When you run query to select, update, insert… in ruby, you can show log realtime when query is running.
First, go to MySQL and run:
show variables like '%log%';
And find record with variable_name = general_log_file and get its value. In case, value is /var/lib/mysql/OFF016.log
Then, set
set global general_log = 1;
Then, open terminal and run:
sudo tailf <value>In case is:
sudo tailf /var/lib/mysql/OFF016.log
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