你们这些家伙会为此开枪打死我的，很可能这不会每次都管用，当然，这违反了所有的逻辑……但我刚试过的是…停止MySQL引擎，以root身份登录，并在文件系统级别上简单地重命名数据库....

我在OSX上，只改变了情况，从bedbf到bedbf。令我惊讶的是，它竟然起作用了……

我不建议在生产DB上使用它。我只是做了个实验……

祝你好运! -)

实际上，最简单的答案是导出旧数据库，然后将其导入到您创建的新数据库中以替换旧数据库。当然，您应该使用phpMyAdmin或命令行来做到这一点。

重命名和操纵数据库是一个坏主意!不要这样做。(除非你是那种“黑客类型”的人，在黑暗中坐在妈妈的地下室里，吃着披萨，白天睡觉。)

你最终会遇到比你想要的更多的问题和工作。

So,

Create a new_database and name it the correct way. Go to your phpMyAdmin and open the database you want to export. Export it (check the options, but you should be OK with the defaults. You will get a file like or similar to this. The extension on this file is .sql -- phpMyAdmin SQL Dump -- version 3.2.4 -- http://www.phpmyadmin.net -- Host: localhost -- Generation Time: Jun 30, 2010 at 12:17 PM -- Server version: 5.0.90 -- PHP Version: 5.2.6 SET SQL_MODE="NO_AUTO_VALUE_ON_ZERO"; /*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT /; /!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS /; /!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION /; /!40101 SET NAMES utf8 */; -- -- Database: mydatab_online -- -- Table structure for table user CREATE TABLE IF NOT EXISTS user ( timestamp int(15) NOT NULL default '0', ip varchar(40) NOT NULL default '', file varchar(100) NOT NULL default '', PRIMARY KEY (timestamp), KEY ip (ip), KEY file (file) ) ENGINE=MyISAM DEFAULT CHARSET=latin1; -- -- Dumping data for table user INSERT INTO user (timestamp, ip, file) VALUES (1277911052, '999.236.177.116', ''), (1277911194, '999.236.177.116', '');

这将是您的.sql文件。你刚刚导出的那个。

在你的硬盘上找到它;通常在/temp中。选择具有正确名称(阅读本文的原因)的空数据库。 说:导入-开始

通过将程序输入到通常是configuration.php文件中，将程序连接到正确的数据库。刷新服务器(两个。为什么?因为我是UNIX老手，我说过。 现在，你的状态应该很好。如果你还有任何问题，请到网上来找我。

这里的大多数答案都是错误的，原因有两个:

不能只使用RENAME TABLE，因为可能存在视图和触发器。如果有触发器，RENAME TABLE将失败 如果你想“快速”(如问题中要求的)重命名一个大数据库，你不能使用mysqldump

Percona有一篇关于如何做到这一点的博客文章: https://www.percona.com/blog/2013/12/24/renaming-database-schema-mysql/

以及由西蒙·R·琼斯(Simon R Jones)发布的脚本(制作的?)我修复了在脚本中发现的一个错误。你可以在这里看到:

https://gist.github.com/ryantm/76944318b0473ff25993ef2a7186213d

以下是它的副本:

#!/bin/bash
# Copyright 2013 Percona LLC and/or its affiliates
# @see https://www.percona.com/blog/2013/12/24/renaming-database-schema-mysql/
set -e
if [ -z "$3" ]; then
    echo "rename_db <server> <database> <new_database>"
    exit 1
fi
db_exists=`mysql -h $1 -e "show databases like '$3'" -sss`
if [ -n "$db_exists" ]; then
    echo "ERROR: New database already exists $3"
    exit 1
fi
TIMESTAMP=`date +%s`
character_set=`mysql -h $1 -e "SELECT default_character_set_name FROM information_schema.SCHEMATA WHERE schema_name = '$2'" -sss`
TABLES=`mysql -h $1 -e "select TABLE_NAME from information_schema.tables where table_schema='$2' and TABLE_TYPE='BASE TABLE'" -sss`
STATUS=$?
if [ "$STATUS" != 0 ] || [ -z "$TABLES" ]; then
    echo "Error retrieving tables from $2"
    exit 1
fi
echo "create database $3 DEFAULT CHARACTER SET $character_set"
mysql -h $1 -e "create database $3 DEFAULT CHARACTER SET $character_set"
TRIGGERS=`mysql -h $1 $2 -e "show triggers\G" | grep Trigger: | awk '{print $2}'`
VIEWS=`mysql -h $1 -e "select TABLE_NAME from information_schema.tables where table_schema='$2' and TABLE_TYPE='VIEW'" -sss`
if [ -n "$VIEWS" ]; then
    mysqldump -h $1 $2 $VIEWS > /tmp/${2}_views${TIMESTAMP}.dump
fi
mysqldump -h $1 $2 -d -t -R -E > /tmp/${2}_triggers${TIMESTAMP}.dump
for TRIGGER in $TRIGGERS; do
    echo "drop trigger $TRIGGER"
    mysql -h $1 $2 -e "drop trigger $TRIGGER"
done
for TABLE in $TABLES; do
    echo "rename table $2.$TABLE to $3.$TABLE"
    mysql -h $1 $2 -e "SET FOREIGN_KEY_CHECKS=0; rename table $2.$TABLE to $3.$TABLE"
done
if [ -n "$VIEWS" ]; then
    echo "loading views"
    mysql -h $1 $3 < /tmp/${2}_views${TIMESTAMP}.dump
fi
echo "loading triggers, routines and events"
mysql -h $1 $3 < /tmp/${2}_triggers${TIMESTAMP}.dump
TABLES=`mysql -h $1 -e "select TABLE_NAME from information_schema.tables where table_schema='$2' and TABLE_TYPE='BASE TABLE'" -sss`
if [ -z "$TABLES" ]; then
    echo "Dropping database $2"
    mysql -h $1 $2 -e "drop database $2"
fi
if [ `mysql -h $1 -e "select count(*) from mysql.columns_priv where db='$2'" -sss` -gt 0 ]; then
    COLUMNS_PRIV="    UPDATE mysql.columns_priv set db='$3' WHERE db='$2';"
fi
if [ `mysql -h $1 -e "select count(*) from mysql.procs_priv where db='$2'" -sss` -gt 0 ]; then
    PROCS_PRIV="    UPDATE mysql.procs_priv set db='$3' WHERE db='$2';"
fi
if [ `mysql -h $1 -e "select count(*) from mysql.tables_priv where db='$2'" -sss` -gt 0 ]; then
    TABLES_PRIV="    UPDATE mysql.tables_priv set db='$3' WHERE db='$2';"
fi
if [ `mysql -h $1 -e "select count(*) from mysql.db where db='$2'" -sss` -gt 0 ]; then
    DB_PRIV="    UPDATE mysql.db set db='$3' WHERE db='$2';"
fi
if [ -n "$COLUMNS_PRIV" ] || [ -n "$PROCS_PRIV" ] || [ -n "$TABLES_PRIV" ] || [ -n "$DB_PRIV" ]; then
    echo "IF YOU WANT TO RENAME the GRANTS YOU NEED TO RUN ALL OUTPUT BELOW:"
    if [ -n "$COLUMNS_PRIV" ]; then echo "$COLUMNS_PRIV"; fi
    if [ -n "$PROCS_PRIV" ]; then echo "$PROCS_PRIV"; fi
    if [ -n "$TABLES_PRIV" ]; then echo "$TABLES_PRIV"; fi
    if [ -n "$DB_PRIV" ]; then echo "$DB_PRIV"; fi
    echo "    flush privileges;"
fi

将它保存到一个名为rename_db的文件中，并使用chmod +x rename_db使脚本可执行，然后像。/rename_db localhost old_db new_db那样使用它

这适用于所有数据库，通过使用maatkit mysql工具包重命名每个表

使用mk-find打印并重命名每个表。手册页有更多选项和示例

mk-find --dblike OLD_DATABASE --print --exec "RENAME TABLE %D.%N TO NEW_DATABASE.%N"

如果您安装了maatkit(这非常简单)，那么这是最简单的方法。

有两种方法。

重命名表old_db。table_name TO new_db.table_name; Goto操作->在那里你可以看到表选项卡。你可以在这里编辑表名。

I posted this How do I change the database name using MySQL? today after days of head scratching and hair pulling. The solution is quite simple export a schema to a .sql file and open the file and change the database/schema name in the sql CREAT TABLE section at the top. There are three instances or more and may not be at the top of the page if multible schemas are saved to the file. It is posible to edit the entire database this way but I expect that in large databases it could be quite a pain following all instances of a table property or index.