Why does MySQL not find the data in the code, the same statement client can do?

Today, the data into the MySQL database, and then the site to bring up, found that the data can not get, nor error. It seems that the data is empty? No, you should. Carefully debug to SQL statement, find correct, paste SQL statement to client, execute correctly. Strange ~

Then the problem arose. For Mao?

Oh, it's easy to have Chinese in the Where condition of the SQL statement.

Not for the Chinese, because the code is different, the MySQL is broken, and then modified My.ini to set the encoding to a generic UTF8. Problem solving.

Why does MySQL not find the data in the code, the same statement client can do?