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

With the help of the answer given by BK435, I did the following and solved the problem.

set global innodb_file_format = BARRACUDA;
set global innodb_large_prefix = ON;
create table test (........) ENGINE=InnoDB DEFAULT CHARSET=utf8 ROW_FORMAT=DYNAMIC;

Answer 2

Your column that you are trying to index is too large and your settings must not be correct for innodb_large_prefix. There are a couple prerequisites parameters that also have to be set in order for innodb_large_prefix to work correctly.

You can check to make sure that innodb_large_prefix is set by running:

show global variables like 'innodb_lar%';

Here are a couple prerequisites for using innodb_large_prefix:

You need to set your global variable innodb_file_format=BARRACUDA

to check settings run: show global variables like 'innodb_fil%';

At the table level you have to use ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED

for Innodb, rows are stored in COMPACT format (ROW_FORMAT=COMPACT) by default.

Answer 3

I had the same error but on a different issue. I got this error while importing a data (data and schema) script. Deleting the Unique Index fixed the issue for me.

Answer taken from this link

Answer 4

Set the below system variables:

innodb_buffer_pool_size.................................... 702545920
innodb_file_format......................................... Barracuda
innodb_file_format_check................................... ON
innodb_file_format_max..................................... Barracuda
innodb_file_per_table...................................... ON
innodb_large_prefix........................................ ON
innodb_log_file_size....................................... 50331648

Also, make sure when you create your schema you create it as Latin1. That is what finally fixed me.