--source include/not_embedded.inc
--source include/have_ucs2.inc

create or replace table t1 (col1 char(10) character set ucs2, filler char(100), key(col1)) ;
insert into t1 values ('a', 'a');
insert into t1 values ('a', 'a');
set optimizer_trace=1;
explain format=json select * from t1 force index(col1) where col1 >='a';
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives')) AS JS from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
drop table t1;