Question

Here is my issue. I have a set of SQL database queries that I am triggering using a shell script and a corresponding batch file with .sql extension. Some of my queries require some manual user input (As per request), which I have had no luck implementing in my script.

As of now, I take in the user input as a date through the shell script:

echo "Please specify the date in yyyy-mm-dd format: 'input;"
read input
mysql -u user -ppass < batch_file.sql

I would like to pass the variable $input to the batch file.

The batch file with the sql queries being executed looks something like this:

select count(*) as count from subscriptions 
where date_add(optin_date, interval 1 year) between "$input" 
and date(curdate()) 
and active = 1 
and stype = "domain";

Where "$input" is the variable passed down from the shell script.

Any ideas would bee appreciated, thank you.

Answer 1

Try doing this using a here-doc in a script :

#!/bin/sh

echo "Please specify the date in yyyy-mm-dd format: 'input;"
read input
mysql -u user -ppass <<EOF
select count(*) as count from subscriptions 
where date_add(optin_date, interval 1 year) between "$input" 
and date(curdatE()) 
and active = 1 
and stype = "domain";
EOF

Another solution if you can’t use the first solution for any reason :

echo "Please specify the date in yyyy-mm-dd format: 'input;"
read input
sed -i "s/\"\$input\"/$input/g" batch_file.sql
mysql -u user -ppass < batch_file.sql

Better use something like %%PATTERN%% instead of $input in SQL file for substitution if you prefer the second solution.