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 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     = case when a.isnullable=1 then ‘√‘else ‘‘ end,       默认值     = isnull(e.text,‘‘),       字段说明   = 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  sys.extended_properties   g   on      a.id=G.major_id and a.colid=g.minor_id   left join    sys.extended_properties f   on      d.id=f.major_id and f.minor_id=0   -- where d.name=‘C_PARTY_SPREADER‘    --如果只查询指定表,加上此条件   order by      a.id,a.colorder