create table t1 (s1 tinytext character set utf8);
insert into t1 select repeat('a',100);
insert into t1 select repeat('Ñ',87);
#insert into t1 select repeat('aÑ',300);
#insert into t1 select repeat('Ña',300);
#insert into t1 select repeat('ÑÑ',300);
#select hex(s1) from t1;
select length(s1),char_length(s1) from t1;
drop table t1;

#create table t1 (s1 text character set utf8);
#insert into t1 select repeat('a',66000);
#insert into t1 select repeat('Ñ',66000);
#insert into t1 select repeat('aÑ',66000);
#insert into t1 select repeat('Ña',66000);
#insert into t1 select repeat('ÑÑ',66000);
#select length(s1),char_length(s1) from t1;
#drop table t1;