用sql语句更改自动编号的字段重新重'1'开始编号
tableName(id,clcode,cloth) id字段为identity(int,1,1) 重建id
select * into #aa from tableName
truncate table tableName
dbcc checkident(tableName,reseed,0)
set IDENTITY_INSERT ON
insert tableName(clcode,clname) select clcode,clname from #aa
//注意不能选择id列
drop table #aa
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