Sql语句查看表结构
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(1) 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 sysproperties g on a.id=g.id and a.colid=g.smallid left join sysproperties f on d.id=f.id and f.smallid=0 --where d.name='要查询的表' --如果只查询指定表,加上此条件 order by a.id,a.colorder (2) SQL2000系统表的应用 --1:获取当前数据库中的所有用户表 select Name from sysobjects where xtype='u' and status>=0 --2:获取某一个表的所有字段 select name from syscolumns where id=object_id('表名') --3:查看与某一个表相关的视图、存储过程、函数 select a.* from sysobjects a, syscomments b where a.id = b.id and b.text like '%表名%' --4:查看当前数据库中所有存储过程 select name as 存储过程名称 from sysobjects where xtype='P' --5:查询用户创建的所有数据库 select * from master..sysdatabases D where sid not in(select sid from master..syslogins where name='sa') 或者 select dbid, name AS DB_NAME from master..sysdatabases where sid <> 0x01 --6:查询某一个表的字段和数据类型 select column_name,data_type from information_schema.columns where table_name = '表名' --7:取得表字段的描述 select name, (select value from sysproperties where id = syscolumns.id and smallid=syscolumns.colid) as 描述 from syscolumns where id=object_id('表名')