mybatis-plus 常用api

Mybatis-Plus 只查询某些字段

select

    @Test
    public void selectByWrapper10() {
    list = this.list(new QueryWrapper<AlertSuperviseCorrelationEntity>().select("supervise_department_name").eq("org_id", orgId).groupBy("supervise_department_name"));
    }

Update

UpdateWrapper<User> updateWrapper = new UpdateWrapper<>();
updateWrapper.eq("name","shimin").set("age", 35);

Integer rows = userMapper.update(null, updateWrapper);