案的数据模型。它在将它添加到删除列表之前检查FK链中是否存在数据。我用它来清理测试数据。

不要在活动的事务性数据库中使用它 - 它会锁住太长时间。

/* 
-- ============================================================================ 
-- Purpose: Performs a cascading hard-delete. 
--   Not for use on an active transactional database- it holds locks for too long. 
--   (http://stackoverflow.com/questions/116968/in-sql-server-2005-can-i-do-a-cascade-delete-without-setting-the-property-on-my) 
-- eg: 
exec dbo.hp_Common_Delete 'tblConsumer', 'Surname = ''TestDxOverdueOneReviewWm''', 1 
-- ============================================================================ 
*/ 
create proc [dbo].[hp_Common_Delete] 
(
    @TableName sysname, 
    @Where nvarchar(4000), -- Shouldn't include 'where' keyword, e.g. Surname = 'smith', NOT where Surname = 'smith' 
    @IsDebug bit = 0 
) 
as 
set nocount on 

begin try 
    -- Prepare tables to store deletion criteria. 
    -- #tmp_to_delete stores criteria that is tested for results before being added to #to_delete 
    create table #to_delete 
    (
     id int identity(1, 1) primary key not null, 
     criteria nvarchar(4000) not null, 
     table_name sysname not null, 
     processed bit not null default(0) 
    ) 
    create table #tmp_to_delete 
    (
     id int primary key identity(1,1), 
     criteria nvarchar(4000) not null, 
     table_name sysname not null 
    ) 

    -- Open a transaction (it'll be a long one- don't use this on production!) 
    -- We need a transaction around criteria generation because we only 
    -- retain criteria that has rows in the db, and we don't want that to change under us. 
    begin tran 
     -- If the top-level table meets the deletion criteria, add it 
     declare @Sql nvarchar(4000) 
     set @Sql = 'if exists(select top(1) * from ' + @TableName + ' where ' + @Where + ') 
      insert #to_delete (criteria, table_name) values (''' + replace(@Where, '''', '''''') + ''', ''' + @TableName + ''')' 
     exec (@Sql) 

     -- Loop over deletion table, walking foreign keys to generate delete targets 
     declare @id int, @tmp_id int, @criteria nvarchar(4000), @new_criteria nvarchar(4000), @table_name sysname, @new_table_name sysname 
     while exists(select 1 from #to_delete where processed = 0) 
     begin 
      -- Grab table/criteria to work on 
      select top(1) @id = id, 
        @criteria = criteria, 
        @table_name = table_name 
      from #to_delete 
      where processed = 0 
      order by id desc 

      -- Insert all immediate child tables into a temp table for processing 
      insert #tmp_to_delete 
      select referencing_column.name + ' in (select [' + referenced_column.name + '] from [' + @table_name +'] where ' + @criteria + ')', 
        referencing_table.name 
      from sys.foreign_key_columns fk 
        inner join sys.columns referencing_column on fk.parent_object_id = referencing_column.object_id 
          and fk.parent_column_id = referencing_column.column_id 
        inner join sys.columns referenced_column on fk.referenced_object_id = referenced_column.object_id 
          and fk.referenced_column_id = referenced_column.column_id 
        inner join sys.objects referencing_table on fk.parent_object_id = referencing_table.object_id 
        inner join sys.objects referenced_table on fk.referenced_object_id = referenced_table.object_id 
        inner join sys.objects constraint_object on fk.constraint_object_id = constraint_object.object_id 
      where referenced_table.name = @table_name 
        and referencing_table.name != referenced_table.name 

      -- Loop on child table criteria, and insert them into delete table if they have records in the db 
      select @tmp_id = max(id) from #tmp_to_delete 
      while (@tmp_id >= 1) 
      begin 
       select @new_criteria = criteria, @new_table_name = table_name from #tmp_to_delete where id = @tmp_id 
       set @Sql = 'if exists(select top(1) * from ' + @new_table_name + ' where ' + @new_criteria + ') 
        insert #to_delete (criteria, table_name) values (''' + replace(@new_criteria, '''', '''''') + ''', ''' + @new_table_name + ''')' 
       exec (@Sql) 

       set @tmp_id = @tmp_id - 1 
      end 
      truncate table #tmp_to_delete 

      -- Move to next record 
      update #to_delete 
      set  processed = 1 
      where id = @id 
     end 

     -- We have a list of all tables requiring deletion. Actually delete now. 
     select @id = max(id) from #to_delete 
     while (@id >= 1) 
     begin 
      select @criteria = criteria, @table_name = table_name from #to_delete where id = @id 
      set @Sql = 'delete from [' + @table_name + '] where ' + @criteria 
      if (@IsDebug = 1) print @Sql 
      exec (@Sql) 

      -- Next record 
      set @id = @id - 1 
     end 
    commit 
end try 

begin catch 
    -- Any error results in a rollback of the entire job 
    if (@@trancount > 0) rollback 

    declare @message nvarchar(2047), @errorProcedure nvarchar(126), @errorMessage nvarchar(2048), @errorNumber int, @errorSeverity int, @errorState int, @errorLine int 
    select @errorProcedure = isnull(error_procedure(), N'hp_Common_Delete'), 
      @errorMessage = isnull(error_message(), N'hp_Common_Delete unable to determine error message'), 
      @errorNumber = error_number(), @errorSeverity = error_severity(), @errorState = error_state(), @errorLine = error_line() 

    -- Prepare error information as it would be output in SQL Mgt Studio 
    declare @event nvarchar(2047) 
    select @event = 'Msg ' + isnull(cast(@errorNumber as varchar), 'null') + 
         ', Level ' + isnull(cast(@errorSeverity as varchar), 'null') + 
         ', State ' + isnull(cast(@errorState as varchar), 'null') + 
         ', Procedure ' + isnull(@errorProcedure, 'null') + 
         ', Line ' + isnull(cast(@errorLine as varchar), 'null') + 
         ': ' + isnull(@errorMessage, '@ErrorMessage null') 
    print @event 

    -- Re-raise error to ensure admin/job runners understand there was a failure 
    raiserror(@errorMessage, @errorSeverity, @errorState) 
end catch 

Answer 11

croisharp的回答扩张采取触发器考虑，即禁止所有影响触发器，删除行，并启用触发器，即感知模式的解决方案。

CREATE PROCEDURE usp_delete_cascade (
@base_table_schema varchar(100), 
@base_table_name varchar(200), 
@base_criteria nvarchar(1000) 
) 
as begin 

    -- Expects the name of a table, and a conditional for selecting rows 
    -- within that table that you want deleted. 
    -- Produces SQL that, when run, deletes all table rows referencing the ones 
    -- you initially selected, cascading into any number of tables, 
    -- without the need for "ON DELETE CASCADE". 
    -- Does not appear to work with self-referencing tables, but it will 
    -- delete everything beneath them. 
    -- To make it easy on the server, put a "GO" statement between each line. 

    declare @to_delete table (
      id int identity(1, 1) primary key not null, 
      criteria nvarchar(1000) not null, 
      table_schema varchar(100), 
      table_name varchar(200) not null, 
      processed bit not null, 
      delete_sql varchar(1000) 
    ) 

    insert into @to_delete (criteria, table_schema, table_name, processed) values (@base_criteria, @base_table_schema, @base_table_name, 0) 

    declare @id int, @criteria nvarchar(1000), @table_name varchar(200), @table_schema varchar(100) 
    while exists(select 1 from @to_delete where processed = 0) begin 
      select top 1 @id = id, @criteria = criteria, @table_name = table_name, @table_schema = table_schema from @to_delete where processed = 0 order by id desc 

      insert into @to_delete (criteria, table_schema, table_name, processed) 
        select referencing_column.name + ' in (select [' + referenced_column.name + '] from [' + @table_schema + '].[' + @table_name +'] where ' + @criteria + ')', 
          schematable.name, 
          referencing_table.name, 
          0 
        from sys.foreign_key_columns fk 
          inner join sys.columns referencing_column on fk.parent_object_id = referencing_column.object_id 
            and fk.parent_column_id = referencing_column.column_id 
          inner join sys.columns referenced_column on fk.referenced_object_id = referenced_column.object_id 
            and fk.referenced_column_id = referenced_column.column_id 
          inner join sys.objects referencing_table on fk.parent_object_id = referencing_table.object_id 
          inner join sys.schemas schematable on referencing_table.schema_id = schematable.schema_id 
          inner join sys.objects referenced_table on fk.referenced_object_id = referenced_table.object_id 
          inner join sys.objects constraint_object on fk.constraint_object_id = constraint_object.object_id 
        where referenced_table.name = @table_name 
          and referencing_table.name != referenced_table.name 

      update @to_delete set 
        processed = 1 
      where id = @id 
    end 

    select 'print ''deleting from ' + table_name + '...''; delete from [' + table_schema + '].[' + table_name + '] where ' + criteria from @to_delete order by id desc 

    DECLARE @commandText VARCHAR(8000), @triggerOn VARCHAR(8000), @triggerOff VARCHAR(8000) 
    DECLARE curDeletes CURSOR FOR 
     select 
      'DELETE FROM [' + table_schema + '].[' + table_name + '] WHERE ' + criteria, 
      'ALTER TABLE [' + table_schema + '].[' + table_name + '] DISABLE TRIGGER ALL', 
      'ALTER TABLE [' + table_schema + '].[' + table_name + '] ENABLE TRIGGER ALL' 
     from @to_delete order by id desc 

    OPEN curDeletes 
    FETCH NEXT FROM curDeletes INTO @commandText, @triggerOff, @triggerOn 

    WHILE(@@FETCH_STATUS=0) 
    BEGIN 
     EXEC (@triggerOff) 
     EXEC (@commandText) 
     EXEC (@triggerOn) 
     FETCH NEXT FROM curDeletes INTO @commandText, @triggerOff, @triggerOn 
    END 
    CLOSE curDeletes 
    DEALLOCATE curDeletes 
end 

Answer 12

这个脚本有两个问题：1。 必须注明条件1 = 1，以删除所有表的基础。 2.这只创建与基表的直接关系。如果最终的表具有另一个表父关系时，删除失败

DELETE FROM [DBO]。[表2] WHERE表格ID中（选择[ID]从[DBO]。[表3]，其中1 = 1）

如果表2有一个父关系表1

Answer 13

这里发布一个脚本，该脚本将与外键一起使用，该脚本包含多个列。

create procedure usp_delete_cascade (
@TableName varchar(200), @Where nvarchar(1000) 
) as begin 

declare @to_delete table (
    id int identity(1, 1) primary key not null, 
    criteria nvarchar(1000) not null, 
    table_name varchar(200) not null, 
    processed bit not null default(0), 
    delete_sql varchar(1000) 
) 
      DECLARE @MyCursor CURSOR 

declare   @referencing_column_name varchar(1000) 
declare   @referencing_table_name varchar(1000) 
declare @Sql nvarchar(4000) 
insert into @to_delete (criteria, table_name) values ('', @TableName) 


declare @id int, @criteria nvarchar(1000), @table_name varchar(200) 
while exists(select 1 from @to_delete where processed = 0) begin 
    select top 1 @id = id, @criteria = criteria, @table_name = table_name from @to_delete where processed = 0 order by id desc 
     SET @MyCursor = CURSOR FAST_FORWARD 
     FOR 
     select referencing_column.name as column_name, 
      referencing_table.name as table_name 
     from sys.foreign_key_columns fk 
      inner join sys.columns referencing_column on fk.parent_object_id = referencing_column.object_id 
       and fk.parent_column_id = referencing_column.column_id 
      inner join sys.columns referenced_column on fk.referenced_object_id = referenced_column.object_id 
       and fk.referenced_column_id = referenced_column.column_id 
      inner join sys.objects referencing_table on fk.parent_object_id = referencing_table.object_id 
      inner join sys.objects referenced_table on fk.referenced_object_id = referenced_table.object_id 
      inner join sys.objects constraint_object on fk.constraint_object_id = constraint_object.object_id 
     where referenced_table.name = @table_name 
      and referencing_table.name != referenced_table.name 

     OPEN @MyCursor 
     FETCH NEXT FROM @MYCursor 
     INTO @referencing_column_name, @referencing_table_name 

     WHILE @@FETCH_STATUS = 0 

     BEGIN 
      PRINT @referencing_column_name 
      PRINT @referencing_table_name 
        update @to_delete set criteria = criteria + ' AND '+@table_name+'.'+@referencing_column_name+'='+ @referencing_table_name+'.'+@referencing_column_name 
        where table_name = @referencing_table_name 

        if(@@ROWCOUNT = 0) 
        BEGIN 
          --if(@id <> 1) 
          --BEGIN 
           insert into @to_delete (criteria, table_name) 
           VALUES(' LEFT JOIN '+@table_name+' ON '+@table_name+'.'+@referencing_column_name+'='+ @referencing_table_name+'.'+@referencing_column_name+ @criteria, 
           @referencing_table_name 
           ) 
          --END 
          --ELSE 
          --BEGIN 
           --insert into @to_delete (criteria, table_name) 
           --VALUES(' LEFT JOIN '+@table_name+' ON '+@table_name+'.'+@referencing_column_name+'='+ @referencing_table_name+'.'+@referencing_column_name, 
           --@referencing_table_name 
           --) 
          --END 
        END 
         FETCH NEXT FROM @MYCursor 
      INTO @referencing_column_name, @referencing_table_name 
     END 


     CLOSE @MyCursor 
     DEALLOCATE @MyCursor 
    update @to_delete set 
     processed = 1 
    where id = @id 
end 

--select 'print ''deleting from ' + table_name + '...''; delete from [' + table_name + '] where ' + criteria from @to_delete order by id desc 

--select id, table_name, criteria, @Where from @to_delete order by id desc 

select @id = max(id) from @to_delete 
while (@id >= 1) 
begin 
    select @criteria = criteria, @table_name = table_name from @to_delete where id = @id 
    set @Sql = 'delete [' + @table_name + '] from [' + @table_name + '] ' + @criteria+' WHERE '+@Where 
    exec (@Sql) 
    PRINT @Sql 

    -- Next record 
    set @id = @id - 1 
end 
end