oracle 外键操作

– 创建

alter table 表名 add constraint 外键名 foreign key(从表外键字段) references foreign_main(主表外键字段);

– 查询外键

select table_name, constraint_name from user_constraints where constraint_type = 'R';

– 禁用外键

select 'alter table SYS_MENU disable constraint FK_SYS_MENU_REFERENCE_SYS_RESO;' from user_constraints where constraint_type = 'R';

alter table SYS_MENU disable constraint FK_SYS_MENU_REFERENCE_SYS_RESO;

– 启用外键

select 'alter table SYS_MENU enable constraint FK_SYS_MENU_REFERENCE_SYS_RESO;' from user_constraints where constraint_type = 'R';  

alter table SYS_MENU enable constraint FK_SYS_MENU_REFERENCE_SYS_RESO;

– 删除外键

select 'alter table SYS_MENU drop constraint FK_SYS_MENU_REFERENCE_SYS_RESO;' from user_constraints where constraint_type = 'R'; 

alter table SYS_MENU drop constraint FK_SYS_MENU_REFERENCE_SYS_RESO;

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