需要一些SQL存儲過程的幫助 - 加盟

Question

所以，我有我的PROC的這一部分：

SELECT 
     com_contact.rc_name_full as CreatedBy, 
     capComponent.cm_strike as CapStrike, 
     floorComponent.cm_strike as FloorStrike, 
     tq_nominal_notional as Notional, 
     maxComponent.cm_effective_dt as EffectiveDate, 
     maxComponent.cm_maturity_dt as MaturityDate, 
     CAST(CAST(DATEDIFF(mm,maxComponent.cm_effective_dt,maxComponent.cm_maturity_dt) as decimal(9,2))/12 as decimal(9,2)) as term, 
     (
      CASE WHEN se_amort_term_mnth IS NOT NULL THEN se_amort_term_mnth/12 
      ELSE CAST(CAST(DATEDIFF(mm, 
       ISNULL(cmam_amortization_start_dt, maxComponent.cm_effective_dt), 
       cmam_amortization_end_dt) as decimal(9,2))/12 as decimal(9,2)) 
      END 
     ) AS AmortTermYears, 
     tq_dd_product as Product, 
     dh_key_rate as KeyRate, 
     dh_pv01 as PV01, 
     dh_val_time_stamp as RateTimeStamp, 
     re_bnk_le.re_company_name as Company, 
     rc_contact_id as UserId, 
     stp_name as NickName, 
     '' as project, 
     '' as Borrower, 
     '' as Lender, 
     '' as AdditionalInfo, 
     CASE WHEN tpm_pd_permission_id = 85 THEN 'LLH' WHEN tpm_pd_permission_id = 86 THEN 'ALM' ELSE '' END as Permission, 
     tr_transaction_id as TransactionId, 
     NULL as IndicationId 

    FROM cfo_transaction 

，說'' as project行，我們必須真正改變現在返回的數據。

FROM旁邊的表格，名爲cfo_transaction上有一個名爲tr_transaction_id的ID。我們有一個叫做com_project_transaction_link另一個表，鏈接這些ID與項目的ID，用兩個兩列名爲：

pt_tr_transaction_id和pt_pj_project_id，然後我們有一個包含具有pj_project_id和pj_project_name稱爲com_project所有項目的表格。

目標：從該項目表中返回pj_project_name，在該項目表中鏈接正在被拉的事務。

我真的不知道該怎麼做。

謝謝！

Answer 1

試試這個：

SELECT 
     com_contact.rc_name_full as CreatedBy, 
     capComponent.cm_strike as CapStrike, 
     floorComponent.cm_strike as FloorStrike, 
     tq_nominal_notional as Notional, 
     maxComponent.cm_effective_dt as EffectiveDate, 
     maxComponent.cm_maturity_dt as MaturityDate, 
     CAST(CAST(DATEDIFF(mm,maxComponent.cm_effective_dt,maxComponent.cm_maturity_dt) as decimal(9,2))/12 as decimal(9,2)) as term, 
     (
      CASE WHEN se_amort_term_mnth IS NOT NULL THEN se_amort_term_mnth/12 
      ELSE CAST(CAST(DATEDIFF(mm, 
       ISNULL(cmam_amortization_start_dt, maxComponent.cm_effective_dt), 
       cmam_amortization_end_dt) as decimal(9,2))/12 as decimal(9,2)) 
      END 
     ) AS AmortTermYears, 
     tq_dd_product as Product, 
     dh_key_rate as KeyRate, 
     dh_pv01 as PV01, 
     dh_val_time_stamp as RateTimeStamp, 
     re_bnk_le.re_company_name as Company, 
     rc_contact_id as UserId, 
     stp_name as NickName, 
     PR.pj_project_name as project, 
     '' as Borrower, 
     '' as Lender, 
     '' as AdditionalInfo, 
     CASE WHEN tpm_pd_permission_id = 85 THEN 'LLH' WHEN tpm_pd_permission_id = 86 THEN 'ALM' ELSE '' END as Permission, 
     tr_transaction_id as TransactionId, 
     NULL as IndicationId 

    FROM cfo_transaction TR 
    INNER JOIN com_project_transaction_link TL 
    ON TR.tr_transaction_id = TL.pt_tr_transaction_id 
    INNER JOIN com_project PR 
    ON TL.pt_pj_project_id = PR.pj_project_id 

上面的查詢假設每一筆交易和項目是上加入你的項目和交易表（因此INNER JOIN）表，但喲能如果您想要將這些更改爲LEFT JOIN

Answer 2

您只需向查詢添加第二個連接到另一個表。

select 
    yourfields, 
    p.pj_project_name as project 
FROM cfo_transaction t 
join com_project_transaction_link tl 
    on t.tr_transaction_id = tl.pt_tr_transaction_id 
join com_project p 
    on tl.pt_pj_project_id = p.pj_project_id 

Answer 3

SELECT ..., cp.pj_project_name 
    FROM cfo_transaction ct 
     INNER JOIN com_project_transaction_link cptl 
      ON ct.tr_transaction_id = cptl.pt_tr_transaction_id 
     INNER JOIN com_project cp 
      ON cptl.pt_pj_project_id = cp.pj_project_id