我将首先显示所有必要的代码,为每个问题中的每一个(这是在另一个内部为每个目前正在工作)。
模型:
class HmsBbrGroupUser extends Model
{
public $timestamps = false;
protected $table = 'hms_bbr_group_user';
}
表:
控制器:(翻译的SQL查询)
use App\Models\HmsBbrGroupUser;
public function fetchgroupuser() {
$all_group_users = HmsBbrGroup
有错误声明
一个或多个实体的验证失败。有关详细信息,请参阅“EntityValidationErrors”属性。
当我触发SaveChangesAsync()函数时。请参阅下面的代码:
using (var context = new CommonDBContext()) {
var bbrs = await context.Table1
.ToListAsync();
var lastIndexToRemove = pimc.Result.IndexOf("UIX/");
if (lastIndexToRemove >
我知道有几个相关的帖子,它们给了我很大的帮助,但我仍然不能做到这一点。在运行代码不会导致错误的情况下,我在csv文件中什么也没有得到。我有下面的Scrapy爬虫,它从一个网页开始,然后跟随一个超链接,然后抓取链接的页面:
from scrapy.http import Request
from scrapy.spider import BaseSpider
from scrapy.selector import HtmlXPathSelector
from scrapy.item import Item, Field
class bbrItem(Item):
Year = Field
我试图在本机查询中传递存储过程的参数,url是
存储过程
Alter PROCEDURE [dbo].[Sample]
@BatteryBankID Int,
@fromDate DateTime,
@toDate DateTime
AS BEGIN
select
bbr.StrVoltage,bbr.ChrgCurr
from BatteryBankReadings bbr
where bbr.BatteryBankID = @BatteryBankID
and ReadTime between @fromDate and @toDate
END
GO
存储库
public int
我有一个列名的表。我想把它按名字列表排序,然后按其他列排序。
例如,这是一个列表:
RAM
DPR
OOM
表数据:
name
---
ABI
TRE
BBR
DPR
OOM
RAM
查询结果如下:
name
---
RAM
DPR
OOM
ABI
BBR
TRE
我不知道如何开始查询,只知道:
select name from tab order by ....
例如,以下命令生成generic、server和virtual。
$ apt-cache search linux-image-3
linux-image-3.0.0-15-generic - Linux kernel image for version 3.0.0 on x86/x86_64
linux-image-3.0.0-15-server - Linux kernel image for version 3.0.0 on x86_64
linux-image-3.0.0-15-virtual - Linux kernel image for version 3.0.0 on x86
我有一个运行ubuntu自动安全更新的服务器,/boot现在几乎已经满了(93%)。下面是dpkg -l "linux-image*“的输出。
ii linux-image-3.2.0-24-generic 3.2.0-24.39 Linux kernel image for version 3.2.0 on 64 bit x86 SMP
ii linux-image-3.2.0-36-generic 3.2.0-36.57
select Month(user_lastlogin) as Month,year(user_lastlogin) as Year,
count(*) as 'Total Reg' from bb_user
group by Month(user_lastlogin),year(user_lastlogin)
order by Month desc
select count(*) as 'LR Reg' from bb_user
where user_regtype ='LR'
group by Month(u
我运行的是Linux22.04LTS,我对LinuxKernel方面还很陌生。我想尝试一下low-latency内核,在挖掘的时候,我注意到我已经安装了几个版本。
dpkg --list | grep linux-image
返回:
rc linux-image-6.0.12-76060006-generic 6.0.12-76060006.202212290932~1674139725~22.04~ca93ccf amd64 Linux kernel image for version 6.0.12 on 64 bit x86 SMP
ii li
如果运行建议的命令行,安全性如何。有窃听器吗?
The following packages were automatically installed and are no longer required:
linux-headers-4.15.0-32 linux-headers-4.15.0-32-generic
linux-headers-4.15.0-33 linux-headers-4.15.0-33-generic
linux-headers-4.15.0-34 linux-headers-4.15.0-34-generic
linux-image-4.15.0-
我对一台服务器有问题。一段时间前,有一个可靠的安装,然后我升级到异种。问题是,看起来他不想要更新的内核;)
% uname -a
Linux 36猴子3.11.0-12-泛型#19-Ubuntu 10月9日16:12:00 UTC 2013 i686 GNU/Linux
嗯,3.11?但是为什么呢?
% apt list --installed|grep linux
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
console-setup-linux/xenial-update