SELECT (case when a.colorder=1 then d.name else '' end) 表名,a.colorder 字段序号,a.name 字段名,(case when a.colorder=1 then isnull(f.value,'') else '' end) 表说明, (case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '1'else '0' end)标识,(case when (SELECT count(*) FROM sysobjectsWHERE (name in (SELECT name FROM sysindexesWHERE (id = a.id) AND (indid in(SELECT indid FROM sysindexkeysWHERE (id = a.id) AND (colid in(SELECT colid FROM syscolumns WHERE (id = a.id) AND (name = a.name)))))))AND (xtype = 'PK'))>0 then '1' else '0' end) 主键,b.name 类型,a.length 占用字节数,COLUMNPROPERTY(a.id,a.name,'PRECISION') as 长度,isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0) as 小数位数,(case whena.isnullable=1 then '1'else '0' end) 允许空,isnull(e.text,'') 默认值,isnull(g.[value], ' ') AS [说明]FROM syscolumns aleft join systypes b on a.xtype=b.xusertypeinner join sysobjects d on a.id=d.id and d.xtype='U' and d.name<>'dtproperties'left join syscomments e on a.cdefault=e.idleft join sys.extended_properties g on a.id=g.major_id AND a.colid=g.minor_idleft join sys.extended_properties f on d.id=f.major_id and f.minor_id=0--where b.name is not nullWHERE d.name='DBA_Server' --如果只查询指定表,加上此条件，此案例为表DBA_Serverorder by a.id,a.colorder
