MySQL too long varchar truncation/error setting

Question

I have two MySQL instances. The 1st one truncates strings on insert when data is too long. The 2nd one raises an error:

ERROR 1406 (22001): Data too long for c

Answer 1

If strict SQL mode is not enabled and you assign a value to a CHAR or VARCHAR column that exceeds the column's maximum length, the value is truncated to fit and a warning is generated. For truncation of nonspace characters, you can cause an error to occur (rather than a warning) and suppress insertion of the value by using strict SQL mode. See Section 6.1.7, “Server SQL Modes”.

How you can change it: http://dev.mysql.com/doc/refman/5.7/en/sql-mode.html

---

Found two ways to disable strict mode:

1. add below to my.cnf

   sql-mode="NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"

2. way is using mysql console.

   SET @@global.sql_mode= '';

Please test them before running on production environment.