搜索结果
查询Tags标签: because,共有 44条记录-
ERROR "Host is blocked because of many connection errors; unblock with 'mysqladmin flus
ERROR com.alibaba.druid.pool.DruidDataSource - create connection SQLException, url: jdbc:mysql://hadoop108:3306/FlinkEtl?useUnicode=true&characterEncoding=UTF-8&serverTimezone=GMT&useSSL=false, errorCode 1129, state HY000java.sql.SQLExcep…
2022/8/22 2:26:52 人评论 次浏览 -
大写字母为啥叫capital
capital有罗马式圆柱的柱头的意思:SPQR这几个字母是大写。可理解为写在柱头上的那种写法。he letters SPQR are the abbreviation of the Latin phrase Senatus Populusque Romanus, which translates to "The Senate and People of Rome". Why Do We Use Capi…
2022/7/30 23:26:39 人评论 次浏览 -
null, message from server: "Host '10.155.58.1' is blocked because of many connection
错误原因是: 数据库多次连接错误,屏蔽了当前ip的连接请求解决方法有两种:1、登录mysql mysql -uroot -p flush hosts2、navicat连接数据库后,选中该数据库右键点刷新->权限
2022/7/28 2:27:23 人评论 次浏览 -
对数运算法则之证明
\begin{array}{c}proof:\quad \log_{a}{x^n}=n\log_{a}{x}\\设:\log_{a}{x}=m,\quad 即a^m=x\\则:\log_{a}{x^n} \Rightarrow \log_{a}{(a^m)^n} \Rightarrow \log_{a}{a^{mn}}\\\because a^m=x,\quad \log_{a}{x}=m\\\therefore \log_{a}{a^m}=m\\\therefore \log_{a}{a^…
2022/3/26 9:22:47 人评论 次浏览 -
mysql启动报错Job for mysqld.service failed because the control process exited with error code.
Job for mysqld.service failed because the control process exited with error code. See "systemctl status mysqld.service" and "journalctl -xe" for details. 这个错误在mysql启动出错会报出 按照它的指示执行"systemctl status mysqld.s…
2022/3/20 19:32:30 人评论 次浏览 -
Ubuntu18.04——问题解决:外接显示器无反应 且 NVIDIA-SMI has failed because it couldn‘t communicate .....
问题描述 外接显示器无反应;输入nvidia-smi发现报错: 测试 重启电脑, 在ubuntu 启动过程中选择Advanced options for Ubuntu的前一个版本运行. 输入:nvidia-smi发现是正常的,同时外接显示器也能正常显示. 问题原因 NVIDIA驱动是在低版本的时候安装,由于系统更新,内核版…
2022/2/21 7:26:45 人评论 次浏览 -
USTC English Club Note20211206
#Musical Introduction# Waitress Theres one thing I have to mention first. If you couldnt accept one to have an affair with someone or sexual content, youd better not watch it. Many main characters of it all have an affair with others. This musical m…
2022/2/1 6:59:48 人评论 次浏览 -
USTC English Club Note20211229
#Golden Lines Series# #Rick and Morty#We’re gonna live our lives until we die. 一直活着,到死为止。That’s planning for failure,Morty,even dumber than regular planning. 别为失败做打算,比庸常的打算还要愚蠢。They just put you at the center of their l…
2022/1/31 6:06:06 人评论 次浏览 -
IDEA启动项目报错:Caused by: java.io.FileNotFoundException: class path resource [.properties] cannot be ope
IDEA启动项目报错 Caused by: java.io.FileNotFoundException: class path resource [.properties] cannot be opened because it does not exist 解决方法: 1.检查文件的路径是否正确,命名是否一致,是否存在该文件。 2.检查Target的classes文件夹下是否有这个文件,把…
2022/1/24 22:05:02 人评论 次浏览 -
【2022-01-23】Linux 下编译 Python 并安装后,pip install 总是提示 SSLError 并安装失败的解决办法
There was a problem confirming the ssl certificate: Can’t connect to HTTPS URL because the SSL module is not available. 原因:依赖没有安装完全。 解决办法: sudo apt install build-essential zlib1g-dev libncurses5-dev libgdbm-dev libnss3-dev libssl-dev…
2022/1/24 7:06:16 人评论 次浏览 -
【Clickhosue】MySQL 没有主键导致CK不可用 The db.scene cannot be materialized, because there is no primary keys
1.概述 首先参考文章:【clickhouse】clickhouse表引擎之MaterializeMySQL引擎 主要是遇到一个问题。需要注意的是20.8版本目前还不是稳定版,如果mysql中没有设置主键字段时,会在创建MaterializeMySQL数据库时报错: DB::Exception: The db.scene cannot be materialized…
2021/12/19 19:21:28 人评论 次浏览 -
【Clickhosue】MySQL 没有主键导致CK不可用 The db.scene cannot be materialized, because there is no primary keys
1.概述 首先参考文章:【clickhouse】clickhouse表引擎之MaterializeMySQL引擎 主要是遇到一个问题。需要注意的是20.8版本目前还不是稳定版,如果mysql中没有设置主键字段时,会在创建MaterializeMySQL数据库时报错: DB::Exception: The db.scene cannot be materialized…
2021/12/19 19:21:28 人评论 次浏览 -
MybatisPlusException: error: can not execute. because can not find column for id from entity
问题 使用mybatis-plus时 ,使用了方法saveOrUpdate,出现问题com.baomidou.mybatisplus.core.exceptions.MybatisPlusException: error: can not execute. because can not find column for id from entity! 解决 可以看到:can not find column for id from entity! 所以…
2021/12/16 23:43:31 人评论 次浏览 -
MybatisPlusException: error: can not execute. because can not find column for id from entity
问题 使用mybatis-plus时 ,使用了方法saveOrUpdate,出现问题com.baomidou.mybatisplus.core.exceptions.MybatisPlusException: error: can not execute. because can not find column for id from entity! 解决 可以看到:can not find column for id from entity! 所以…
2021/12/16 23:43:31 人评论 次浏览 -
shell 脚本模板
#!/usr/bin/env bash #this srcipt is to do wheat_bsa #author lee#this is fail test, because bash didnt care about the failure of command #this can prevent the situation that check result of each step, only right can go on set -Eeuo pipefail#display for…
2021/11/16 7:13:28 人评论 次浏览