2005数据库结构显示

use Roy -- 數據庫
go
-- 2005實現數據庫表字段屬性統計(2000里的系統表sysproperties描述表不存在，2005里用sys.extended_properties視圖替代)
select
[ 表名 ] = c.Name,
[ 表说明 ] = isnull (f. [ value ] , '' ),
[ 列名 ] = a.Name,
[ 列序號 ] = a.Column_id,
[ 標識 ] = case when is_identity = 1 then ' √ ' else '' end ,
[ 主鍵 ] = case when exists ( select 1 from sys.objectsx join sys.indexesy on x.Type = N ' PK ' and x.Name = y.Name
join sysindexkeysz on z.ID = a. Object_id and z.indid = y.index_id and z.Colid = a.Column_id)
then ' √ ' else '' end ,
[ 類型 ] = b.Name,
[ 字節數 ] = case when a. [ max_length ] =- 1 and b.Name != ' xml ' then ' max/2G '
when b.Name = ' xml ' then ' 2^31-1字節/2G '
else rtrim (a. [ max_length ] ) end ,
[ 長度 ] = case when ColumnProperty (a. object_id ,a.Name, ' Precision ' ) =- 1 then ' 2^31-1 '
else rtrim ( ColumnProperty (a. object_id ,a.Name, ' Precision ' )) end ,
[ 小數 ] = isnull ( ColumnProperty (a. object_id ,a.Name, ' Scale ' ), 0 ),
[ 是否為空 ] = case when a.is_nullable = 1 then ' √ ' else '' end ,
[ 列说明 ] = isnull (e. [ value ] , '' ),
[ 默認值 ] = isnull (d. text , '' )
from
sys.columnsa
left join
sys.typesb on a.user_type_id = b.user_type_id
inner join
sys.objectsc on a. object_id = c. object_id and c.Type = ' U '
left join
syscommentsd on a.default_object_id = d.ID
left join
sys.extended_propertiese on e.major_id = c. object_id and e.minor_id = a.Column_id and e.class = 1
left join
sys.extended_propertiesf on f.major_id = c. object_id and f.minor_id = 0 and f.class = 1