Question

美好的一天！我是初学者，在做查询时我还在学习它，任何人都可以帮助我如何加入两个不同的选择查询，这是我的查询代码。

提前感谢您帮助我。

Select * from 
( select
	mm.MemberId CLIENT_REFERENCE,
	mm.LastNM LAST_NAME,	
	mm.FirstNm FIRST_NAME,	
	mm.MidNm MIDDLE_NAME,
	mm.Address NO_STREET_SITIO_PUROK,	
	vm.VillageName BARANGAY_DISTRICT,
	cm.City CITY_MUNICIPALITY,	
	pm.Province PROVINCE,
	'0000' ZIP_CODE,
	mm.MemDOB BIRTHDATE,
	mm.MemGen GENDER,
	mm.ContNo CONTACT_NO,	
	'' ID_TYPE,
	'' ID_NO,
	mm.SSS [SSS/GSIS],
	'' PAGIBIG,
	'' PHILHEALTH,
	mm.TIN TIN,
	lm.LoanNo LOAN_REFERENCE,
	'10' CONTRACT_TYPE,
	'AC' CONTRACT_PHASE,
	'NA' TRANSACTION_TYPE,
	lm.LoanAmt LOAN_PRINCIPAL,
	wom.PrinAmt LOAN_BALANCE,
	lm.LoanDt DATE_GRANTED,
	''DATE_DUE,
	lm.IntRate INTEREST_RATE,
	'Weekly' PAY_FREQ,
	lm.TotalInstNo TERM, 
	'PHP' CURRENCY,
	'ET' LOAN_PURPOSE,
	'04-01' BAR_TYPE,
	cd.IntCollAmt + cd.PrinCollAmt TOTAL_LOAN_BALANCE,
	'' CONTRACT_ACTUAL_END_DATE,
	'0' OVERDUE_DAYS,
	'' MONTHLY_PAYMENT_AMOUNT,
	'0'NO_OF_OUTSTANDING_PAYMENTS,
	cd.NoofInst - 1 AMOUNT_OF_LAST_PAYMENT,
	'Written Off Clients' Remarks
from MemberMst mm
	inner join VillageMst vm
on vm.VillageId = mm.Barangay
	inner join CityMst cm
on vm.CityId = cm.CityId
	inner join ProvinceMst pm
on cm.ProvinceId = pm.ProvinceId
---------------------------------
	inner join LoanMst lm
on lm.MemberId = mm.MemberId
	inner join CollectionDtl cd
on cd.LoanId = lm.LoanId
	inner join WriteOffMst wom
on wom.LoanId = lm.LoanId
	inner join BranchMst bm
on bm.BranchCode = wom.BranchCode
	inner join LoanSubPurposeMst lsm
on lsm.LSubPurposeId = lm.SubPurposeId
where wom.WriteoffDate between '2016-01-01' and '2016-12-31' and cd.AccDate = wom.WriteoffDate
) as q1
inner join
(
	SELECT *
FROM
(
    SELECT cd.NoofInst,cd.CollAmt, ROW_NUMBER() OVER (ORDER BY cd.NoofInst DESC) rn
    FROM MemberMst mm 
    INNER JOIN LoanMst lm
        ON lm.MemberId = mm.MemberId
    INNER JOIN CollectionDtl cd
       ON cd.LoanId = lm.LoanId
    INNER JOIN WriteOffMst wom
        ON wom.LoanId = cd.LoanId
    WHERE
        mm.MemberId = '0050000404' AND
        lm.WriteoffDate = wom.WriteOffDate
) t
where t.rn = 2
) as q2

任何建议！

我在这方面遇到了错误。

嗨，美好的一天！我是初学者，在做查询时我还在学习它，任何人都可以帮助我如何加入两个不同的选择查询，这是我的查询代码。

Answer 1

只是为了解决错误而不是实际结果。

Missing ON clause to join q2 and q1.

应该是

where t.rn = 2
) as q2 on q2.<field> = q1.<field>

Answer 2

我将提出建议，但可能会产生意外结果，请使用cross join：

SELECT
      *
FROM (
      SELECT
            mm.MemberId                    client_reference
          , mm.LastNM                      last_name
          , mm.FirstNm                     first_name
          , mm.MidNm                       middle_name
          , mm.Address                     no_street_sitio_purok
          , vm.VillageName                 barangay_district
          , cm.City                        city_municipality
          , pm.Province                    province
          , '0000'                         zip_code
          , mm.MemDOB                      birthdate
          , mm.MemGen                      gender
          , mm.ContNo                      contact_no
          , ''                             id_type
          , ''                             id_no
          , mm.SSS                         [sss/gsis]
          , ''                             pagibig
          , ''                             philhealth
          , mm.TIN                         tin
          , lm.LoanNo                      loan_reference
          , '10'                           contract_type
          , 'AC'                           contract_phase
          , 'NA'                           transaction_type
          , lm.LoanAmt                     loan_principal
          , wom.PrinAmt                    loan_balance
          , lm.LoanDt                      date_granted
          , ''                             date_due
          , lm.IntRate                     interest_rate
          , 'Weekly'                       pay_freq
          , lm.TotalInstNo                 term
          , 'PHP'                          currency
          , 'ET'                           loan_purpose
          , '04-01'                        bar_type
          , cd.IntCollAmt + cd.PrinCollAmt total_loan_balance
          , ''                             contract_actual_end_date
          , '0'                            overdue_days
          , ''                             monthly_payment_amount
          , '0'                            no_of_outstanding_payments
          , cd.NoofInst - 1                amount_of_last_payment
          , 'Written Off Clients'          remarks
      FROM MemberMst mm
      INNER JOIN VillageMst vm ON vm.VillageId = mm.Barangay
      INNER JOIN CityMst cm ON vm.CityId = cm.CityId
      INNER JOIN ProvinceMst pm ON cm.ProvinceId = pm.ProvinceId
      ---------------------------------
      INNER JOIN LoanMst lm ON lm.MemberId = mm.MemberId
      INNER JOIN CollectionDtl cd ON cd.LoanId = lm.LoanId
      INNER JOIN WriteOffMst wom ON wom.LoanId = lm.LoanId
      INNER JOIN BranchMst bm ON bm.BranchCode = wom.BranchCode
      INNER JOIN LoanSubPurposeMst lsm ON lsm.LSubPurposeId = lm.SubPurposeId
      WHERE wom.WriteoffDate BETWEEN '2016-01-01' AND '2016-12-31'
      AND cd.AccDate = wom.WriteoffDate
) AS q1
CROSS JOIN (
      SELECT
            *
      FROM (
            SELECT
                  cd.NoofInst
                , cd.CollAmt
                , ROW_NUMBER() OVER (ORDER BY cd.NoofInst DESC) rn
            FROM MemberMst mm
            INNER JOIN LoanMst lm ON lm.MemberId = mm.MemberId
            INNER JOIN CollectionDtl cd ON cd.LoanId = lm.LoanId
            INNER JOIN WriteOffMst wom ON wom.LoanId = cd.LoanId
            WHERE mm.MemberId = '0050000404'
            AND lm.WriteoffDate = wom.WriteOffDate
      ) t
      WHERE t.rn = 2
) AS q2

但是一旦看到结果，您就会注意到第二个查询的3列的所有行都具有相同的值。

这是第二个建议，基于我认为可能的意图。第二个查询现在返回引用MemberId的多行，因此我们现在可以使用该列进行连接：

SELECT
      *
FROM (
      SELECT
            mm.MemberId                    client_reference
          , mm.LastNM                      last_name
          , mm.FirstNm                     first_name
          , mm.MidNm                       middle_name
          , mm.Address                     no_street_sitio_purok
          , vm.VillageName                 barangay_district
          , cm.City                        city_municipality
          , pm.Province                    province
          , '0000'                         zip_code
          , mm.MemDOB                      birthdate
          , mm.MemGen                      gender
          , mm.ContNo                      contact_no
          , ''                             id_type
          , ''                             id_no
          , mm.SSS                         [sss/gsis]
          , ''                             pagibig
          , ''                             philhealth
          , mm.TIN                         tin
          , lm.LoanNo                      loan_reference
          , '10'                           contract_type
          , 'AC'                           contract_phase
          , 'NA'                           transaction_type
          , lm.LoanAmt                     loan_principal
          , wom.PrinAmt                    loan_balance
          , lm.LoanDt                      date_granted
          , ''                             date_due
          , lm.IntRate                     interest_rate
          , 'Weekly'                       pay_freq
          , lm.TotalInstNo                 term
          , 'PHP'                          currency
          , 'ET'                           loan_purpose
          , '04-01'                        bar_type
          , cd.IntCollAmt + cd.PrinCollAmt total_loan_balance
          , ''                             contract_actual_end_date
          , '0'                            overdue_days
          , ''                             monthly_payment_amount
          , '0'                            no_of_outstanding_payments
          , cd.NoofInst - 1                amount_of_last_payment
          , 'Written Off Clients'          remarks
      FROM MemberMst mm
      INNER JOIN VillageMst vm ON vm.VillageId = mm.Barangay
      INNER JOIN CityMst cm ON vm.CityId = cm.CityId
      INNER JOIN ProvinceMst pm ON cm.ProvinceId = pm.ProvinceId
      ---------------------------------
      INNER JOIN LoanMst lm ON lm.MemberId = mm.MemberId
      INNER JOIN CollectionDtl cd ON cd.LoanId = lm.LoanId
      INNER JOIN WriteOffMst wom ON wom.LoanId = lm.LoanId
      INNER JOIN BranchMst bm ON bm.BranchCode = wom.BranchCode
      INNER JOIN LoanSubPurposeMst lsm ON lsm.LSubPurposeId = lm.SubPurposeId
      WHERE wom.WriteoffDate BETWEEN '2016-01-01' AND '2016-12-31'
      AND cd.AccDate = wom.WriteoffDate
) AS q1
INNER JOIN (
      SELECT
            *
      FROM (
            SELECT
                  mm.MemberId
                , cd.NoofInst
                , cd.CollAmt
                , ROW_NUMBER() OVER (ORDER BY cd.NoofInst DESC) rn
            FROM MemberMst mm
            INNER JOIN LoanMst lm ON lm.MemberId = mm.MemberId
            INNER JOIN CollectionDtl cd ON cd.LoanId = lm.LoanId
            INNER JOIN WriteOffMst wom ON wom.LoanId = cd.LoanId
            WHERE wom.WriteoffDate BETWEEN '2016-01-01' AND '2016-12-31'
            ) t
      WHERE t.rn = 2
      ) AS q2 ON q1.MemberId = q2.MemberId

如何使用内连接

2 个答案: