我正在使用propel 1.6.7中的retreiving數據掙扎。從多個連接的查詢中獲取聚合列到單個表格
這是我想達到的查詢的示例:
select count(1) as amount, p1.local_id FROM panel_data pd
JOIN panel_data_has_code pp1 on (pd.panel_data_id = pp1.panel_data_id)
JOIN panel_code p1 on (pp1.panel_code_id = p1.panel_code_id AND p1.type='equipment' AND model_id = 'my_model_id')
JOIN panel_data_has_code pp2 on (pd.panel_data_id = pp2.panel_data_id)
JOIN panel_code p2 on (pp2.panel_code_id = p2.panel_code_id AND p2.type='model' AND p2.local_id='my_local_id')
GROUP BY p1.local_id
但是每當我試圖構建的Propel ORM適當的標準,我有一個問題 - 顯然推動總是意味着加入別名表名,每當我嘗試使用add join條件或在select方法中使用別名時。我已經用簡單的filterBy
方法替換了多個連接條件(我總是使用內部連接,所以效果將是相同的),但是我仍然遇到與retreiving分組列(p1.local_id)有關的問題。
這是我與ATM的工作代碼:
PanelDataQuery::create()
->select(array('p1.localId'))
->withColumn('count(1)', 'amount')
->usePanelDataHasCodeQuery('pp1')->usePanelCodeQuery('p1')->groupByLocalId()->filterByType($type)->endUse()->endUse()
->usePanelDataHasCodeQuery('pp2')->usePanelCodeQuery('p2')->filterByType('model')->filterByLocalId($model)->endUse()->endUse()
->find();
上面的語句返回一個錯誤:
Unable to execute SELECT statement [SELECT count(1) AS amount, panel_code.LOCAL_ID AS \"p1.localId\" FROM panel_data INNER JOIN panel_data_has_code pp1 ON (panel_data.PANEL_DATA_ID=pp1.PANEL_DATA_ID) INNER JOIN panel_code p1 ON (pp1.PANEL_CODE_ID=p1.PANEL_CODE_ID) INNER JOIN panel_data_has_code pp2 ON (panel_data.PANEL_DATA_ID=pp2.PANEL_DATA_ID) INNER JOIN panel_code p2 ON (pp2.PANEL_CODE_ID=p2.PANEL_CODE_ID) WHERE p1.TYPE=:p1 AND p2.TYPE=:p2 AND p2.LOCAL_ID=:p3 GROUP BY p1.LOCAL_ID] [wrapped: SQLSTATE[42000]: [Microsoft][SQL Server Native Client 11.0][SQL Server]The multi-part identifier \"panel_code.LOCAL_ID\" could not be bound.]
顯然,SELECT子句會導致問題。任何想法如何強制推動使用表別名,而不是將其翻譯爲表名?
非常感謝您的幫助。