ORACLE中的SQL Where子句

如何在第二個子選擇中的第一個子選擇中使用END_DATE/START_DATE ?,所提供的值僅爲示例。（06/01/2010）。ORACLE中的SQL Where子句

SELECT "PROJECT"."ID", 
     "PROJECT"."CLIENT", 
     "PROJECT"."NAME", 
     "PROJECT"."STATE", 
     "PROJECT"."EARLIEST_START", 
     "PROJECT"."LATEST_END", 
     "PROJECT"."EFFORT", 
     "PROJECT"."LINK", 
     "PROJECT"."STATUS", 
     "PROJECT"."DESCRIPTION", 
     (SELECT SUM((END_DATE - START_DATE + 1) * (WORKLOAD/100)) 
      FROM WORKITEM WHERE PROJECT = PROJECT.ID 
     ) AS "P_A", 
     (SELECT COUNT(*) 
      FROM PUBLIC_HOLIDAY 
      WHERE HOLIDAY_DATE BETWEEN TO_DATE('06/1/2010','MM/DD/YYYY') AND 
            TO_DATE('06/2/2010','MM/DD/YYYY')) AS P_B, 
     "PROJECT_STATE"."STATE", 
     "PERSON"."DISPLAY_NAME" AS "RESPONSIBLE" 
     FROM "PROJECT" 
     INNER JOIN "PROJECT_STATE" ON PROJECT.STATE = PROJECT_STATE.ID 
     INNER JOIN "PERSON" ON RESPONSIBLE = PERSON.ID 
     WHERE (PROJECT.CLIENT = '1') AND (PROJECT.STATE = 1) 
     ORDER BY "PROJECT"."NAME" ASC

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2010-06-10 opHASnoNAME

我不知道你問一個辦法 - 請澄清問題。 – 2010-06-10 07:14:22

對不起，很難解釋，希望這有助於.. – opHASnoNAME 2010-06-10 07:17:28

對不起，難以回答:-)。嚴重的是，再次嘗試制定以問號結尾的句子。請包含一個創建表並插入一些示例數據和預期輸出。 – 2010-06-10 07:36:18

你不能。您可以使用連接從這兩個子查詢中選擇一個子查詢，然後將新的複合子查詢從SELECT部分移至主查詢的FROM部分。

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2010-06-10 08:15:30 kicsit

這就是你正在尋找

SELECT "PROJECT"."ID", 
     "PROJECT"."CLIENT", 
     "PROJECT"."NAME", 
     "PROJECT"."STATE", 
     "PROJECT"."EARLIEST_START", 
     "PROJECT"."LATEST_END", 
     "PROJECT"."EFFORT", 
     "PROJECT"."LINK", 
     "PROJECT"."STATUS", 
     "PROJECT"."DESCRIPTION", 
     (SELECT SUM((END_DATE - START_DATE + 1) * (WORKLOAD/100)) 
      FROM WORKITEM WHERE PROJECT = PROJECT.ID 
     ) AS "P_A", 
     (SELECT COUNT(*) 
      FROM PUBLIC_HOLIDAY 
      WHERE HOLIDAY_DATE BETWEEN NVL(END_DATE,SYSDATE) AND 
            NVL(START_DATE,SYSDATE)) AS P_B, 
     "PROJECT_STATE"."STATE", 
     "PERSON"."DISPLAY_NAME" AS "RESPONSIBLE" 
     FROM "PROJECT" 
     INNER JOIN "PROJECT_STATE" ON PROJECT.STATE = PROJECT_STATE.ID 
     INNER JOIN "PERSON" ON RESPONSIBLE = PERSON.ID 
     LEFT JOIN "WORKITEM" ON WORKITEM.PROJECT = WORKITEM.ID 
     WHERE (PROJECT.CLIENT = '1') AND (PROJECT.STATE = 1) 
     ORDER BY "PROJECT"."NAME" ASC

來源

2010-06-10 08:30:08 Bharat

下面是使用起始日期日期和結束日期在多個地方

with (select to_date('06/01/2010','MM/DD/YYYY') as start_date, 
      to_date('06/02/2010','MM/DD/YYYY') as end_date 
     from dual) as q1 
select project.id, 
     project_state.state, 
     q1.start_date, 
     q1.end_date, 
     (SELECT SUM((q1.END_DATE - q1.START_DATE + 1) * (WORKLOAD/100)) 
     FROM WORKITEM WHERE PROJECT = PROJECT.ID) AS P_A 
from project 
join project_state on project_state.id = project.state 
join q1 on 1=1

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2010-06-10 08:34:57 coop

ORACLE中的SQL Where子句

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