shell操作数据库

#!/bin/bash

HOSTNAME="192.168.66.22" 
#数据库信息

PORT="5432"

USERNAME="postgres"

PASSWORD="postgres"

DBNAME="test_db_test" 
#数据库名称

TABLENAME="test_table_test" 
#数据库中表的名称

#创建数据库
create_db_sql="create database IF NOT EXISTS ${DBNAME}"

mysql -h${HOSTNAME} 
-P${PORT} -u${USERNAME} -p${PASSWORD} -e 
"${create_db_sql}"

#创建表

create_table_sql="create table IF NOT EXISTS ${TABLENAME} ( name varchar(20), id int(11) default 0 )"

mysql -h${HOSTNAME} 
-P${PORT} -u${USERNAME} -p${PASSWORD} ${DBNAME} -e 
"${create_table_sql}"

#插入数据

insert_sql="insert into ${TABLENAME} values('billchen',2)"

mysql -h${HOSTNAME} 
-P${PORT} -u${USERNAME} -p${PASSWORD} ${DBNAME} -e 
"${insert_sql}"

#查询

select_sql="select * from ${TABLENAME}"

mysql -h${HOSTNAME} 
-P${PORT} -u${USERNAME} -p${PASSWORD} ${DBNAME} -e 
"${select_sql}"

#更新数据

update_sql="update ${TABLENAME} set id=3"

mysql -h${HOSTNAME} 
-P${PORT} -u${USERNAME} -p${PASSWORD} ${DBNAME} -e 
"${update_sql}"

mysql -h${HOSTNAME} 
-P${PORT} -u${USERNAME} -p${PASSWORD} ${DBNAME} -e 
"${select_sql}"

#删除数据

delete_sql="delete from ${TABLENAME}"

mysql -h${HOSTNAME} 
-P${PORT} -u${USERNAME} -p${PASSWORD} ${DBNAME} -e 
"${delete_sql}"

mysql -h${HOSTNAME} 
-P${PORT} -u${USERNAME} -p${PASSWORD} ${DBNAME} -e 
"${select_sql}"