何查复制declare @tablename sysname declare @strsql nchar(500) declare tableNameCursor cursor for select b.name from sysobjects b where xtype=U and b.name not in (select object_name(a.parent_obj) from sysobjects a where xtype=PK ) open tableNameCursor fetch next from tableNameCursor into @tablename while @@FETCH_STATUS = 0 begin print @tablename set @strsql= alter table + @tablename + add primary key (id) print @strsql exec (@strsql) fetch next from tableNameCursor into @tablename end close tableNameCursor deallocate tableNameCursor 1.2.3.4.5.6.7.8.9.10.11.12.13.14.15.16.17.18.19.20.21.22.23.24.25.26.27.28.29.30.31.32.33.