MySQL error: The maximum column size is 767 bytes

Question

When I run a program which does something with MySQL, I got this error message:

2015-06-10 15:41:12,250 ERROR app.wsutils 419 INCRON: Error: (\'HY000\

Answer 1

I had this problem because I tried to create a String primary key with varchar(254). Easy to overlook sometimes.. So double check your index type and length as well :)