SQL2008数据库结构查询SQL

SELECT TOP 100 PERCENT
a.id,CASE WHEN a.colorder = 1 THEN d.name ELSE '' END AS 表名,
a.colorder AS 字段序号,
a.name AS 字段名,
 CASE WHEN COLUMNPROPERTY(a.id,a.name, 'IsIdentity') = 1 THEN '√' ELSE '' END AS 标识,
 CASE WHEN EXISTS(SELECT 1FROM dbo.sysindexes si INNER JOIN dbo.sysindexkeys sik ON si.id = sik.id AND si.indid = sik.indid INNER JOIN dbo.syscolumns sc ON sc.id = sik.id AND sc.colid = sik.colid INNER JOIN dbo.sysobjects so ON so.name = si.name AND so.xtype = 'PK' WHERE sc.id = a.id AND sc.colid = a.colid) THEN '√' ELSE '' END AS 主键,
 b.name AS 类型,
 a.length AS 长度,
 COLUMNPROPERTY(a.id, a.name, 'PRECISION')AS 精度,
 ISNULL(COLUMNPROPERTY(a.id, a.name, 'Scale'), 0) AS 小数位数,
 CASE WHEN a.isnullable = 1 THEN '√' ELSE '' END AS 允许空,
 ISNULL(e.text, '')AS 默认值,
 d.crdate AS 创建时间,
 CASE WHEN a.colorder = 1 THEN d.refdate ELSE NULL END AS 更改时间
 FROM dbo.syscolumns a
 LEFT OUTER JOIN dbo.systypes b ON a.xtype = b.xusertype
 INNER JOIN dbo.sysobjects d ON a.id = d.id AND d.xtype = 'U' AND d.status >= 0
 LEFT OUTER JOIN dbo.syscomments e ON a.cdefault = e.id
 ORDER BY d.name, a.colorder