关联查询后怎么删除子(100分)

SELECT a.TeacherId, a.TeacherKnowleageTime, a.TeacherKnowleageSchool, a.TeacherKnowleagSPeciality, a.TeacherKnowleageLongtime,a.TeacherKnowleageDeagree, b.TeacherName
FROM "knowleage.DB" a,"teacher.DB" b
where a.TeacherId=b.TeacherId
用此方法生成在dbgrid内怎么在dbgrid内删除子表，或另外一种可行的办法，可实现
删除后马上体现出来。

1.delete * from 子表 where 子表.字段=条件
2.query.active:=false;
query.active:=true;//刷新你所写的select

接受答案了.