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While, my query works on almost all entries, it does not work with one particular key.

"INSERT INTO highscores (uuid, name, score) VALUES (?, ?, ?) ON DUPLICATE KEY UPDATE score = VALUES(score)"

If I remove the ON DUPLICATE KEY part, both keys throw error that they already exist.

"SELECT * FROM highscores"
a0c0abfe-e859-33d2-8075-a5532417a09d Tomas 408
a0c0abfe-e859-33d2-ffdf-591e2e27509d John 48

Before and after query:

Saving score: a0c0abfe-e859-33d2-8075-a5532417a09d, Tomas, 423
Saved score:  a0c0abfe-e859-33d2-8075-a5532417a09d, Tomas, 408

Saving score: a0c0abfe-e859-33d2-ffdf-591e2e27509d, John, 75
Saved score:  a0c0abfe-e859-33d2-ffdf-591e2e27509d, John, 75

Table layout:

                         NAME VARCHAR(64),
                         SCORE INT,
                         PRIMARY KEY (UUID));

Do you have an idea what could cause this ?


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migrated from serverfault.com Aug 7 '13 at 20:09

This question came from our site for professional system and network administrators.

So you are saying the query succeeds but the row doesn't actually change? Is the table MyISAM or InnoDB? –  Michael - sqlbot Aug 8 '13 at 0:01

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