How do I run a query on a database whose name contains a space?

In MySQL I created a database with name like de mo, and it cont开发者_高级运维ains a table like tablename. When I try to execute a query, for example:

select * from de mo.tablename

I am not able to execute that query. How can I do that?

You'll have to quote the database name:

SELECT * FROM `de mo`.tablename

Spaces in identifiers are best avoided really.

use backticks:

`de mo`

It is necessary to quote the name. Usually backticks are used:

select * from `de mo`.tablename