Fatal error: Uncaught exception 'CDbException' with message 'Column name must be either a string or an array.' in /data/web/libs/yii/db/schema/CDbCommandBuilder.php:701 Stack trace: #0 /data/web/libs/yii/db/schema/CDbCommandBuilder.php(496): CDbCommandBuilder->createInCondition(Object(CMysqlTableSchema), NULL, Array, '`t`.') #1 /data/web/libs/yii/db/ar/CActiveRecord.php(1395): CDbCommandBuilder->createPkCriteria(Object(CMysqlTableSchema), '186', '', Array, '`t`.') #2 /data/web/qudao_v3/protected/models/WdQuestion.php(31): CActiveRecord->findByPk('186') #3 /data/web/qudao_v3/protected/modules/wap/controllers/MisteController.php(1678): WdQuestion->getWdAnswerlist(1, 0, ' qid = 504399 a...') #4 /data/web/libs/yii/web/actions/CInlineAction.php(50): MisteController->actionAskDetail() #5 /data/web/libs/yii/web/CController.php(285): CInlineAction->runWithParams(Array) #6 /data/web/libs/yii/web/CController.php(266): CController->runAction(Object(CInlineAction)) #7 /data/web/libs/yii/web/CController.php(246): CController->runActio in /data/web/libs/yii/db/schema/CDbCommandBuilder.php on line 701