使用/etc/mysql/debian.cnf文件中[client]节提供的用户名和密码: 文件内容:[client]host = localhostuser = debian-sys-maint //用户名password = Xgsuj2n8rlvw7jUO //密码socket = /var/run/mysqld/mysqld.sock[mysql_upgrade]host = localhostuser = debian-sys-maintpassword = Xgsuj2n8rlvw7jUOsocket = /var/run/mysqld/mysqld.sockbasedir = /usr在命令行输入:# mysql -udebian-sys-maint -p Enter ...
nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. ### The error may exist in file [D:\JavaProject\da...
在使用mysqlbinlog分析日志时,报错:/usr/local/mysql/bin/mysqlbinlog: unknown variable ‘default-character-set=utf8‘原因分析:产生这个问题的原因是因为我在my.cnf中的client选项组中添加了:
default-character-set=utf8
这个是mysqlbinlog的一个bug解决方法:使用mysqlbinlog工具查看二进制日志时会重新读取的mysql的配置文件my.cnf,而不是服务器已经加载进内存的配置文件。
只要修改并保存了my.cnf文件,而不需要重起...
由于电脑死机,导致MySQL无法重启。解决方案看官方文档,设置完后重启失败,再把innodb_force_recovery = 1去掉就可以了https://dev.mysql.com/doc/refman/5.7/en/forcing-innodb-recovery.html原文:https://www.cnblogs.com/ailhc/p/9481857.html
1、首先确认报错的binlog和last event。2、然后去主的机器上查看该报错的内容和报错的的位置,如果是结尾报错的,可以直接从新的binlog进行同步。 #/mysql/logs# ../bin/mysqlbinlog --start-position=506063695 mysql-bin.000159 | less3、看到报错是该文件的最后一个值(binlog异常关闭引起),可以直接在从上定义同步起始点,进行同步。mysql> change master to master_log_file=‘mysql-bin.000160‘,master_log_pos=4注:新的...
在装有数据库的那台电脑,登入mysql后,更改 "mysql" 数据库里的 "user" 表里的 "host" 项,从"localhost"改称"%":2登入MySQL:~$ mysql -u root -pEnter password:3切换数据库,mysql>use mysql;查看root账号的登录权限,mysql>select host, user from user;修改登录权限mysql>update user set host = ‘%‘ where user = ‘root‘;刷新,生效,最后一步,至关重要mysql>flush privileges;原文:https://www.cnblogs.com/Jack-zhao/p/...
在用到mysql update in的时候报错update area set status=‘ON‘ where id in(select id from area where status=‘ON‘ and name like ‘%市辖%‘)[SQL]update area set status=‘ON‘ where id in(select id from area where status=‘ON‘ and name like ‘%市辖%‘)
[Err] 1093 - You can‘t specify target table ‘area‘ for update in FROM clause下面语句可以通过update area a inner join(select id from area where i...
mysqlbinlog 查看binlog日志时报错unknown variable ‘default-character-set=utf8‘ 在通过全备文件和增量binlog文件来导出sql文件,用以恢复完整的数据库时。由于裸的binlog文件是无法直视的,所以使用mysqlbinlog这个工具是用来查看binlog文件内容的(使用方式man mysqlbinlog查看),但是使用mysqlbinlog将binlog文件转换成人类可读的内容时却报错:[root@server data]$ mysqlbinlog mysql-bin.000009
mysqlbinlog: ...
重新安装mysql时,运行systemctl status mysqld.service报错。[root@test-dcruxue ~]# systemctl start mysqld.serviceJob for mysqld.service failed because the control process exited with error code. See "systemctl status mysqld.service" and "journalctl -xe" for details.查看mysql服务状态[root@test-dcruxue ~]# systemctl status mysqld.service● mysqld.service - MySQL Server Loaded: loaded (/usr/lib/syst...
安装 mysqldb (pip3 install Flask-MySQLdb)报错 EnvironmentError: mysql_config not found ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.或者出现 error: command ‘x86_64-linux-gnu-gcc‘ failed with exit status 1 解决方案:参考Github上的答案(https://github.com/scrapy/scrapy/issues/2115#issuecomment-231849637),成功解决。with Python 3,...
具体什么原因我也没找到,我介绍下我的做法1. 重新配置一个纯净的虚拟环境,安装需要的依赖环境2. 重启pycharm3. 安装pymysql遇到了版本低的问题,我参照网上的方法 https://blog.csdn.net/knight_zhou/article/details/108576312 解决了问题,此处简单记录下找到对应的 import pymsql 所在的文件,并如下替换import pymysql
pymysql.version_info = (1, 4, 13, "final", 0)
pymysql.install_as_MySQLdb() ' has no att...
环境:windows10+Python3.6安装Python下载路径:https://www.python.org/downloads/windows/ 选择自己的版本直接安装,然后配置环境变量650) this.width=650;" src="/upload/getfiles/default/2022/11/8/20221108091618682.jpg" title="1.png" />3.安装pymysql 这里我是直接用pip安装的,命令: pip install pymysql4.连接数据库 import pymysql# 打开数据库连接db = pymysql.connect("localhost","develop","5tgb^YHN","test" )...
今天晚上电脑上的数据库突然抽风,怎么也连不上了,查了好久的资料说可能是跟我在本机搭建的java项目有关,跟着资料弄了半天,问题还是没有解决,只好另求出路。想起之前安装过一个linux虚拟机,就想借用虚拟机上的sql,没想到在写分组查询的时候一直报下面这个错:ERROR 1055 (42000): Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column ‘user.t_user.name‘ which is not functionall...
MySQL5.7.27报错“[Warning] Using a password on the command line interface can be insecure.”在命令行使用密码不安全警告原因这个错误是在我执行备份脚本的时候出现的# mysqldump -h主机名 -u用户名 -p密码 数据库名称 > /usr/local/dbbackup/数据库名称_$(date +%Y%m%d_%H%M%S).sql原因是mysql的安全机制导致,因为在命令行直接将命令写上,被认为是不安全的行为mysqldump: [Warning] Using a password on the command line ...
0、环境本文操作系统: CentOS 7.2.1511 x86_64
MySQL 版本: 5.7.19
安装之前先把开发环境装一下yum -y installgccgcc-c++ autoconf automake zlib zlib-devel openssl openssl-devel pcre* make gd-devel libjpeg-devel
libpng-devel libxml2-devel bzip2-devel libcurl-devel glib2 glib2-devel GeoIP-devel ncurses-devel zlib zlib-devel yum install gcc* net-tools perl yum -y groupinstall "Development Tools" ##会...