Question

我尝试通过bash创建一个新的数据库，其名称中包含短划线。

这就是我的尝试：

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，发现即使名字中没有破折号，mysql也不喜欢反叛：

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。这有什么不对吗？

PS：在phpmyadmin中，它在添加反引号时按预期工作

Answer 1

要么引用反引号，要么只使用单引号而不是命令的双引号：

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。检查一下：http://tldp.org/LDP/abs/html/commandsub.html

进一步注意，您不需要echo命令。您可以使用mysql的-e命令行选项

Answer 2

在反推之前使用后挡板：

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

通过数据库名称中的破折号使用bash创建数据库

2 个答案: