39 attribute has has_key

Oracle TO_CHAR(待格式化数据, 'FM99999990.00')

作用:对数据进行格式化 ①其9代表:如果存在数字则显示数字,不存在则显示空格 ②其0代表:如果存在数字则显示数字,不存在则显示0,即占位符。 ③其FM代表:删除如果是因9带来的空格,则删除之 ......
99999990.00 99999990 TO_CHAR 格式 数据

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '?' 问题的解决

问题描述 显示在条件查询的sql语句那里报错 问题解决 本来我是习惯了使用servlet写数据库操作的,然后就直接忽略掉了,或者说,直接忘记了在jsp里面的sql语句怎么正确书写了; 经过查阅资料发现,查询语句是这样写的: String sql="select * from book where i ......
syntax your corresponds the version

OpenGL学习笔记-3:编译shader报错: cannot convert from 'const highp float' to 'FragUserData 4-component vector of highp float'

报错信息: ERROR::SHADER_COMPILATION_ERROR of type: FRAGMENTERROR: 0:10: 'assign' : cannot convert from 'const highp float' to 'FragUserData 4-component ve ......
float highp 39 FragUserData component

flink Connecting to remote task manager 'localhost/127.0.0.1:44489

问题: 启动集群后,执行任务时失败: Caused by: org.apache.flink.runtime.io.network.partition.consumer.PartitionConnectionException: Connection for partition 47d4a41224 ......
Connecting localhost manager remote flink

【五期邹昱夫】CCF-A(NeurIPS'19)Inverting gradients-how easy is it to break privacy in federated learning?

"Geiping J, Bauermeister H, Dröge H, et al. Inverting gradients-how easy is it to break privacy in federated learning?[J]. Advances in Neural Informat ......

WARNING: Running pip as the 'root' user can result in broken permissions and conflicting behaviour with the system package manager......

pip install -r requirements.txt 报错"WARNING: Running pip as the 'root' user can result in broken permissions and conflicting behaviour with the system ......

Docker容器运行jar包,显示错误:Failed to start thread "GC Thread#0" - pthread_create failed(EPERM) for attributes :stacksize:1024k,guardsize:4k,detached

问题: Docker容器运行jar包,显示错误:Failed to start thread "GC Thread#0" - pthread_create failed(EPERM) for attributes :stacksize:1024k,guardsize:4k,detached 问题解决 ......

MySQL连接失败解决方法can't connect to local MySQL server through socket '/tmp/mysql.sock'(111)

【报错信息】 can't connect to local MySQL server through socket '/tmp/mysql.sock'(111) 【问题描述】 新服务器上安装MySQL后无法正常启动,提示连接失败。 【问题分析】 出现这个问题主要是mysql配置错误,找不到mysql ......
MySQL 39 connect through 方法

How to use Linux command or Python code get Raspberry PI's Temperature All In One

How to use Linux command or Python code get Raspberry PI's Temperature All In One 如何使用 Linux 命令或 Python 代码获取 Raspberry PI 的温度 ......
Temperature Raspberry command Python Linux

java泛型'T'与'?'基本知识

结论:'T'指的是某一类具体的对象,'?'可以表示成占位符,表明多种数据类型; 示例:可以看到show1方法中我们使用了T,大家都知道这是泛型的常见写法,那么这里的T指的是某一类具体的对象,list集合里只能存放同一类型数据,如果插入不同类型数据则会报错。那么show2方法中我们使用的是?,可以看到 ......
39 基本知识 知识 java

[ERROR] [MY-012263] [InnoDB] The Auto-extending innodb_system data file './ibdata1' is of a different sizethan specified in the .cnf file: initial 65536 pages, max 0 (relevant if non-zero) pages!

实际my.cnf发现里面的innodb_data_file_path = ibdata1:1G:autoextend 设置得太大,我这机器容量小,所以调到12M , innodb_data_file_path = ibdata1:12M:autoextend ......

Mixed Content: xxx This request has been blocked; the content must be served over HTTPS

1.情景展示 这是教师资格证,准考证的下载界面。 当我们去点击“下载准考证”的时候,你将发现点击该按钮并没有反应。 按F12,打开开发者工具。 该网站,会自动进入断点调试模式,目的是为了:禁止前端开发者查看网页代码之类的吧。 我们要想看看,为什么无法下载准考证,就不能够被它拦住。 解决办法: 第一步 ......
Content request blocked content served

[Warning] World-writable config file '/etc/my.cnf' is ignored

告警信息,全局读写配置文件,那么就把权限调整小。 ......

django使用django-apscheduler为什么总是提示2006,server has gone away

最近使用django在做一个定时任务场景,采用的是gjango-apscheduler模块,出现了一个问题,我的定时场景是每天的8点和17点启动一个任务,但是每次只能第一次生效,第二天就会出现2006,server has gone away这个错误,看到错误的第一反应就是数据库服务挂了??因为看详 ......

无法解析符号 'Date'

在程序运行的过程中无法导入,请关闭程序后正在导入 ......
符号 39 Date

运行pycharm报错ModuleNotFoundError: No module named 'psutil'

解决办法: psutil库要和电脑的python版本还有系统匹配才可以,我个人是不建议直接用pycharm的插件库来安装第三方包的,他是直接用pycharm安装所以不成功,我去官网下载了匹配他系统的版本再安装就成功了 1、upgrade进行升级 ......

django-datatable-view==0.9.0 Django 3.1.3: ImportError:无法导入名称'FieldDoesNotExist‘

问题答案来自于:https://cloud.tencent.com/developer/ask/sof/891274源码: from django.db.models.fields import FieldDoesNotExist 替换: from django.core.exceptions im ......

ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts

报错原因: ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the f ......
dependency the currently behaviour conflicts

'hello'.split('e')[::-1] # ['llo', 'h']

'hello'.split('e')[::-1] # ['llo', 'h'] lst = [1,2,3] lst.append(4,5) # append() takes exactly one argument (2 given) a = 2 ; b = 3 print(eval('a*b')) ......
39 hello split llo

关于Kubernetes-v1.23.6-初始化时报错[kubelet-check] It seems like the kubelet isn't running or healthy

笔者今天在对k8s,v1.23.6版本的的master节点使用如下命令进行初始化时 [root@k8s-master qq-5201351]# kubeadm init \ > --apiserver-advertise-address 192.18.106.87 \ > --image-repos ......

TypeError: 'numpy.float64' object cannot be interpreted as an integer

报错内容: Traceback (most recent call last): File "C:\Users\xuan\.conda\envs\pytorch1-6\lib\site-packages\scipy\sparse\_sputils.py", line 225, in isintlik ......
interpreted TypeError integer cannot object

安装msi软件报错:The installer has encountered an unexpected error installing this package.The error code is 2503

因为安装权限不足 以管理员身份运行cmd 运行安装命令 msiexec /package "E:\xxx\charles-proxy-4.6.4-win64.msi" ......
error encountered installing unexpected The

onclick="document.location.hash='form';return false;"

onclick="document.location.hash='form';return false;" 这是一个JavaScript代码段,它绑定了一个单击事件(onclick)到某个HTML元素上,当该元素被单击时,它会将当前页面的哈希值(hash)设置为 "form",并返回 false,以 ......
quot amp document location onclick

Error: <path> attribute d: Expected arc flag ('0' or '1'), "…a6.226 6.226 0 vhb bvg gvfb011.…".

Error: attribute d: Expected arc flag ('0' or '1'), "…a6.226 6.226 0 vhb bvg gvfb011.…". 这是一个SVG(可缩放矢量图形)中元素的错误消息。在SVG中,元素用于定义形状的轮廓,通常使用一个或多个路径命令来描述路径 ......
39 quot 226 attribute Expected

使用nacos配置,启动服务时一直报 Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. APPLICATION FAILED TO START

报错日志如下: Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.-2023-05-05 09:46:02.328 [TID ......

浅谈(0,eval)('window')

浅谈(0,eval)('window') 最近研究qiankun 源码,在import-html-entry 包中看到这个,一脸懵,研究了一下,记录一下。参考了这篇博客 这个干啥用的 // 通过这种方式获取全局 window,因为 script 也是在全局作用域下运行的,所以我们通过 window. ......
window eval 39

AttributeError: module 'dgl.function' has no attribute 'copy_src'

报错: AttributeError: module 'dgl.function' has no attribute 'copy_src' 错误解析: copy_src(来源,输出)使用源节点功能计算消息的内置消息函数。 这个函数在包里面没有,本应该是有这个功能函数的 解决方法: 自己构造一个对应的 ......

The plugin distribution bundles IDE packages 'com.intellij.uiDesigner.core',

错误描述: The plugin distribution bundles IDE packages 'com.intellij.uiDesigner.core', 'com.intellij.uiDesigner'. Bundling IDE packages is considered bad ......

日程报告39

代码时间(包括上课):6h 代码量(行):0 博客数(篇):1 今天在课堂上了解到preparestatement和statement的区别 preparestatement 可以接受参数,例如新增数据的SQL语句中新增内容可以用?代替 但是statement中SQL语句中新增内容需要用具体内容,注 ......
日程 报告

CI3报错The URI you submitted has disallowed characters

报错: An Error Was Encountered The URI you submitted has disallowed characters. 遇到错误 您提交的URI包含不允许的字符。 解决方法: 1、打开application/config/config.php 2、找到$confi ......
disallowed characters submitted CI3 The