shell编程系列22--shell操作数据库实战之shell脚本与MySQL数据库交互(增删改查)

shell编程系列22--shell操作数据库实战之shell脚本与MySQL数据库交互(增删改查)

Shell脚本与MySQL数据库交互(增删改查)

# 环境准备：安装mariadb 数据库
[root@localhost shell]# yum install mariadb mariadb-server mariadb-libs -y
[root@localhost shell]# systemctl start mariadb
[root@localhost shell]# netstat -tnlp |grep :
tcp               0.0.0.0:            0.0.0.0:*               LISTEN      /mysqld

# 默认没有密码，直接mysql即可进入数据库管理控制台

# 新建数据库
create database school default character set utf8;

# 导入测试数据
--建表
--学生表

CREATE TABLE student(
    s_id varchar(),
    s_name varchar() not null default '',
    s_birth varchar() not null default '',
    s_sex varchar() not null default '',
    primary key(s_id)
);

--课程表
create table course(
    c_id varchar(),
    c_name varchar() not null default '',
    t_id varchar() not null,
    primary key(c_id)
);

--教师表
create table teacher(
    t_id varchar(),
    t_name varchar() not null default '',
    primary key(t_id)
);

--成绩表
create table score(
    s_id varchar(),
    c_id varchar(),
    s_score int(),
    primary key(s_id,c_id)
);

--插入学生测试数据
insert into student values('','zhaolei','1990-1001-1001','male');
insert into student values('','lihang','1990-12-21','male');
insert into student values('','yanwen','1990-1005-20','male');
insert into student values('','hongfei','1990-1008-1006','male');
insert into student values('','ligang','1991-12-1001','male');
insert into student values('','zhousheng','1992-1003-1001','male');
insert into student values('','wangjun','1989-1007-1001','male');
insert into student values('','zhoufei','1990-1001-20','male');

--课程表测试数据
insert into course values('','chinese','');
insert into course values('','math','');
insert into course values('','english','');

--教师表测试数据
insert into teacher values('', 'aidisheng');
insert into teacher values('', 'aiyinsitan');
insert into teacher values('', 'qiansanqiang');

--成绩表测试
insert into score values('','',);
insert into score values('','',);
insert into score values('','',);

insert into score values('','',);
insert into score values('','',);
insert into score values('','',);

insert into score values('','',);
insert into score values('','',);
insert into score values('','',);

insert into score values('','',);
insert into score values('','',);
insert into score values('','',);

insert into score values('','',);
insert into score values('','',);

insert into score values('','',);
insert into score values('','',);

insert into score values('','',);
insert into score values('','',);

# 添加指定数据权限的用户
MariaDB [school]> grant all on school.* to dbuser@'%' identified by '';
# % 默认是不允许localhost登录的，需要单独添加localhost的权限
MariaDB [mysql]> grant all on school.* to dbuser@'localhost' identified by '';

[root@localhost ~]# mysql -h 10.11.0.215 -u dbuser -p123456
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is
Server version: 5.5.-MariaDB MariaDB Server

Copyright (c) , , Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> 

mysql的常用选项

[root@localhost ~]# mysql -udbuser -p123456 -h10.11.0. -D school -e "select * from student;";
+------+-----------+----------------+-------+
| s_id | s_name    | s_birth        | s_sex |
+------+-----------+----------------+-------+
|  | zhaolei   | -- | male  |
|  | lihang    | --     | male  |
|  | yanwen    | --   | male  |
|  | hongfei   | -- | male  |
|  | ligang    | --   | male  |
|  | zhousheng | -- | male  |
|  | wangjun   | -- | male  |
|  | zhoufei   | --   | male  |
+------+-----------+----------------+-------+

# -N 不显示列信息，-B 去除多余信息， -D 指定操作的数据库
[root@localhost ~]# mysql -udbuser -p123456 -h10.11.0. -B -N -D school -e "select * from student;";
    zhaolei    --    male
    lihang    --    male
    yanwen    --    male
    hongfei    --    male
    ligang    --    male
    zhousheng    --    male
    wangjun    --    male
    zhoufei    --    male

# -E 垂直显示
[root@localhost ~]# mysql -udbuser -p123456 -h10.11.0. -E -B -N -D school -e "select * from student;";
*************************** . row ***************************

zhaolei
--
male
*************************** . row ***************************

lihang
--
male
*************************** . row ***************************

yanwen
--
male
*************************** . row ***************************

hongfei
--
male
*************************** . row ***************************

ligang
--
male
*************************** . row ***************************

zhousheng
--
male
*************************** . row ***************************

wangjun
--
male
*************************** . row ***************************

zhoufei
--
male

# -H 以HTML格式显示
# mysql -udbuser -p123456 -h10.11.0. -H -B -N -D school -e "select * from student;";
<TABLE BORDER=><TR><TR><TD></TD><TD>zhaolei</TD><TD>--</TD><TD>male</TD></TR><TR><TD></TD><TD>lihang</TD><TD>--</TD><TD>male</TD></TR><TR><TD></TD><TD>yanwen</TD><TD>--</TD><TD>male</TD></TR><TR><TD></TD><TD>hongfei</TD><TD>--</TD><TD>male</TD></TR><TR><TD></TD><TD>ligang</TD><TD>--</TD><TD>male</TD></TR><TR><TD></TD><TD>zhousheng</TD><TD>--</TD><TD>male</TD></TR><TR><TD></TD><TD>wangjun</TD><TD>--</TD><TD>male</TD></TR><TR><TD></TD><TD>zhoufei</TD><TD>--</TD><TD>male</TD></TR></TABLE>

# -X 以xml格式显示
[root@localhost ~]# mysql -udbuser -p123456 -h10.11.0. -H -B -N -D school -e "select * from student;" > result.html
[root@localhost ~]# mysql -udbuser -p123456 -h10.11.0. -X -B -N -D school -e "select * from student;" > result.xml

批量删除生产环境数据库表的示例：

tables="templates_201904181553
templates_201904251425
templates_201904281550
templates_201904292018
templates_201905101118
templates_201905210938
templates_201905231928
templates_201906052000
templates_201906061640
templates_201907021640
templates_201907021922
templates_201907090936
templates_201907111535
templates_201907111545
templates_201907112119
templates_201907151538
templates_20190715194257
templates_201907161805
templates_201907171414
templates_20190717192927
templates_201907190923
templates_20190723214110
templates_201907290909
templates_201907291026
templates_201907300956
templates_20190731
templates_20190805
templates_20190807"

for i in $tables;do mysql -uroot -p'pass' -D cms_db -e "drop table ${i};" >/dev/nul;done