SELECT 表名 =casewhen a.colorder=1then d.name else''end, 表说明 =casewhen a.colorder=1thenisnull(f.value,'') else''end, 字段序号 = a.colorder, 字段名 = a.name, 标识 =casewhenCOLUMNPROPERTY( a.id,a.name,'IsIdentity')=1then'√'else''end, 主键 =casewhenexists(SELECT1FROM 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, 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 =casewhen a.isnullable=1then'√'else''end, 默认值 =isnull(e.text,''), 字段说明 =isnull(g.[value],'') FROM syscolumns a leftjoin systypes b on a.xusertype=b.xusertype innerjoin sysobjects d on a.id=d.id and d.xtype='U'and d.name<>'dtproperties' leftjoin syscomments e on a.cdefault=e.id leftjoin sys.extended_properties g on a.id=g.major_id and a.colid=g.minor_id leftjoin sys.extended_properties f on d.id=f.major_id and f.minor_id=0 where d.name='channels'--如果只查询指定表,加上此条件 orderby a.id,a.colorder