重命名mysql数据库的五个方法
五个改mysql数据库名的方法: 1. RENAME DATABASE db_name TO new_db_name 这个。。这个语法在mysql 5.1.7中被添加进来,到了5.1.23又去掉了。据说有可能丢失数据。还是不要用的好。详见: 2.如果所有表都是MyISAM类型的话,可以改文件夹的名字 关闭mysqld
五个改mysql数据库名的方法:
1. RENAME DATABASE db_name TO new_db_name
这个。。这个语法在mysql 5.1.7中被添加进来,到了5.1.23又去掉了。据说有可能丢失数据。还是不要用的好。详见:
2.如果所有表都是MyISAM类型的话,可以改文件夹的名字
关闭mysqld
把data目录中的db_name目录重命名为new_db_name
开启mysqld
3.重命名所有的表
CREATE DATABASE new_db_name;
RENAME TABLE db_name.table1 TO new_db_name.table1,
db_name.table2 TO new_db_name.table2;
DROP DATABASE db_name;
4. mysqldump导出数据再导入
mysqldump -uxxxx -pxxxx -h xxxx db_name > db_name_dump.SQL
mysql -uxxxx -pxxxx -h xxxx -e “CREATE DATABASE new_db_name”
mysql -uxxxx -pxxxx -h xxxx new_db_name
mysql -uxxxx -pxxxx -h xxxx -e “DROP DATABASE db_name”
5.使用Shell脚本重命名所有的表
#!/bin/bash
mysqlconn=”mysql -u xxxx -pxxxx -S /var/lib/mysql/mysql.sock -h localhost”
olddb=”db_name”
newdb=”new_db_name”
#$mysqlconn -e “CREATE DATABASE $newdb”
params=$($mysqlconn -N -e “SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE table_schema=’$olddb’”)
for name in $params; do
$mysqlconn -e “RENAME TABLE $olddb.$name to $newdb.$name”;
done;
#$mysqlconn -e “DROP DATABASE $olddb”
就是方法3的优化版。
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