2.2.9.sql

来自「清华大学出版社出版的数据库系统教程附带的实验教程中所有的源代码」· SQL 代码 · 共 10 行

Alter table ICBC_Card
   drop constraint FK__ICBC_Card__stu_c__6c190EBB;
Alter table ICBC_Card
   add constraint FK_ICBC_Card foreign key (stu_card_id) 
                references Stu_card(card_id) on delete no action ;