删除数据库中的数据.

1,删除数据库中的记录(在存储过程中的代码):

ALTER PROCEDURE USP_ClearAllCurrentDB

AS

    begin

    EXEC sp_MSForEachTable 'ALTER TABLE ? NOCHECK CONSTRAINT ALL'    

    EXEC sp_MSForEachTable 'ALTER TABLE ? DISABLE TRIGGER ALL'    

    EXEC sp_MSForEachTable 'DELETE FROM ?'   

    EXEC sp_MSForEachTable 'ALTER TABLE ? CHECK CONSTRAINT ALL'    

    EXEC sp_MSForEachTable 'ALTER TABLE ? ENABLE TRIGGER ALL'

 end

 2,删除某数据库中所有表(存储过程中):

SET NOCOUNT ON   

    --删除外键约束.   

    declare cur  cursor for     

    select 'alter table ['+ object_name(parent_obj) + ' ] drop constraint [' + name + '] ' from sysobjects where xtype = 'F'     

    open cur     

    declare @cur nvarchar(4000)     

    fetch next from cur into @cur     

    while @@fetch_status = 0       

        begin       

        exec(@cur)        

        fetch next from cur into @cur        

        end        

    close cur        

    deallocate cur        

    --删除表.     

    declare @T_Name nvarchar(4000)    

    set @T_Name = ''    

    select @T_Name = @T_Name +name +','  from sysobjects where xtype = 'U'     

    select @T_Name = 'drop table '+ left(@T_Name,len(@T_Name) - 1)    --这里@T_Name会以','结尾.    

    exec(@T_Name)

 

 

ref: http://stackoverflow.com/questions/3372213/how-to-delete-or-truncate-table-in-sql-server