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

TodoInTX的存储过程不太适合我。以下是我的尝试:

-- stored procedure rename_db: Rename a database my means of table copying.
-- Caveats: 
-- Will clobber any existing database with the same name as the 'new' database name.
-- ONLY copies tables; stored procedures and other database objects are not copied.
-- Tomer Altman (taltman@ai.sri.com)

delimiter //
DROP PROCEDURE IF EXISTS rename_db;
CREATE PROCEDURE rename_db(IN old_db VARCHAR(100), IN new_db VARCHAR(100))
BEGIN
    DECLARE current_table VARCHAR(100);
    DECLARE done INT DEFAULT 0;
    DECLARE old_tables CURSOR FOR select table_name from information_schema.tables where table_schema = old_db;
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;

    SET @output = CONCAT('DROP SCHEMA IF EXISTS ', new_db, ';'); 
    PREPARE stmt FROM @output;
    EXECUTE stmt;

    SET @output = CONCAT('CREATE SCHEMA IF NOT EXISTS ', new_db, ';');
    PREPARE stmt FROM @output;
    EXECUTE stmt;

    OPEN old_tables;
    REPEAT
        FETCH old_tables INTO current_table;
        IF NOT done THEN
        SET @output = CONCAT('alter table ', old_db, '.', current_table, ' rename ', new_db, '.', current_table, ';');
        PREPARE stmt FROM @output;
        EXECUTE stmt;

        END IF;
    UNTIL done END REPEAT;

    CLOSE old_tables;

END//
delimiter ;

如果您使用分层视图(视图从其他视图中提取数据)，从mysqldump导入原始输出可能无法工作，因为mysqldump不关心视图的正确顺序。因此，我编写了脚本，重新排序视图，以纠正飞行中的顺序。

它是这样的:

#!/usr/bin/env perl

use List::MoreUtils 'first_index'; #apt package liblist-moreutils-perl
use strict;
use warnings;


my $views_sql;

while (<>) {
    $views_sql .= $_ if $views_sql or index($_, 'Final view structure') != -1;
    print $_ if !$views_sql;
}

my @views_regex_result = ($views_sql =~ /(\-\- Final view structure.+?\n\-\-\n\n.+?\n\n)/msg);
my @views = (join("", @views_regex_result) =~ /\-\- Final view structure for view `(.+?)`/g);
my $new_views_section = "";
while (@views) {
    foreach my $view (@views_regex_result) {
        my $view_body = ($view =~ /\/\*.+?VIEW .+ AS (select .+)\*\/;/g )[0];
        my $found = 0;
        foreach my $view (@views) {
            if ($view_body =~ /(from|join)[ \(]+`$view`/) {
                $found = $view;
                last;
            }
        }
        if (!$found) {
            print $view;
            my $name_of_view_which_was_not_found = ($view =~ /\-\- Final view structure for view `(.+?)`/g)[0];
            my $index = first_index { $_ eq $name_of_view_which_was_not_found } @views;
            if ($index != -1) {
                splice(@views, $index, 1);
                splice(@views_regex_result, $index, 1);
            }
        }
    }
}

用法: mysqldump -u username -v olddatabase -p | ./mysqldump_view_reorder.pl | mysql -u username -p -D newdatabase .pl

三个选项:

创建新数据库，关闭服务器，将文件从一个数据库文件夹移动到另一个数据库文件夹，然后重新启动服务器。注意，这只在所有表都是MyISAM的情况下才有效。 创建新的数据库，使用Create TABLE…LIKE语句，然后使用INSERT…从语句中选择*。 使用mysqldump并重新加载该文件。

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! -)

模拟MySQL中缺少的RENAME DATABASE命令:

创建一个新数据库 创建重命名查询: SELECT CONCAT('RENAME TABLE '，table_schema，'. " ' ' TO '，'new_schema. "，table_name，' ';') 从information_schema。表 WHERE table_schema LIKE 'old_schema'; 运行输出 删除旧数据库

这是从模拟MySQL中缺少的RENAME DATABASE命令。