基于SQL2005 SQL2008 表结构信息查询升级版的详解(含外键信息)

本篇文章是对SQL2005 SQL2008 表结构信息查询升级版(含外键信息)进行了详细的分析介绍，需要的朋友参考下

SELECT 

表名=CASE WHEN a.colorder = 1 THEN d.name ELSE '' END, 

表说明=CASE WHEN a.colorder = 1 THEN isnull(f.value, '') ELSE '' END , 

字段序号=a.colorder , 

字段名=a.name , 

标识=CASE WHEN COLUMNPROPERTY(a.id, a.name, 'IsIdentity') = 1 THEN '√' ELSE '' END , 

主键=CASE WHEN EXISTS (

  SELECT 1 

  FROM 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 = so.name AND so.xtype = 'PK' 

  WHERE sc.id = a.id AND sc.colid = a.colid) THEN '√' 

  ELSE '' 

 END , 

 外键=CASE WHEN tony.fkey is not null and tony.fkey=a.colid THEN '√' ELSE '' END , 

 外键表=CASE WHEN tony.fkey is not null and tony.fkey=a.colid 

THEN object_name(tony.fkeyid) ELSE '' 

   END ,

 外键字段=CASE WHEN tony.fkey is not null and tony.fkey=a.colid 

 THEN (SELECT name FROM syscolumns 

   WHERE colid=tony.fkey AND id=tony.fkeyid)   

 ELSE '' 

 END,

 类型=b.name , 

 长度=a.length , 

 精度=COLUMNPROPERTY(a.id, a.name, 'PRECISION') , 

 小数位数=ISNULL(COLUMNPROPERTY(a.id, a.name, 'Scale'), 0) , 

 允许空=CASE WHEN a.isnullable = 1 THEN '√' ELSE '' END , 

 默认值= ISNULL(e.text, ''), 

 字段说明=ISNULL(g.[value], ''), 

 创建时间=d.crdate, 

 更改时间=CASE WHEN a.colorder = 1 THEN d.refdate ELSE NULL END 

FROM dbo.syscolumns a 

LEFT 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 JOIN dbo.syscomments e ON a.cdefault = e.id 

LEFT JOIN sys.extended_properties g ON a.id = g.major_id AND a.colid = g.minor_id 

LEFT JOIN sys.extended_properties f ON d.id = f.major_id AND f.minor_id = 0  

LEFT JOIN sysobjects htl ON htl.parent_obj=d.id AND htl.xtype='F' 

LEFT JOIN sysforeignkeys tony on htl.id=tony.constid 

WHERE d.name='tb'  --这里输入包含表名称的条件

ORDER BY d.id, a.colorder