修改数据库数据

??在升级应用时，我们常常会遇到升级数据库的问题，这就涉及到sql脚本的编写。
??一般我们会通过写sql脚本，然后将xxx.sql脚本放到数据库中进行source xxx.sql执行。本篇文章，我们可以通过写shell脚本来执行数据库操作。

配置文件

创建 test_sql.properties 作为shell脚本的外部配置参数修改：

<code>[andya@liunx01 sql_sh]$ vim test_sql.properties
# set parameters start
# 1 db name
dbName="db01"
# 2 the valueof net  speeds and requests 
netMaxSpeeds=500
netRequests="test.t1"
# 3 database info 
## mysql address
MYSQL_ADDRESS="10.127.0.1" 
## database name
MYSQL_DATABASE_NAME="db_test" 
## 5.3 bdoc connect mysql user name
MYSQL_USER="user01" 
## 5.4 bdoc connect mysql user password
MYSQL_PASSWD="123456" 
## 5.5  mysql engine
DATABASE_ENGINE=mysql
</code>

shell脚本

创建shell脚本test_sql.sh

<code>[andya@liunx01 sql_sh]$ vim test_sql.sh
#!/bin/bash
starttime=$(date +%Y-%m-%d\ %H:%M:%S)
echo "【Start to execute the script】， start time is: " $starttime   >> test_sql_sh.log
# 1 read parameters
# ===================================================================
echo "------ test_sql.properties start------" >> test_sql_sh.log
source ./test_sql.properties
echo "Parameters: cat test_sql.properties" >> test_sql_sh.log
while read line
do
 echo $line >> test_sql_sh.log ;
done < test_sql.properties
echo "------ test_sql.properties end------" >> test_sql_sh.log
# =================================================================
# 2 update database
# ========================
testSql="
SET @dbId=(SELECT id FROM ${MYSQL_DATABASE_NAME}.\`test_tb01\` WHERE \`NAME\` = \"${dbName}\");
INSERT INTO ${MYSQL_DATABASE_NAME}.\`test_tb02\` (\`NAME\`, \`DB_ID\` ,\`MAX_SPEEDS\`, \`NET_REQUESTS\`) VALUES ('${dbName}', @dbId, '${netMaxSpeeds}', '${netRequests}');
"
echo -e "\nSql: add hbase sql is: "${testSql} >> test_sql_sh.log
id=$(${DATABASE_ENGINE} -h${MYSQL_ADDRESS} -u${MYSQL_USER} -p${MYSQL_PASSWD} -D ${MYSQL_DATABASE_NAME} -e "${testSql}")
echo "Sql: Modify db data successfully, and insert db id is: "${id} >> test_sql_sh.log
endtime=`date +"%Y-%m-%d %H:%M:%S"`
echo "【Execute the script end】, end time is: " ${endtime} >> test_sql_sh.log
echo -e "\n" >> test_sql_sh.log
exit 0
</code>

脚本执行

./test_sql.sh
并且可以查看到输出日志test_sql_sh.log

Linux—编写shell脚本操作数据库执行sql

标签：shell   code   echo   数据库   cat   数据库数据   insert   数据库操作   shel