设为首页 加入收藏

TOP

构建施耐德楼控系统数据库后台服务器示例工程四(SQLServer查询语句)
2015-11-21 01:42:31 来源: 作者: 【 】 浏览:0
Tags:构建 施耐德 系统 数据库 后台 服务器 示例 工程 SQLServer 查询 语句

由于目前做的是一个数据库操作的一个简易类,涉及到如下查询语句,在此记录一下。
1.查询表名

select object_id,name name from sys.tables

2.查询列信息

SELECT (case when a.colorder = 1 then d.name else null end) 表名, a.colorder 字段序号, a.name 字段名, (case when COLUMNPROPERTY(a.id, a.name, 'IsIdentity') = 1 then '√' else '' end) 标识, (case when (SELECT count(*) FROM sysobjects WHERE (name in (SELECT name FROM sysindexes WHERE (id = a.id) AND (indid in (SELECT indid FROM sysindexkeys WHERE (id = a.id) AND (colid in (SELECT colid FROM syscolumns WHERE (id = a.id) AND (name = a.name))))))) AND (xtype = 'PK')) > 0 then '√' else '' 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 when a.isnullable = 1 then '√' else '' end) 允许空, isnull(e.text, '') 默认值, isnull(g. value, ' ') AS 说明 FROM syscolumns a left join systypes b on a.xtype = 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.class and f.minor_id = 0 where b.name is not null and d.name = ? order by a.id, a.colorder; 

3.分页查询

select * from (select row_number() over(order by AlarmPriority) as rownumber,* from event) A where rownumber BETWEEN 0 and 10
】【打印繁体】【投稿】【收藏】 【推荐】【举报】【评论】 【关闭】 【返回顶部
分享到: 
上一篇游标的应用,一个小小的功能,做.. 下一篇postgresql端口不对外开放问题

评论

帐  号: 密码: (新用户注册)
验 证 码:
表  情:
内  容: