centos 修改mysql5.7表名区分大小写

在CentOS上，要修改MySQL 5.7的表名区分大小写的设置，可以按照以下步骤进行操作：

1. 打开终端或SSH连接到CentOS服务器。
2. 使用root用户或具有sudo权限的用户登录。
3. 编辑MySQL的配置文件my.cnf。在CentOS 7和CentOS 8上，my.cnf文件通常位于`/etc/my.cnf`或`/etc/mysql/my.cnf`。

   sudo vi /etc/my.cnf

或者

   sudo nano /etc/my.cnf

4. 在配置文件中，找到[mysqld]部分，并在其下方添加以下行：

   lower_case_table_names=2

设置lower_case_table_names参数为2表示表名区分大小写。

如果要将表名视为不区分大小写，请将lower_case_table_names参数设置为1。

5. 保存并关闭文件。

在vi编辑器中，按下Esc键，然后输入`:wq`保存并退出。

在nano编辑器中，按下Ctrl+X，然后按下Y确认保存，并按下Enter键退出。

6. 重启MySQL服务以使更改生效。

   sudo systemctl restart mysqld

请注意，修改MySQL的表名区分大小写设置可能会影响现有数据库和表的查询和操作。在进行此更改之前，请确保了解潜在的影响并进行适当的备份。

相关问题

帮我写一个mysql5.7版本的centos7上的安装sehll脚本，要求大小写不敏感，sehll的开头可以自己指定安装的目录和具体版本

好的，我可以为您编写安装mysql5.7版本的centos7的sehll脚本。以下是我为您准备的脚本：

# MySQL installation script for CentOS 7

# Set the installation directory and version number
INSTALL_DIR=/usr/local/mysql
VERSION=5.7.31

# Download the MySQL repository configuration package
yum -y install wget
wget https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm

# Install the MySQL repository configuration package
yum -y localinstall mysql57-community-release-el7-11.noarch.rpm

# Install the MySQL server and client packages
yum -y install mysql-community-server
yum -y install mysql-community-client

# Start the MySQL server and enable it to start automatically on boot
systemctl start mysqld
systemctl enable mysqld

# Set the MySQL root user password
temp_password=$(grep 'temporary password' /var/log/mysqld.log | awk '{print $NF}')
mysql --connect-expired-password -uroot -p"$temp_password" -e "ALTER USER 'root'@'localhost' IDENTIFIED BY 'YourNewPasswordHere';FLUSH PRIVILEGES;"

# Set the MySQL configuration file to be case insensitive
echo "lower_case_table_names = 1" >> /etc/my.cnf

# Restart the MySQL server to apply the configuration changes
systemctl restart mysqld

请注意，这个脚本将下载并安装mysql5.7版本，然后启动mysql服务并且设置mysql root用户的密码。此外，该脚本将配置mysql以使其大小写不敏感。请提前设置好您的新密码并将“YourNewPasswordHere”替换成您的新密码。如有需要，您可以根据实际情况更改安装目录和版本号。

帮我写一个mysql5.7版本的centos7上的安装sehll脚本，要求大小写不敏感，在sehll脚本的开头可以自己通过手动输入的方式指定安装的目录和具体版本，代码中的注释要用英文

Sure, I can help you with that. Here's a shell script for installing MySQL 5.7 on CentOS 7:

#!/bin/bash

# Prompt the user for installation directory and MySQL version
echo "Please enter the installation directory: "
read install_directory
echo "Please enter the version of MySQL you wish to install: "
read mysql_version

# Convert version input to lowercase
mysql_version=$(echo "$mysql_version" | tr '[:upper:]' '[:lower:]')

# Install MySQL 5.7 using the appropriate package based on the version selected
if [ "$mysql_version" == "5.7" ]; then
  echo "Installing MySQL 5.7..."
  sudo yum install -y https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm
  sudo yum install -y mysql-community-server
elif [ "$mysql_version" == "8.0" ]; then
  echo "Installing MySQL 8.0..."
  sudo yum install -y https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm
  sudo yum install -y mysql-community-server
else
  echo "Invalid MySQL version entered. Please try again."
  exit 1
fi

# Start the MySQL service
sudo systemctl start mysqld

# Print the initial MySQL root password to the console
echo "The initial root password for MySQL is:"
sudo grep 'temporary password' /var/log/mysqld.log | awk '{print $NF}'

# Set MySQL to start automatically on boot
sudo systemctl enable mysqld

# Add the installation directory to the system path
echo "export PATH=\$PATH:$install_directory/mysql/bin" >> ~/.bashrc
source ~/.bashrc

# Print a success message
echo "MySQL $mysql_version has been installed at $install_directory/mysql."

Note that this script will prompt the user to enter the installation directory and MySQL version, and will install MySQL 5.7 or 8.0 depending on the selected version. It will also start the MySQL service, print the initial root password to the console, set MySQL to start automatically on boot, and add the installation directory to the system path.

All comments in the script are in English. Please let me know if you have any questions or concerns.