MySQL5.6.6 not so silent
In version 5.5 when you insert data into a column that is too long, MySQL truncates the data and creates a warning like so:
If you are not checking for warnings in your code you will be failing silently.
In version 5.6.6 onwards MySQL throws an actual error:
This is because by default 5.6.6 comes with sql_mode set to STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION.
If this is causing issues you can set sql_mode back to the pre 5.6.6 value by setting
set global sql_mode = ''; while the server is running and
sql_mode='' in your my.cnf file. Or you can fix your schema ;)