Bug#9112 - Merge table with composite index producing invalid results with some queries

) engine=myisam;

insert into t2 values ( null, '');

# We may have insufficient accuracy for 16 digits of '9'.

# Suppress a "truncate" warning due to accuracy problems.

--disable_warnings

insert into t2 values ( 9999999999.999999, '');

--enable_warnings

insert into t3 select * from t2;

select min(a), max(a) from t1;

flush tables;