SQL语句 返回一个数据表的字段，类型和大小及数据库中的表名和详细信息等

一、在数据库里，我有一个表tb1的结构如下：

用一条SQL语句返回这个表的列名、类型及大小，如下：

实现的SQL语句为：

SELECT c.name As 'colName', t.name 'colType', c.prec 'colSize'
FROM systypes t,syscolumns c
WHERE t.xtype=c.xtype
AND c.id = (SELECT id FROM sysobjects WHERE name='表名')
ORDER BY c.colid

二、[转]sql 列出数据库中所有表及字段详细信息

--select name from sysobjects where type='U' order by name   
SELECT    
    (case when a.colorder=1 then d.name else '' end) 表名,   
   -- a.colorder 字段序号,   
    a.name 字段名,   
    (case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end) 标识,   
    (case when (SELECT count(*)    
                FROM sysobjects    
                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) 主键,   
    b.name 类型,   
    --a.length 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) 允许空,   
    isnull(e.text,'') 默认值   
    --isnull(g.[value],'') AS 字段说明       
FROM  syscolumns a    
    left join systypes b on a.xtype=b.xusertype   
    inner join sysobjects d on a.id=d.id  and  d.xtype='U' and d.name<>'dtproperties'  
    left join syscomments e on a.cdefault=e.id   
    --left join sysproperties g on a.id=g.id AND a.colid = g.smallid     
order by a.id,a.colorder  

三、返回数据库中所有的表名

select name from sysobjects where type='U' order by name