ALTER TABLE t1
algorithm=inplace,
add column c int;
Warnings:
Warning	1478	Converted FIXED field 'c' to DYNAMIC to enable online ADD COLUMN
set @@ndb_use_copying_alter_table = 1;
ALTER TABLE t1
add column d int;
set @@ndb_use_copying_alter_table = default;
set @@ndb_use_copying_alter_table = 1;
ALTER TABLE t1
algorithm=inplace,
add column e int;
Warnings:
Warning	1478	Converted FIXED field 'e' to DYNAMIC to enable online ADD COLUMN
set @@ndb_use_copying_alter_table = default;