postgresql存储过程

1.为了防止误用，设置了一个参数operation,必须为insert时才生效;

2.在新增操作过程中，如果抛出异常中断，会回滚。

 

CREATE OR REPLACE FUNCTION fun_insert_into_tb_sys_vul_event2(operation text) RETURNS void AS
$$
BEGIN
    IF operation != 'insert' THEN
       RAISE EXCEPTION '参数错误！参数应该为insert!'; 
       RETURN ;
    else
    -- 为了避免重复录入，每次运行前先清空sys_vul_event表
    delete from sys_vul_event2;
    --RAISE EXCEPTION '删除失败！'; 
    --CVE披露事件 type=1
    insert into sys_vul_event2(sys_vul_id, event_date, type) select id, date_exposure, 1 as type from sys_vul where date_exposure is not NULL;
    --Google bulletin公开事件 type=2
    insert into sys_vul_event2(sys_vul_id, event_date, source, type) select id, date_bulletin, source, 2 as type from sys_vul where date_bulletin is not NULL;
    --提供修复patch事件 type=3
    insert into sys_vul_event2(sys_vul_id, event_date, type) select id, date_fixed, 3 as type from sys_vul where date_fixed is not NULL;
    --poc,exp公开事件 poc type=5;exp type=6
    insert into sys_vul_event2(sys_vul_id, event_date, type) select sys_vul_id, exposed_date, case when type='exp' then 6 when type='poc' then 5 end as type from security_matter;
    END IF;
    EXCEPTION WHEN others THEN  
    RAISE EXCEPTION '(%)', SQLERRM; 
    ROLLBACK;
END;
$$ LANGUAGE PLPGSQL; 

 rollback就相当于结束了，和return差不多。