Setting global sql_mode in MySQL

I am trying to set sql_mode in MySQL but it throws an error.

Command:

set global sql_mode='NO_BACKSLASH_ESCAPES','STRICT_TRANS_TABLE','NO_AUTO_CREATE_USER','NO_ENGINE_SUBSTITUTION'

• Is this not the proper way to set multiple modes?
• What are the advantages of setting session and global modes?
• Which is preferred?

I have different users trying to update the database with different UNC values and instead of setting the session mode to NO_BACKSLASH_ESCAPES, I though it would make sense to set a global mode for this. Does this make sense?

Please let me know.

Thanks.

I resolved it.

the correct mode is :

set global sql_mode="NO_BACKSLASH_ESCAPES,STRICT_TRANS_TABLE,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"