Как использовать объединение для отображения свернутых значений

Question

Я использую синтаксис DB2 и надеюсь использовать UNION, чтобы создать дополнительную строку для отображения свернутых значений.

Вместо того, чтобы сделать это, первая часть объединения просто называет столбцы, тогда как появляются данные из второго объединения.

Вот первая часть

SELECT 'DRIVER ID' AS DRIVER_ID, 'NAME' AS NAME, 'PUNIT' AS PUNIT, 'PHONE' AS PHONE, 1767 AS TERMINAL_NUMBER, 'DRIVER TYPE' AS DRIVER_TYPE, 
COALESCE((SELECT ROUND(DEC(SUM(CASE WHEN UPDATED_BY IN ('VISTAR','TM4WIN') THEN 1.00 ELSE 0.00 END))/COUNT(UPDATED_BY),2) FROM ODRSTAT, TLORDER L, DRIVER D WHERE DETAIL_LINE_ID = ORDER_ID AND STATUS_CODE IN ('ARRV@SHIP', 'ARRV@CONS', 'DEPT@SHIP', 'DEPT@CONS') 
AND CURRENT_STATUS IN ('EDIBILLED','BILLD') AND L.PICK_UP_DRIVER = D.DRIVER_ID AND 
D.TERMINAL_NUMBER IN (SELECT UNIQUE FIRST_FIELD_INSERT FROM SITE WHERE FAX_PHONE_NUMBER = :DIVISION) AND BILL_DATE BETWEEN CURRENT DATE - 1 MONTH AND CURRENT DATE AND ACTUAL_DELIVERY > ACTUAL_PICKUP +30 SECONDS),0) AVG_STATUS_UPDATE, 
ROUND(((SELECT MAX(ODOMETER)-MIN(ODOMETER) FROM ODOHIST O 
WHERE READINGDATE >= CURRENT DATE - 30 DAYS AND O.UNIT_ID IN (SELECT UNIT_ID FROM PUNIT WHERE ACTIVE_WHERE = 'D' AND FLEET_ID IN (SELECT UNIQUE USER5 FROM SITE WHERE FAX_PHONE_NUMBER = :DIVISION))) 
/(SELECT NULLIF(SUM(T2.VOL_PFUEL),0) FROM FC_POS T2 INNER JOIN DRIVER D ON T2.DRIVER_ID = D.DRIVER_ID 
WHERE D.TERMINAL_NUMBER IN (SELECT UNIQUE FIRST_FIELD_INSERT FROM SITE WHERE FAX_PHONE_NUMBER = :DIVISION) AND POS_DATE >= CURRENT DATE - 30 DAYS)),2) AVG_MPG, 
(SELECT ROUND(AVG(TIMES),2) FROM (SELECT DELIVERY_DRIVER, ROUND(AVG(DEC((DAYS(CHECKIN_DATE) - DAYS(ACTUAL_DELIVERY)) *24 + (HOUR(CHECKIN_DATE) - HOUR(ACTUAL_DELIVERY)))/24),2) TIMES 
FROM LIST_CHECKIN_AUDIT, LYNX.TLORDER WHERE LYNX.TLORDER.BILL_NUMBER = LIST_CHECKIN_AUDIT.BILL_NUMBER AND BILL_DATE >= CURRENT TIMESTAMP - 1 MONTH 
AND LYNX.TLORDER.DOCUMENT_TYPE = 'INVOICE' AND ACTUAL_DELIVERY < CHECKIN_DATE AND ACTUAL_DELIVERY BETWEEN CURRENT TIMESTAMP - 6 MONTHS AND CURRENT TIMESTAMP + 3 DAYS 
GROUP BY LYNX.TLORDER.BILL_NUMBER, DELIVERY_DRIVER) AVERAGES WHERE AVERAGES.DELIVERY_DRIVER IN (SELECT DRIVER_ID FROM DRIVER WHERE ACTIVE_IN_DISP = 'True' AND TERMINAL_NUMBER IN (SELECT UNIQUE FIRST_FIELD_INSERT FROM SITE WHERE FAX_PHONE_NUMBER = :DIVISION))) AS AVG_DAYS_TO_SCAN, 
CAST(SUM(CASE WHEN VARCHAR(COALESCE((SELECT DATA FROM CUSTOM_DATA WHERE SRC_TABLE_KEY = DRIVER_ID AND CUSTDEF_ID = '50'),'False'),10) = 'True' THEN 1 ELSE 0 END) AS VARCHAR(10)) AS DRIVE_AXLE, 
(SELECT COUNT(UNIQUE A.BILL_NUMBER) FROM LIST_CHECKIN_AUDIT A INNER JOIN TLORDER T ON T.BILL_NUMBER = A.BILL_NUMBER 
WHERE CURRENT_STATUS IN ('EDIBILLED','BILLD') AND COALESCE(PICK_UP_DRIVER,DELIVERY_DRIVER) IN (SELECT DRIVER_ID FROM DRIVER WHERE ACTIVE_IN_DISP = 'True' 
AND TERMINAL_NUMBER IN (SELECT UNIQUE FIRST_FIELD_INSERT FROM SITE WHERE FAX_PHONE_NUMBER = :DIVISION)) AND BILL_DATE >= CURRENT DATE - 1 MONTH AND A.DOCUMENT_TYPE = 'DABL') AS DRIVERAXLE_SUBMISSIONS 
FROM DRIVER WHERE ACTIVE_IN_DISP = 'True' 
AND TERMINAL_NUMBER IN (SELECT UNIQUE FIRST_FIELD_INSERT FROM SITE WHERE FAX_PHONE_NUMBER = :DIVISION) 

UNION ALL 

SELECT DRIVER_ID, NAME, DEFAULT_PUNIT AS PUNIT, VARCHAR(USER9,12) AS PHONE, TERMINAL_NUMBER, DRIVER_TYPE, 
COALESCE((SELECT ROUND(DEC(SUM(CASE WHEN UPDATED_BY IN ('VISTAR','TM4WIN') THEN 1.00 ELSE 0.00 END))/COUNT(UPDATED_BY),2) FROM ODRSTAT, TLORDER L WHERE DETAIL_LINE_ID = ORDER_ID AND STATUS_CODE IN ('ARRV@SHIP', 'ARRV@CONS', 'DEPT@SHIP', 'DEPT@CONS') 
AND CURRENT_STATUS IN ('EDIBILLED','BILLD') AND L.PICK_UP_DRIVER = DRIVER_ID AND BILL_DATE BETWEEN CURRENT DATE - 1 MONTH AND CURRENT DATE AND ACTUAL_DELIVERY > ACTUAL_PICKUP +30 SECONDS),0) AS STATUS_UPDATE_PERCENT, 
ROUND(((SELECT MAX(ODOMETER)-MIN(ODOMETER) FROM ODOHIST O 
WHERE READINGDATE >= CURRENT DATE - 30 DAYS AND O.UNIT_ID = DEFAULT_PUNIT)/(SELECT NULLIF(SUM(T2.VOL_PFUEL),0) FROM FC_POS T2 WHERE T2.DRIVER_ID = DRIVER.DRIVER_ID AND POS_DATE >= CURRENT DATE - 30 DAYS)),2) AS MPG_30DAYS, 
(SELECT ROUND(AVG(TIMES),2) FROM (SELECT DELIVERY_DRIVER, ROUND(AVG(DEC((DAYS(CHECKIN_DATE) - DAYS(ACTUAL_DELIVERY)) *24 + (HOUR(CHECKIN_DATE) - HOUR(ACTUAL_DELIVERY)))/24),2) TIMES 
FROM LIST_CHECKIN_AUDIT, LYNX.TLORDER WHERE LYNX.TLORDER.BILL_NUMBER = LIST_CHECKIN_AUDIT.BILL_NUMBER AND BILL_DATE >= CURRENT TIMESTAMP - 1 MONTH 
AND LYNX.TLORDER.DOCUMENT_TYPE = 'INVOICE' AND ACTUAL_DELIVERY < CHECKIN_DATE AND ACTUAL_DELIVERY BETWEEN CURRENT TIMESTAMP - 6 MONTHS AND CURRENT TIMESTAMP + 3 DAYS 
GROUP BY LYNX.TLORDER.BILL_NUMBER, DELIVERY_DRIVER) AVERAGES WHERE AVERAGES.DELIVERY_DRIVER = DRIVER.DRIVER_ID) 
AVG_DAYS_TO_SCAN, 
VARCHAR(COALESCE((SELECT DATA FROM CUSTOM_DATA WHERE SRC_TABLE_KEY = DRIVER_ID AND CUSTDEF_ID = '50'),'False'),10) AS DRIVEAXLE, 
(SELECT COUNT(UNIQUE A.BILL_NUMBER) FROM LIST_CHECKIN_AUDIT A INNER JOIN TLORDER T ON T.BILL_NUMBER = A.BILL_NUMBER 
WHERE CURRENT_STATUS IN ('EDIBILLED','BILLD') AND COALESCE(PICK_UP_DRIVER,DELIVERY_DRIVER) = DRIVER_ID AND BILL_DATE >= CURRENT DATE - 1 MONTH AND A.DOCUMENT_TYPE = 'DABL') AS DRIVERAXLE_SUBMISSIONS_1_MONTH 
FROM DRIVER WHERE ACTIVE_IN_DISP = 'True' 
AND TERMINAL_NUMBER IN (SELECT UNIQUE FIRST_FIELD_INSERT FROM SITE WHERE FAX_PHONE_NUMBER = :DIVISION) 

Answer 1

Я не смотрел на свой код ... учитывая отсутствие форматирования, это не так легко следовать.

Однако, когда я использовал UNION в прошлом для предоставления свернутых значений, я включил дополнительные столбцы, которые позволяют мне различать детали и итоговые значения. Эти дополнительные столбцы также используется в качестве первого столбца ORDER BY

Пример:

select      
    digits(HCUSNR) as Cust_Num, 
    CCUSNM, 
    char(HINVNR), 
    hinamt, 
-- Control fields     
    ' ' concat digits(HCMPCL),  
    case        
    when HTRCDE in ('A', 'E', 'R') 
     then ' LVL3'    
    else ' LVL1'     
    end,        
    HCUSNR, DDVDSC, HDIVSN   
UNION ALL 

select  
    ' ', 
    'Daily Invoice Total', 
    ' ', 
    sum(hinamt), 
-- Control Fields          
    ' ' concat digits(HCMPCL), ' LVL2', 0, ' ', HDIVSN 
group by    
    HDIVSN, HCMPCL 
--Following order by applies to entire results set 
order by 5,6,7,8,9 

Но выше было написано около 20 лет назад ...

Если мне нужно сделать это сегодня, Я бы использовал функции группировки, свертывания и куба, которые IBM добавила в БД.

Какая платформа и версия DB2 вы используете? Являются ли группировка множеств, сверток и/или куб опцией?