Mysql数据库相关操作

Mysql命令参考文档

创建数据库:

CREATE DATABASE `db_name` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;

设置默认数据库:

use db_name;

创建表格:

t1: create table tb_hour_reason_static(ip varchar(15) not null,reason varchar(30) not null,static_time datetime not null,shownum bigint(12),clicknum bigint(12),primary key (ip,reason,static_time));
t2: create view v_day_reason_static(ip,reason,static_date,shownum,clicknum) as  select ip,reason,date(static_time),sum(shownum),sum(clicknum) from tb_hour_reason_static  group by date(static_time),reason,ip;

t3: create table tb_hour_allip_reason_static(reason varchar(30) not null,static_time datetime not null,shownum bigint(12),clicknum bigint(12),primary key (reason,static_time));

插入数据：

insert into tb_hour_allip_reason_static(reason,static_time,shownum,clicknum) select reason,static_time,sum(shownum),sum(clicknum) from tb_hour_reason_static group by reason,static_time;

t4: create view v_day_allip_reason_static(reason,static_date,shownum,clicknum) as  select reason,date(static_time),sum(shownum),sum(clicknum) from tb_hour_allip_reason_static group by date(static_time),reason;

每次点击
t5: create table tb_day_whole_static(static_date date not null primary key,shownum bigint(12),clicknum  bigint(12));
插入数据：
insert into tb_day_whole_static(static_date,shownum,clicknum) select static_date,sum(shownum) as shownum,sum(clicknum) as clicknum from v_day_allip_reason_static where reason regexp '^[0-9]*$' group by static_date;

通过部分字段查询结果及部分字段给定值插入数据：

对部分reason进行累加
insert into tb_hour_reason_static(ip,reason,static_time,shownum,clicknum) select ip,’RCMT’ as reason,static_time,sum(shownum) as shownum,sum(clicknum) as clicknum from tb_hour_reason_static where static_time=’2017-08-16 07:00:00’ and (reason=’RCM’ or reason=’RCMF’) group by ip;

insert into tb_hour_reason_static(ip,reason,static_time,shownum,clicknum) select ip,’CF’ as reason,static_time,sum(shownum) as shownum,sum(clicknum) as clicknum from tb_hour_reason_static where static_time=’2017-08-16 07:00:00’ and (reason=’IRCMR’ or reason=’IRCMH’ or reason=’IRCM1’ or reason=’IRCM2’ or reason=’IRCM3’) group by ip;

insert into tb_hour_reason_static(ip,reason,static_time,shownum,clicknum) select ip,’VIDEO’ as reason,static_time,sum(shownum) as shownum,sum(clicknum) as clicknum from tb_hour_reason_static where static_time=’2017-08-16 07:00:00’ and reason like ‘%VIDEO%’ group by ip;

创建视图(通过查询结果创建)：

v1: create view v_hour_allreason_static(ip,static_time,shownum,clicknum) as select ip,static_time,sum(shownum),sum(clicknum) from tb_hour_reason_static where reason not regexp '^[0-9]*$' group by ip,static_time;
v2: create view v_day_allreason_static(ip,static_date,shownum,clicknum) as select ip,static_date,sum(shownum),sum(clicknum) from v_day_reason_static where reason not regexp '^[0-9]*$' group by ip,static_date;

v3: create view v_hour_allip_allreason_static(static_time,shownum,clicknum) as select static_time ,sum(shownum),sum(clicknum)  from tb_hour_allip_reason_static where reason not regexp '^[0-9]*$' group  by static_time;

查询

select count(*) from tb_hour_reason_static where ip ='172.27.60.138';

select sum(shownum) from tb_hour_reason_static where ip ='172.27.60.138' and static_time like '2017-07-10%';
select * from v_hour_allreason_static where static_time>='2017-07-25 00:00:00' and ip='10.168.11.211';

关于时间字段的条件判断

8天以前的数据删除
 delete from tb_hour_reason_static where date(static_time) <= DATE_SUB(CURDATE(), INTERVAL 8 DAY);
32天以前的数据删除
   delete from tb_hour_allip_reason_static where date(static_time) <= DATE_SUB(CURDATE(), INTERVAL 32 DAY);
367天以前的数据删除
   delete from tb_day_whole_static where static_date <= DATE_SUB(CURDATE(), INTERVAL 367 DAY);
从当前时间前4小时 之后的数据插入
insert into tb_hour_allip_reason_static(reason,static_time,shownum,clicknum) (select reason,static_time,sum(shownum),sum(clicknum) from tb_hour_reason_static where static_time>DATE_SUB(NOW(), INTERVAL 4 HOUR) group by reason,static_time);
end;

查询中的模式匹配与模糊查询：

参考：mysql文档

链接两个查询的结果扩充

/*********************************************************************************/
select a.static_date,a.shownum,a.clicknum,b.shownum,b.clicknum from 
(select static_date,sum(shownum) as shownum,sum(clicknum) as clicknum from v_day_allip_reason_static where reason regexp '^[0-9]*$') a
left join
(select static_date,sum(shownum) as shownum,sum(clicknum) as clicknum from v_day_allip_reason_static where reason not regexp '^[0-9]*$') b
on a.static_date=b.static_date
/**********************************************************************************/

事务和存储过程

数据表类型为innodb 才支持事务

 alter table tb_day_whole_static  engine=innodb;
 alter table tb_hour_reason_static engine=innodb;
 alter table tb_hour_allip_reason_static  engine=innodb;

设置数据库事件开启：

show variables like '%sche%';
set global event_scheduler='on';

存储过程：

proc1：
对 table1 只保存当天，及其前7天的数据。即是：1天 0点过后1分钟，删除当前时间8天前的数据。

对 table3 只当天及其前保存31天数据，即是：1 天 0点过后 1分钟，删除当前时间 32天前的数据。

对 table5 只保存当天，及其前366天数据，即是：1天 0点过后 1分钟，删除当前时间前367天数据。

对 table3 插入当前一小时产生的数据，整点15分钟后，插入当前时间前3个小时的数据

对table5 插入当天的数据，零点15 分钟后，插入当前时间前一天的数据。

DELIMITER //

mysql > CREATE PROCEDURE demo_in_parameter(IN p_in int)

     -> BEGIN

    -> SELECT p_in; /*查询输入参数*/

    -> SET p_in=2; /*修改*/

    -> SELECT p_in; /*查看修改后的值*/

    -> END;

    -> //
     DELIMITER ;

0点1分删除任务

drop procedure if exists  keepsize;
DELIMITER //
create procedure keepsize()
begin
   delete from tb_hour_reason_static where date(static_time) >= DATE_SUB(CURDATE(), INTERVAL 8 DAY);
   delete from tb_hour_allip_reason_static where date(static_time) >= DATE_SUB(CURDATE(), INTERVAL 32 DAY);
   delete from tb_day_whole_static where static_date >= DATE_SUB(CURDATE(), INTERVAL 367 DAY);
end;
//
DELIMITER ;

drop procedure if exists  inserttballip;
DELIMITER //
create procedure inserttballip()
begin
   insert into tb_hour_allip_reason_static(reason,static_time,shownum,clicknum) (select reason,static_time,sum(shownum),sum(clicknum) from tb_hour_reason_static where static_time>DATE_SUB(NOW(), INTERVAL 4 HOUR) group by reason,static_time);
end;
//
DELIMITER ;

3点15插入任务

drop procedure if exists  inserttbwhole;
DELIMITER //
create procedure inserttbwhole()
begin
   insert into tb_day_whole_static(static_date,shownum,clicknum) select static_date,sum(shownum) as shownum,sum(clicknum) as clicknum from v_day_allip_reason_static where static_date>=DATE_SUB(CURDATE(), INTERVAL 1 DAY) and reason regexp '^[0-9]*$' group by static_date;
end;
//
DELIMITER ;

事务：

drop event if exists clear_event;
create event clear_event
ON SCHEDULE EVERY 1 DAY STARTS '2017-07-20 03:15:00'
on completion preserve disable
do call  keepsize();

drop event if exists allip_event;
create event allip_event
ON SCHEDULE EVERY 1 HOUR STARTS '2017-07-20 20:15:00'
on completion preserve disable
do call inserttballip();

drop event if exists whole_event;
create event whole_event
ON SCHEDULE EVERY 1 DAY STARTS '2017-07-20 03:15:00'
on completion preserve disable
do call  inserttbwhole();

1) 临时关闭事件
　　

ALTER EVENT e_test DISABLE;

　　
2) 开启事件

开启事件
ALTER EVENT allip_event ENABLE;
ALTER EVENT whole_event ENABLE;

********************
alter event allip_event ON  COMPLETION PRESERVE ENABLE; 

alter event whole_event ON  COMPLETION PRESERVE ENABLE; 

alter event clear_event ON  COMPLETION PRESERVE ENABLE;
************************

Mysql数据库相关操作

Mysql命令参考文档

创建数据库:

设置默认数据库:

创建表格:

插入数据：

通过部分字段查询结果及部分字段给定值插入数据：

创建视图(通过查询结果创建)：

查询

关于时间字段的条件判断

查询中的模式匹配与模糊查询：

链接两个查询的结果扩充

事务和存储过程

存储过程：

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