可以应用于2种场景:
1.清空所有表中的数据,数据清空后,最好是能够让表中的标识列从1开始记数,所以要重置标识列的当前值。
2.用复制的方式,发布订阅同步数据之后,订阅端的数据不会自动增长,比如自增ID该9527了,但如果中间有跳过的ID,会自动填充缺失的路过的ID,该执行如下代码,即可从应该的9527开始增长。
declare @tablename varchar(50) declare @sql varchar(1000) declare cur cursor for select name from sys.tables open cur fetch next from cur into @tablename while @@fetch_status=0 begin set @sql='if (select count(1) from '+@tablename+')<=0 and exists(select * from sys.columns where is_identity=1 and object_id=object_id('''+@tablename+''')) begin --dbcc checkident('+@tablename+',reseed,1) dbcc checkident('+@tablename+',reseed) end' exec (@sql) fetch next from cur into @tablename end close cur deallocate cur
测试过没有问题的
--已经测试没有问题的生成有标识列(自增ID)的表名 declare @tablename varchar(50) declare @sql varchar(1000) declare @objiecid int declare cur cursor for select object_id from sys.columns where is_identity=1 open cur fetch next from cur into @objiecid while @@fetch_status=0 begin select @tablename=name from sys.tables where object_id=@objiecid --print @tablename print 'dbcc checkident('''+@tablename+''',reseed)' fetch next from cur into @objiecid end close cur deallocate cur