SQLServer表数据字典/表描述动态查询_改进

-- =============================================
-- Author:      <E.R>
-- Create date: <5/31/2011>
-- Description: <Get the description of a table>
-- =============================================
CREATE PROCEDURE [dbo].[proc_QueryDD]
@tableName varchar(50)
AS
BEGIN

SELECT
[Owner] = h.name
,[Table Name] = d.name
,[Table Description] = ISNULL(f.value, '')
,[Field Index] = a.colorder
,[Field Name] = a.name
,[Field Description] = ISNULL(g.[value], '')
,[Is Identity] =
CASE WHEN COLUMNPROPERTY(a.id, a.name, 'IsIdentity') = 1
THEN 'Y'
ELSE ''
END
,[Primary Key] =
CASE
WHEN EXISTS (
SELECT 1 FROM sysindexes id, syscolumns cl, sysobjects ob
WHERE ob.id = a.id AND ob.id = cl.id AND ob.id = id.id
AND ( id.status & 0x800 ) = 0x800
AND ( cl.name = INDEX_COL(@tableName, id.indid, 1)
OR cl.name = INDEX_COL(@tableName, id.indid, 2)
OR cl.name = INDEX_COL(@tableName, id.indid, 3)
OR cl.name = INDEX_COL(@tableName, id.indid, 4)
OR cl.name = INDEX_COL(@tableName, id.indid, 5)
OR cl.name = INDEX_COL(@tableName, id.indid, 6)
OR cl.name = INDEX_COL(@tableName, id.indid, 7)
OR cl.name = INDEX_COL(@tableName, id.indid, 8)
OR cl.name = INDEX_COL(@tableName, id.indid, 9)
OR cl.name = INDEX_COL(@tableName, id.indid, 10)
OR cl.name = INDEX_COL(@tableName, id.indid, 11)
OR cl.name = INDEX_COL(@tableName, id.indid, 12)
OR cl.name = INDEX_COL(@tableName, id.indid, 13)
OR cl.name = INDEX_COL(@tableName, id.indid, 14)
OR cl.name = INDEX_COL(@tableName, id.indid, 15)
OR cl.name = INDEX_COL(@tableName, id.indid, 16)
)
AND cl.name = a.name )
THEN 'Y'
ELSE ''
END
,[DB Type] = b.name
,[Bytes in store] = a.length
,[Length] = COLUMNPROPERTY(a.id, a.name, 'PRECISION')
,[Numeric] = ISNULL(COLUMNPROPERTY(a.id, a.name, 'Scale'), 0)
,[Is Nullable] =
CASE WHEN a.isnullable = 1 THEN 'Y' ELSE '' END
,[Default Value] = ISNULL(e.text, '')
FROM    syscolumns a
LEFT OUTER JOIN systypes b
ON a.xusertype = b.xusertype
INNER JOIN sysobjects d
ON a.id = d.id AND d.xtype = 'U' AND d.name <> 'dtproperties'
LEFT OUTER JOIN sysusers h
ON h.uid = d.uid
LEFT OUTER JOIN syscomments e
ON a.cdefault = e.id
--X:for sql 2005/2008
LEFT OUTER JOIN sys.extended_properties g
ON a.id = g.major_id AND a.colid = g.minor_id AND g.name = 'MS_Description'
LEFT OUTER JOIN sys.extended_properties f
ON d.id = f.major_id AND f.minor_id = 0 AND f.name = 'MS_Description'
--X:end
/*
--Y:for sql 2000
left outer join sysproperties g
on a.id=g.id and a.colid=g.smallid and g.name='MS_Description'
left outer join sysproperties f
on d.id=f.id and f.smallid=0 and f.name='MS_Description'
--Y:end
*/
WHERE   d.name = @tableName
ORDER BY a.id, a.colorder

END

GO