如何獲得兩行的總和

Question

我在表中有兩行。我想在第三行中添加總價值。

我的表是

SELECT 
CONTROLLED_PERCENTAGE, EL_CLIENT_ID, ID, 
    PERC_ADJ_UNITS_RECEIVED, PHY_DIG_OR_TOTAL, RECORDING_ID, 
    SUM_UNITS_RECEIVED, UNIT_TYPE 
FROM EL_CLIENT_REC_UNITS; 

我將有EL_CLIENT_ID，，PHY_DIG_OR_TOTAL將是 'PHY' 或 'DIG'，我希望得到總。我想合計兩條記錄的SUM_UNITS_RECEIVED和PERC_UNITS_RECEIVED，其中UNIT_TYPES,EL_CLIENT_ID和RECORDING_ID是相同的。然後我想將其作爲新行插入，具有相同的,RECORDING_ID，但是這次將PHY_DIG_OR_TOTAL設置爲'TOTAL';

Answer 1

嘗試這樣：

SELECT 
    ID, 
    EL_CLIENT_ID, 
    RECORDING_ID, 
    UNIT_TYPE, 
    PHY_DIG_OR_TOTAL, 
    CONTROLLED_PERCENTAGE, 
    SUM_UNITS_RECEIVED, 
    PERC_ADJ_UNITS_RECEIVED 
FROM EL_CLIENT_REC_UNITS 

UNION ALL -- concatenate sets 

SELECT 
    NULL       AS ID, -- No ID for this row 
    EL_CLIENT_ID     AS EL_CLIENT_ID, 
    RECORDING_ID     AS RECORDING_ID, 
    UNIT_TYPE     AS UNIT_TYPE, 
    'TOTAL'      AS PHY_DIG_OR_TOTAL, 
    AVG(CONTROLLED_PERCENTAGE) AS CONTROLLED_PERCENTAGE, -- I don't know what to do with that 
    SUM(PERC_ADJ_UNITS_RECEIVED) AS PERC_ADJ_UNITS_RECEIVED, 
    SUM(SUM_UNITS_RECEIVED)  AS SUM_UNITS_RECEIVED 
FROM EL_CLIENT_REC_UNITS 
GROUP BY UNIT_TYPE, EL_CLIENT_ID, RECORDING_ID; 

嘗試谷歌GROUP BY SQL語句來了解更多關於本聲明。