Question

I swear I’ve done this before and it’s worked fine, but it seems that with the query I have (below) I can’t map two columns of the same name (in this case ’email’) even when using “as” in my query. I’ve also tried without the “as” – just having ‘u.email assessorEmail’ and that query works as well, but with the same problem, the field just doesn’t appear in my results when I debug.

getQueryRunner().query("SELECT u.email AS assessorEmail, f.formid, f.firstName, f.surname, f.email, f.valid, f.invalidreason FROM users AS u RIGHT JOIN userforms AS uf ON u.id=uf.user LEFT JOIN forms AS f ON uf.form=f.formid WHERE u.role=? AND f.submitted=1 AND f.valid=0 ORDER BY u.email", new MapListHandler(), Role.ASSESSOR);

MySql result:

assessorEmail           formid  firstName   surname email           valid   invalidreason
[e-mail]       547     John        Doe     [e-mail]   0   

Eclipse->inspect variable:

[{valid=false, invalidreason=, email=[e-mail], surname=Doe, firstName=John, formid=547}]

If I remove f.email from the query, the u.email appears successfully as ’email’ (still not assessorEmail).

Is this a DbUtils thing? A QueryRunner thing? Even a MySql Java connector thing? I’m sure I’m missing something really obvious here…

Answer 1

After a little more digging I found a bug listing for this issue http://bugs.mysql.com/bug.php?id=32504. Seems to be an issue with the connector.

Adding “useOldAliasMetadataBehavior=true” as a parameter to the JDBC URL did the trick.