Linux—编写shell脚本操作数据库执行sql

Posted 2021-03-04 Andya

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：

[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

shell脚本

创建shell脚本test_sql.sh

[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 "
Sql: 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 "
" >> test_sql_sh.log

exit 0

脚本执行

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