显示数据库中的表结构(新增了索引及表的描述信息)

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 sysobjects where xtype='PK' and name in (

SELECT name FROM sysindexes WHERE indid in(

SELECT indid FROM sysindexkeys WHERE id = a.id AND colid=a.colid

))) then '√' else '' end,

类型=b.name,

占用字节数=a.length,

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 '√'else '' end,

默认值=isnull(e.text,''),

字段说明=isnull(g.[value],''),

索引名称=isnull(h.索引名称,''),

索引顺序=isnull(h.排序,'')

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

left join sysproperties f on d.id=f.id and f.smallid=0

left join(--这部分是索引信息,如果要显示索引与表及字段的对应关系,可以只要此部分

select 索引名称=a.name,c.id,d.colid

,排序=case indexkey_property(c.id,b.indid,b.keyno,'isdescending')

when 1 then '降序' when 0 then '升序' end

from sysindexes a

join sysindexkeys b on a.id=b.id and a.indid=b.indid

join (--这里的作用是有多个索引时,取索引号最小的那个

select id,colid,indid=min(indid) from sysindexkeys

group by id,colid) b1 on b.id=b1.id and b.colid=b1.colid and b.indid=b1.indid

join sysobjects c on b.id=c.id and c.xtype='U' and c.name<>'dtproperties'

join syscolumns d on b.id=d.id and b.colid=d.colid

where a.indid not in(0,255)

) h on a.id=h.id and a.colid=h.colid

--where d.name='要查询的表' --如果只查询指定表,加上此条件

order by a.id,a.colorder