显示数据库中的表结构(新增了索引及表的描述信息)-数据库专栏,SQL Server

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