File: btree_varchar_null.test

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#
# MDEV-4813 Replication fails on updating a MEMORY table with an index using btree
#
create table t1 (f1 varchar(128), f2 varchar(128), key (f2,f1) using btree) engine=memory;
insert into t1 values (null,'not'),('one',null),('two',null),('three','');
select * from t1 where f1 = 'one'  and f2 is null;
drop table t1;