我有三张桌子A,B,C
Table A (
idA1 int unsigned not null,
idA2 int unsigned not null,
primary key(idA1, idA2)
)
Table B (
idB1 varchar(36) not null,
primary key(idB1)
)
Table C (
idC1 int unsigned not null,
idC2 varchar(36) not null,
idC3 int unsigned not null,
primary key(idC1, idC2, idC3),
foreign key(i