获取mysql中删除的主键列表

I have a Parent table A with following attributes(columns) { PKA, a1, a2...} and child table B with following attributes {FKA, b1, b2...} PKA is the primary key (auto increment) for table A and table B does not have any primary keys but it has a Foreign key column FKA that references PKA column of table A ( 1: n relationship)I have a Parent table A with following attribut