mssql2005,2008导出数据字典实现方法

SELECT
(case when a.colorder=1 then d.name else end)表名,d.xtype as 表类型,
a.colorder 字段序号,
a.name 字段名,
(case when COLUMNPROPERTY( a.id,a.name,IsIdentity)=1 then √else end) 标识,
(case when (SELECT count(*)
FROM sysobjects
WHERE (name in
(SELECT name
FROM sysindexes
WHERE (id = a.id) AND (indid in
(SELECT indid
FROM sysindexkeys
WHERE (id = a.id) AND (colid in
(SELECT colid
FROM syscolumns
WHERE (id = a.id) AND (name = a.name))))))) AND
(xtype = PK))>0 then √ else end) 主键,
b.name 类型,
a.length 占用字节数,
COLUMNPROPERTY(a.id,a.name,PRECISION) as 长度,
isnull(COLUMNPROPERTY(a.id,a.name,Scale),0) as 小数位数,
(case when a.isnullable=1 then √else end) 允许空,
isnull(e.text,) 默认值,
isnull(g.[value],) AS 字段说明
FROM syscolumns a left join systypes b
on a.xtype=b.xusertype
inner join sysobjects d
on a.id=d.id and d.xtype in (U,V) and d.name<>dtproperties
left join syscomments e
on a.cdefault=e.id
left join sys.extended_properties g
on a.id=g.major_id AND a.colid = g.major_id
order by a.id,a.colorder