本文共 1304 字，大约阅读时间需要 4 分钟。

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 'YES '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 'YES' 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 'YES'else '' end,    默认值     = isnull(e.text,''),    字段说明   = isnull(g.[value],'')FROM    syscolumns aleft join    systypes bon    a.xusertype=b.xusertypeinner join    sysobjects don    a.id=d.id  and d.xtype='U' and  d.name<>'dtproperties'left join    syscomments eon    a.cdefault=e.idleft joinsys.extended_properties   gon    a.id=G.major_id and a.colid=g.minor_idleft joinsys.extended_properties fon    d.id=f.major_id and f.minor_id=0 where d.name='YourTable'    --如果只查询指定表,加上此条件order by    a.id,a.colorder

当然，如果只查看某个表，在查询分析器中用 sp_help YourTable 也可得到很详细的信息．

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