怎样查询数据库中一张表中所有的字段名称

怎样查询数据库中一张表中所有的字段名称

-表的字段名称

select name from syscolumns where id=object_id( '表名 ')

--表的字段数

select count(name) from syscolumns where id=object_id( '表名 ')

最好改成：object_id(N '表名 ')

这样只是规范一些，一般不会出错

select name from syscolumns where id=object_id(N '表名 ')--列名

select name from sysobjects where xtype= 'U '--表名

select name from sysobjects where xtype= 'P '--存储过程

select t1.id tabid,t1.name tabname,t2.name colname,t3.name datatype,t2.length

from sysobjects t1,syscolumns t2,systypes t3

where t1.xtype='U'

and t1.id=t2.id

and t2.xtype=t3.xtype

更详细的说明：

SELECT

表名 = d.name,

表说明 = isnull(f.value, ''),

字段序号 = a.colorder,

字段名 = a.name,

标识 = case when COLUMNPROPERTY(a.id, a.name, 'IsIdentity')= 1 then 'Y'else '' end,

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 'Y' else '' end,

类型 = b.name,

最大字节数 = a.length,

最大长度 = 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 'Y'else '' end,

默认值 = isnull(e.text, ''),

字段说明 = isnull(g.value, '')

FROM syscolumns a

left 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 join 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

order by d.name,a.colorder

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