mysql使用

1.登录MySQL

mysql -uroot -p123456 db_1

参数：u用户名 p密码 数据库名

2. 导入数据库

drop database if exists game_s1;

create database game_s1;

use game_s1;

select database();

source /home/sql/game_s1_bak.sql;

注:倒入game_s1_bak.sql 内容

3.格式化输出

select * from t_account_info where char_name = 'z'\G;

4. 查找某段时间充值记录

select* from t_charge_info where charge_time between '2013-10-01 00:00:00' and '2013-10-01 07:19:45';

DROP TABLE IF EXISTS `t_charge_info`;

/*!40101 SET @saved_cs_client = @@character_set_client */;

/*!40101 SET character_set_client = utf8 */;

CREATE TABLE `t_charge_info` (

`id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT '交易编号',

`platform_gamesvr_id` char(30) NOT NULL COMMENT '平台号+服号可以唯一确定一个游戏账户',

`charge_money` int(11) NOT NULL DEFAULT '0' COMMENT '平台货币',

`charge_gold` int(11) NOT NULL DEFAULT '0' COMMENT '游戏货币',

`level` int(11) NOT NULL DEFAULT '0' COMMENT '玩家等级',

`user_name` varchar(30) NOT NULL COMMENT '平台账号',

`order_id` varchar(60) NOT NULL COMMENT '平台充值编号',

`charge_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '交易时间',

PRIMARY KEY (`id`),

UNIQUE KEY `char_name_uniq` (`order_id`),

KEY `charge_account` (`platform_gamesvr_id`)

) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='平台充值信息';

//导出记录

/********************charge.sql *******************

use game_s1;

select platform_gamesvr_id,charge_money,charge_time from t_charge_info where charge_time <'2013-09-04';

******************************************************/

mysql -uroot -p123456 -h 127.0.0.1 -D game_s1 <charge.sql> charge.txt

mysql -uroot -p123456 -h 127.0.0.1 game_s1 -e "select platform_gamesvr_id,charge_money,charge_time from t_charge_info where charge_time <'2013-09-04';" > charge.txt

###############log####################

create database game_s1_log

CREATE TABLE `ACTION_LOG` (

`ID` int(10) unsigned NOT NULL AUTO_INCREMENT,

`ACCOUNT` varchar(256) NOT NULL DEFAULT '',

`PLAYERID` int(10) unsigned NOT NULL,

`PLAYERNAME` varchar(33) NOT NULL DEFAULT '',

`PLAYERLEVEL` int(10) unsigned NOT NULL,

`TYPE` int(10) unsigned NOT NULL,

`TIME` int(10) unsigned NOT NULL,

`INFO` mediumtext NOT NULL,

PRIMARY KEY (`ID`),

KEY `TIME` (`TIME`),

KEY `TYPE_TIME` (`TYPE`,`TIME`),

KEY `PLAYERID_TYP_TIME` (`PLAYERID`,`TYPE`,`TIME`),

KEY `PLAYERNAME_TYPE_TIME` (`PLAYERNAME`,`TYPE`,`TIME`)

) ENGINE=InnoDB AUTO_INCREMENT=628648 DEFAULT CHARSET=utf8

mysql -uroot -p123456 -h 127.0.0.1 game_s1_log -e "select * from ACTION_LOG where PLAYERNAME='228test' and type=1;" > log.txt

5.将数据库导入到文件中

mysqldump --skip-opt --quick --default-character-set=utf8 --add-drop-table --create-options -e -u root -p123456 --databases game_s1 > /backup/game_s1.sql 2>>/backup/mysqldump.log

rsync -i -avz -H --progress -e "ssh -p 10022" root@ip:/backup/game_s1.sql.gz /home/

gunzip -d game_s1.sql.gz

6.将name,uid导入到文件中

select uid,char_name INTO OUTFILE '/tmp/trunk20150826.xls' FIELDS TERMINATED BY ',' from t_account_info

7.将文件数据导入数据库

SELECT * INTO OUTFILE 'C:\\log1.txt' FIELDS TERMINATED BY ',' FROM log.log1

LOAD DATA INFILE 'C:\\log1.txt' INTO TABLE aa.log2 FIELDS TERMINATED BY ',';

FIELDS TERMINATED BY ',' 字段间分割符

OPTIONALLY ENCLOSED BY '"' 将字段包围 对数值型无效

LINES TERMINATED BY '\n' 换行符

8.按等级查人数

select level,count(*) from t_character_info where char_flag=0 group by level order by level;

9. 如果字段原来无默认值，直接执行如下语句，添加默认值：

alter table 表名 add default(1) for 字段名

--如果原来有默认值，现在要更改默认值，则需要先把原来的默认值drop掉，再添加新的默认值

alter table 表名 drop constraint 默认值约束的名称

--如果不知道默认值约束的名称，用如下语句查询得到：

select [name]

from sysobjects t

where id = (select cdefault from syscolumns where id = object_id(N'表名')

and name='字段名')

10. 查询mysql当前用户使用状态

show processlist;

11.恢复用户数据

insert INTO consume (id,score) select id,sum(SUBSTRING(INFO,LOCATE('amount":"', INFO)+9,5)/1) c from db_1.ACTION_LOG

where TIME >= unix_timestamp("2015-12-17 1:00:00") and TIME <= unix_timestamp(CURRENT_TIMESTAMP()) group by id order by c desc;