SELECT fldName = a.name, priName = case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end, idName = 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 '√' else '' end, xtypeName = b.name, xtypeByte = a.length, xtypeLen = COLUMNPROPERTY(a.id,a.name,'PRECISION'), smalalInt = isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0), ableNull = case when a.isnullable=1 then '√'else '' end, fldDescription = 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 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 where d.name='表名' order by a.id,a.colorder
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 摘自zjcxc(邹建)的专栏 Trackback: http://tb.blog.csdn.net/TrackBack.aspx?PostId=20098
xtypeLen = COLUMNPROPERTY(a.id,a.name,'PRECISION'), smalalInt = isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0),
ableNull = case when a.isnullable=1 then '√'else '' end, fldDescription = 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 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 where d.name='表名' order by a.id,a.colorder
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
摘自zjcxc(邹建)的专栏
Trackback: http://tb.blog.csdn.net/TrackBack.aspx?PostId=20098
请问这是为什么?
server.Connect( "(local)" , "sa" , "youpassword" );
SQLDMO._Database db = server.Databases.Item( 1 , "DBO" );
SQLDMO._Table tb = db.Tables.Item( 1 , "DBO" );
foreach( SQLDMO._Column column in tb.Columns )
{
Console.WriteLine( column.Name );
Console.WriteLine( column.Datatype );
Console.WriteLine( column.Length );
Console.WriteLine("==================");
}
server.DisConnect();