ImplicitCompositeKeyJoinTest#testImplicitCompositeJoin fails due to dialect-specific differences in generated SQL string for Oracle, Sybase, and MySQL.

Expected SQL:

create table Employee (age varchar(15) not null, birthday varchar(255) not null, name varchar(20) not null, manager_age varchar(15), manager_birthday varchar(255), manager_name varchar(20), primary key (age, birthday, name))

oracle12c:
create table Employee (age varchar2(15 char) not null, birthday varchar2(255 char) not null, name varchar2(20 char) not null, manager_age varchar2(15 char), manager_birthday varchar2(255 char), manager_name varchar2(20 char), primary key (age, birthday, name))

sybase 15.7
create table Employee (age varchar(15) not null, birthday varchar(255) not null, name varchar(20) not null, manager_age varchar(15) null, manager_birthday varchar(255) null, manager_name varchar(20) null, primary key (age, birthday, name)) lock datarows

mysql 5.7
create table Employee (age varchar(15) not null, birthday varchar(255) not null, name varchar(20) not null, manager_age varchar(15), manager_birthday varchar(255), manager_name varchar(20), primary key (age, birthday, name)) ENGINE=InnoDB