sql server 2008 查询表的字段以及字段的描述
查询某一个表的字段以及字段的描述:
select a.name tabname,a1.name '字段',b.value '字段描述' from sysobjects a left join sys.columns a1 on a.id = a1.object_id left join sys.extended_properties b on b.major_id = a.id and b.minor_id = a1.column_id where a.name='STUDENT_CLASS'
sysobjects:系统表 记录表名
sys.columns :记录表字段名
extended_properties : 表字段描述
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 = 'BAS_DEPT' order by a.id, a.colorder
分类:
sql server
标签:
sql server 2008
【推荐】国内首个AI IDE,深度理解中文开发场景,立即下载体验Trae
【推荐】编程新体验,更懂你的AI,立即体验豆包MarsCode编程助手
【推荐】抖音旗下AI助手豆包,你的智能百科全书,全免费不限次数
【推荐】轻量又高性能的 SSH 工具 IShell:AI 加持,快人一步
· 全程不用写代码,我用AI程序员写了一个飞机大战
· MongoDB 8.0这个新功能碉堡了,比商业数据库还牛
· 记一次.NET内存居高不下排查解决与启示
· DeepSeek 开源周回顾「GitHub 热点速览」
· 白话解读 Dapr 1.15:你的「微服务管家」又秀新绝活了