TYPO3 Core

$tableArray = $this->SQLparser->parseFromTables($_tableList);

// If success, traverse the tables:

foreach($tableArray as $vArray) {

// Find handler key, select "_DEFAULT" if none is specifically configured:

$handlerKey = $this->table2handlerKeys[$vArray['table']] ? $this->table2handlerKeys[$vArray['table']] : '_DEFAULT';

$handlerKey = $this->table2handlerKeys[$vArray['table']] ? $this->table2handlerKeys[$vArray['table']] : '_DEFAULT';

// In case of separate handler keys for joined tables:

die('DBAL fatal error: Tables in this list "'.$tableList.'" didn\'t use the same DB handler!');

}