1、打开cmd，输入mysql -u 用户名 -p回车根据提示输入密码，如下图。2、进入mysql数据库控制台，界面如下。3、查看当前数据库中存在那些数据库，使用show databases语句。如下。4、使用show create database 数据库名 格式来查看数据库的详细创建信息。通过在show create database语句后面追加 \G参数来...
default_storage_engine=MaterializeMySQL 1. 2. 保存并关闭文件。 完成配置文件的修改后,重启 MySQL 服务: sudoservicemysql restart 1. 结论 通过按照上述步骤检查和修改数据库配置,你应该能够解决 “DB::Exception: Unknown database engine: MaterializeMySQL. (UNKNOWN_DATABASE_” 这个问题。如果问题仍然存在,你可...
rcmysql stop pkill mysql (NOTE: wait until notification is given that mysqld ended, then hit <ENTER>) /usr/bin/mysql_install_db Now that the above steps have been run, check and make sure that the database was created: cd /var/lib/mysql ls -al | grep mysql In the listing output ...
Unknown database 'sky:', Cause: null State: 42000. FWIW, Perl has no problem. This code works: --- #! /usr/bin/perl -w use strict; use DBI; my $server = 'localhost'; my $db = "sky"; my $usr = "guest"; my $pw = "welcome"; my...
Unknown database 'DB_NAME' Cannot create PoolableConnectionFactory (Unknown database'DB_NAME'): com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database'DB_NAME' Because, there was no Database scheme in the mysql database engine. So, to solve this:...
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'db_item' 一直很奇怪,为什么报错,进入mysql命令行,show databases;发现多谢了一个空格,如上图。
3、在root目录下创建mysql-master文件夹,在mysql-master文件夹下创建conf和data文件夹。 mkdir mysql-master mkdir -p~/mysql-master/conf ~/mysql-master/data 4、将mysql-demo容器内的/etc/mysql/my.cnf文件拷贝到~/mysql-master/conf目录下 docker cp mysql-demo:/etc/mysql/my.cnf ~/mysql-master/conf ...
创建数据库:如果你还没有创建bookmanagement数据库,你应该在 MySQL 中创建它。使用以下 SQL 语句: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 CREATEDATABASEBookManagement; 确保在运行此命令时使用了足够权限的 MySQL 用户。 使用已存在的数据库:如果你已经有一个用于此目的的其他数据库,你可以在连接字符...
why>d:\backup_why20171106.sql错误的写法D:\mariadb\bin>mysqldump -uroot -p why>d:\backup_why20171106.sql;;;不要分号搜一下：我备份MYSQL出现:mysqldump:Goterror:1049:Unknowndatabase'mydata'whenselectingthedata
Unknown database 'sky:', Cause: null State: 42000. FWIW, Perl has no problem. This code works: --- #! /usr/bin/perl -w use strict; use DBI; my $server = 'localhost'; my $db = "sky"; my $usr = "guest"; my $pw = "welcome"; my...