mysql - 通过 bash 在数据库名称中使用破折号创建数据库

Question

我尝试通过名称中带有破折号的 bash 创建一个新数据库。

这就是我尝试过的:

echo "CREATE DATABASE IF NOT EXISTS db-name CHARACTER SET utf8 COLLATE utf8_general_ci" | mysql -uuser -ppw

失败并出现以下错误:

ERROR 1064 (42000) at line 1: You have an error in your SQL syntax;
check the manual that corresponds to your MySQL server version for the 
right syntax to use near
'-name CHARACTER SET utf8 COLLATE utf8_general_ci' at line 1

然后我添加了反引号:

echo "CREATE DATABASE IF NOT EXISTS `db-name` CHARACTER SET utf8 COLLATE utf8_general_ci" | mysql -uuser -ppw

ERROR 1064 (42000) at line 1: You have an error in your SQL syntax;
check the manual that corresponds to your MySQL server version for the 
right syntax to use near
'CHARACTER SET utf8 COLLATE utf8_general_ci' at line 1

我玩了一下，发现即使名称中没有破折号，mysql 也不喜欢反引号:

echo "CREATE DATABASE IF NOT EXISTS `dbname` CHARACTER SET utf8 COLLATE utf8_general_ci" | mysql -uuser -ppw

ERROR 1064 (42000) at line 1: You have an error in your SQL syntax;
check the manual that corresponds to your MySQL server version for the 
right syntax to use near
'CHARACTER SET utf8 COLLATE utf8_general_ci' at line 1

我有点困惑。这里有什么问题？

PS:在 phpmyadmin 中添加反引号时会按预期工作

Answer 1

您要么引用反引号，要么简单地在命令周围使用单引号而不是双引号:

mysql -uuser -ppw -e 'CREATE DATABASE IF NOT EXISTS `db-name` CHARACTER SET utf8 COLLATE utf8_general_ci'

否则，shell 会将反引号扩展为命令替换。检查这个:http://tldp.org/LDP/abs/html/commandsub.html

进一步注意，您不需要 echo 命令。你可以使用mysql的-e命令行选项