查询重复记录
查询重复记录 if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[p_qry]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[p_qry]
GO
/*--查询重复记录的通用存储过程
可以查询出表中那些数据是重复的,这里的重复,是指除主键外重复的记录
如果表中有主键,请指定主键.
如果表中有标识字段,而且标识字段无重复,请在调用时,将主键指定为标识字段
如果标识字段重复,不能用此存储过程
-- 2004.4--*/
create proc p_qry
@tbname sysname, --要查询的表名
@keyfdname sysname=null --表中的主键,如果未指定,则表中无主键
as
declare @nokey bit,@fd varchar(8000),@tj varchar(8000)
set nocount on
if isnull(@keyfdname,'')=''
begin
select @keyfdname=cast(newid() as char(36)),@nokey=1
exec('alter table ['+@tbname+'] add ['+@keyfdname+'] decimal(38,0) identity(1,1)')
end
select @fd='',@tj=''
select @fd=@fd+',['+name+']'
,@tj=@tj+'['+name+']=a.['+name+'] and '
from syscolumns
where object_name(id)=@tbname and name<>@keyfdname
set @fd=substring(@fd,2,8000)
exec('select '+@fd+' from ['+@tbname+'] a
where exists(select 1 from ['+@tbname
+'] where [url=mailto:]a.['+@keyfdname+'])'"'+@tj+'['+@keyfdname+']<>a.['+@keyfdname+'])')if @nokey=1 exec('alter table ['+@tbname+'] drop column ['+@keyfdname+']')set nocount off go--调用示例--创建测试数据create table 表(f1 int,f2 int,f3 int,f4 int,f5 int)insert into 表select 1,1,1,1,1union all select 2,1,1,1,1union all select 3,2,1,23,1union all select 4,2,3,1,3union all select 5,1,1,1,1go--调用通用存储过程实现楼主的查询exec p_qry '表','f1'--删除测试环境drop table 表/*--测试结果f2 f3 f4 f5 ----------- ----------- ----------- ----------- 1 1 1 11 1 1 11 1 1 1--*/
