Question

I have a Debian server and

I need a sh script which calls sql-script

in order to get some data from MySQL table

So I connect via ssh as root to my server and created all the files

Please note that I used full path to all the files in the script

in order to avoid misinterpretations.

/root/bin/mgbc.sh

#!/bin/sh

(echo "SET @cid=570; SET @cid2='service@';" ; cat /root/bin/mgbc.sql) |/full-path-to/mysql -uusername -pservetword  > /root/bin/result_mgbc.txt

/root/bin/mgbc.sql

SELECT  table1.id, table1.a_id, table2.email
FROM table1
INNER JOIN table2 ON table1.a_id=table2.id
AND table1.campaign_id = @cid
AND table2.email LIKE CONCAT('%', @cid2 ,'%')
;

let`s run it

*/root/bin/mgbc.sh*

and in the */root/bin/result_mgbc.txt* I see

*table1.id, table1.a_id, table2.email*

and lot of lines

Then I decided to put it as a crontab task

so I entered

crontab -e

and added a line

35 10 1 * * /root/bin/mgbc.sh

I see from a crontab log file that the script is started, but in the */root/bin/result_mgbc.txt* I see the field list only

table1.id, table1.a_id, table2.email

and no data at all.

Looks like @cid and @cid2 parameters are lost somewhere when the crontab runs the script.

Can anyone tell me what is going on and how to solve that?

Thank you in advance.

Answer 1

将您的SET语句添加到mgbc.sql并像这样运行

/full-path-to/mysql -uusername -pservetword < /root/bin/mgbc.sql > /root/bin/result_mgbc.txt

或

/full-path-to/mysql -uusername -pservetword -e "SET @cid=570; SET @cid2='service@';" -e "$(cat /root/bin/mgbc.sql)" > /root/bin/result_mgbc.txt

或者您可以根据输入参数动态构建sql文件。

不确定这是否有用

/full-path-to/mysql -uusername -pservetword -e "SET @cid=570; SET @cid2='service@';" < /root/bin/mgbc.sql > /root/bin/result_mgbc.txt

Answer 2

我终于找到了解决方案。瓶颈是“％”

为了使一切正常，我需要这样做：

<强> /root/bin/mgbc.sh

#!/bin/sh

(/bin/echo "SET @cid=570; SET @cid2='something@';" ; cat /root/bin/mgbc.sql) | /usr/bin/mysql -uusername -pservetword  > /root/bin/result_mgbc.txt

SQL脚本

SET @percent := '%' ;

SELECT  table1.id, table1.a_id, table2.email
FROM table1
INNER JOIN table2 ON table1.a_id=table2.id
AND table1.campaign_id = @cid
AND table2.email LIKE CONCAT(@percent, @cid2 , @percent)
;

SET @percent：='％'修复了isue，

因为 crontab 无法使用百分号。

感谢大家的帮助！

sh script does not work from crontab

2 个答案: