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POAmbiguous `id` Field
 

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    <p>I have the following two tables:</p> <pre><code>system - id - systemName - idOrganization organization - id - officeSymbol </code></pre> <p>I am running the following query and receiving an <code>id</code> is ambiguous error:</p> <pre><code>SELECT system.systemName, organization.officeSymbol FROM system LEFT JOIN (organization) ON (system.idOrganization = organization.id) </code></pre> <p>As you can see, I'm not selecting the <code>id</code> column. If I place <code>system.id</code> within the list of fields to select, I no longer receive this error. Unfortunately, the manner in which this data is handled I can't return the <code>id</code> - we don't want it displayed to the user.</p> <p>Also, if I add <code>GROUP BY system.systemName</code> I no longer get the error - but this just doesn't seem like the optimal solution.</p> <p>Note: The <code>LEFT JOIN</code> is intentional as not all systems will be assigned to an Organization.</p> <pre><code>SELECT VERSION() --&gt; 5.0.77-community-log CREATE TABLE system ( `id` INT(11) NOT NULL AUTO_INCREMENT, `systemName` VARCHAR(45) DEFAULT NULL, `idOrganization` INT(11) DEFAULT NULL, PRIMARY KEY (`id`), KEY `fk_system_organization` (`idOrganization`), CONSTRAINT `fk_system_organization` FOREIGN KEY (`idOrganization`) REFERENCES `organization` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION ) ENGINE=InnoDB DEFAULT CHARSET=latin1; CREATE TABLE organization ( `id` INT(11) NOT NULL AUTO_INCREMENT, `officeSymbol` VARCHAR(45) DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1; </code></pre>
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