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I changed the root password using Google APIs SQL Prompt from blank to using:

UPDATE mysql.user SET password = PASSWORD('<password>') WHERE user = 'root';

It has been documented here that SQL prompt and some other APIs Services will lose functionality when a password is set on root. (Thanks for Hasturkun's comment below).

How then do we reset the password to <blank>?

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migrated from Jul 9 '13 at 6:41

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@DanFromGermany, No, The Execute Button at the Prompt itself is disabled. – Tabrez Ahmed Jul 7 '13 at 9:12
Off topic probably belongs on Database Administrators, also The lovely documentation has this to say: Note that if you add a password to the root MySQL user, the APIs Console Interface will lose some functionality, including import and export capabilities, and the SQL prompt. – Hasturkun Jul 7 '13 at 9:20
@Hasturkun, How to revoke the password then? – Tabrez Ahmed Jul 7 '13 at 9:23
I haven't the faintest, though you might be able to do so with the command line client – Hasturkun Jul 7 '13 at 9:25
the password is stored hashed, that is why it is a dumb idea to change it using a sql statement... – SQL.injection Jul 7 '13 at 9:42
up vote 2 down vote accepted

Login to MySQL using current password and then you can change password like this

mysql> SET PASSWORD FOR root@'localhost'=PASSWORD('');
Query OK, 0 rows affected (0.00 sec)

Now you can login MySQL using BLANK password.

This is not the most secure way to change password for better approach please have a look at How to Reset the Root Password.

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Surprisingly, you could also say SET PASSWORD FOR root@'localhost'=''; because PASSWORD('') is ''. +1 !!! – RolandoMySQLDBA Jul 9 '13 at 15:33

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