SELECT  a.name AS 字段名 ,
        b.name AS 类型 ,
        COLUMNPROPERTY(a.id, a.name, 'PRECISION') AS 长度 ,
        a.isnullable AS 允许空 ,
        ISNULL(e.text, '') AS 默认值 ,
        标识 = COLUMNPROPERTY(a.id, a.name, 'IsIdentity') ,
        主键 = CASE WHEN EXISTS ( SELECT  1
                                FROM    sysobjects
                                WHERE   xtype = 'PK'
                                        AND parent_obj = a.id
                                        AND name IN (
                                        SELECT  name
                                        FROM    sysindexes
                                        WHERE   indid IN (
                                                SELECT  indid
                                                FROM    sysindexkeys
                                                WHERE   id = a.id
                                                        AND colid = a.colid ) ) )
                  THEN '1'
                  ELSE '0'
             END
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 syscomments e ON a.cdefault = e.id
        LEFT OUTER JOIN sys.extended_properties g ON a.id = g.major_id
                                                     AND a.colid = g.minor_id
        LEFT OUTER JOIN sys.extended_properties f ON d.id = f.major_id
                                                     AND f.minor_id = 0
WHERE   ( d.name = '基础数据表' )
ORDER BY a.id ,
        a.colorder

------解决方案--------------------
SQL code
SELECT   
(case when a.colorder=1 then d.name else '' end) as 表名,--如果表名相同就返回空  
    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 (SELECT count(*) FROM sysobjects--查询主键  
                    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) as 主键,--查询主键END  
b.name as 类型,  
a.length as 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) as 允许空,  
isnull(e.text,'') as 默认值,  
i