Error validating the default for column id newsequentialid avan dating zoey

Limiting it to default values and not allowing it to participate in expressions is just absurd.

error validating the default for column id newsequentialid-14

Error validating the default for column id newsequentialid sweden interracial dating

It succeeded without errors; however, when I reentered the design view and tried to set the column as a 'unique key' index, upon saving the table I got the message: "Error validating the default for column XYZ. ", exactly as described here: There is no reason why I shouldn't be able to call "select newsequentialid()" just as I can call "select newid()".

No one seems to understand why this restriction is in place, and why we have to resort to using temporary table just to acquire a new sequential id.

This issue has been fixed in internal builds and will be available in next major release of SQL Server "Denali".

It's NOT fixed in SQL 2012 (Denali) - so, what has happened to the fix for what must rank as one of the most inane bugs I experience daily.

1.:newsequentialid 函数比起 newid 函数最大的好处是:如果你在一个 UNIQUEIDENTIFIER 字段上建立索引,使用 newid 产生的新的值是不固定的,所以新的值导致索引B 树的变化是随机的。而 newsequentialid 产生的新的值是有规律的,则索引B 树的变化是有规律的。有规律和无规律就会带来性能的改进。 2: UNIQUEIDENTIFIER做主键(Primary Key)是一件很方便的事情,在数据合并等操作中有不可替代的优势 但是由于普通的GUID的分散性使得如果主键加上聚集索引(Clustered Index)会导致在插入记录时效率大大降低 SQL SERVER 2005中新增了一个NEWSEQUENTIALID的函数,MSDN的解释是: 在指定计算机上创建大于先前通过该函数生成的任何 GUID 的 GUID。 NEWSEQUENTIALID() 不能在查询中引用。您可以使用 NEWSEQUENTIALID() 生成 GUID 以减少叶级别索引上的页争用。 使用例子: create table #dd ( fid uniqueidentifier NULL DEFAULT (NEWSEQUENTIALID()), fname [nvarchar](20)) insert into #dd(fname)values('dddff') select * from #dd where fid 2.