mysql 视图示例

基本操作

建立视图

  CREATE VIEW view_test(qty,price,total) AS SELECT quantity,price,quantity*price FROM t;

多表视图

  CREATE VIEW stu_class(id,name,glass) AS SELECT student.s_id,student.name,stu_info.glass FROM student,stu_info WHERE student.s_id = stu_info.s_id;

查看视图

  DESCRIBE 视图名

  DESC 视图名

查看视图基本信息

  SHOW TABLE STATUS LIKE '视图名';

查看视图的建表信息

  SHOW CREATE VIEW 视图名

在VIEW表中查看视图详细信息

  在mysql的information_schema数据库下的views表中存储了所有的视图定义,可以用select查看

  select * from information_schema.views;

 

修改视图

  REPLACE语句

    CREATE OR REPLACE VIEW view_test AS SELECT * FROM t;

  ALTER语句

    ALTER VIEW view_test SELECT name FROM t;

 

删除视图

  DROP VIEW IF EXISTS stu_glass

 

建表语句示例

/*获取系统组织结构
 *包括用户名称、用户ID、所属店面名称、所属店面ID、创建时间...
 */

CREATE VIEW organizationTableView as select id,storename,regdate from v9_qd_account;

 

/*获取当天的Cpz安装数据(按用户分组汇总)
 *包括用户ID、Cpz汇总值...
 */
CREATE VIEW TodayCpzTableView as select storeid,storename,count(id)as total,sum(tui_num)as tui_num from v9_qd_dev where days = DATE_FORMAT(NOW(),'%Y%m%d') group by storeid;

 

/*获取当月每天的Cpz安装数据(按天、用户分组汇总)
 *包括日期(天)、用户ID、Cpz汇总值、CpzApp汇总值、重复Cpz汇总值...
 */
CREATE VIEW HistoryCurrentMonthDayView as select storeid,storename,count(id)as total,sum(tui_num)as tui_num,days from v9_qd_dev where days > DATE_FORMAT(NOW(),'%Y%m') group by storeid,days;

 

/*获取每月的Cpz安装数据(按月、用户分组汇总)
 *包括日期(天)、用户ID、Cpz汇总值、CpzApp汇总值、重复Cpz汇总值...
 */
CREATE VIEW HistoryMonthTableView as select storeid,storename,count(id)as total,sum(tui_num)as tui_num, DATE_FORMAT(FROM_UNIXTIME(installdate),'%Y%m') as months from v9_qd_dev group by storeid,months;

/*根据输入的IMEI获取Cpz安装数据()
 *包括IMEI、账户ID、店面ID、安装时间、是否重复安装、安装app个数、手机型号
 */
CREATE VIEW QueryCpzDatumByIMEI as select storeid,storename,verify,tui_num,sn,idfa,imei,devms,installdate from v9_qd_dev;


//今天
DATE_FORMAT(NOW(),'%Y%m%d');

 

posted @ 2015-07-01 15:21  笑笑别人  阅读(503)  评论(0编辑  收藏  举报