加入兩個表從第一日期在從第二

日期範圍我有兩個表像下面（日期格式：YYYY-MM-DD）：
1）表1 - EMPLOYEE_OVERTIMES（別名：EO）
加入兩個表從第一日期在從第二

EMPLOYEE_ID | OVERTIME_DATE 
------------------------------------------------ 
1   | 2012-04-01 
2   | 2012-08-14 
3   | 2012-07-22 
4   | 2012-10-30 
5   | 2012-06-07

2）表2 - EMPLOYEE_HOLIDAYS（別名：EH）

EMPLOYEE_ID | START_DATE | END_DATE | 
----------------------------------------- 
1   | 2012-03-28 | 2012-04-10 
2   | 2012-01-14 | 2012-01-30 
3   | 2012-07-15 | 2012-07-25 
4   | 2012-10-10 | 2012-10-13 
5   | 2012-06-01 | 2012-06-07

EMPLOYEE_OVERTIMES和EMPLOYEE_HOLIDAYS從其它表連接的表。我想找到滿足如下因素條件的所有記錄： EH.START_DATE < = EO.OVERTIME_DATE < = EH.END_DATE

3）結果表

EMPLOYEE_ID | START_DATE | END_DATE | OVERTIME_DATE 
------------------------------------------------------- 
1   | 2012-03-28 | 2012-04-10 | 2012-04-01 
3   | 2012-07-15 | 2012-07-25 | 2012-07-22 
5   | 2012-06-01 | 2012-06-07 | 2012-06-07

來源

2013-02-13 BlueLettuce16

SQLFiddle demo

SELECT EH.*, EO.OVERTIME_DATE 
FROM EMPLOYEE_HOLIDAYS EH 
JOIN EMPLOYEE_OVERTIMES EO 
ON (EO.EMPLOYEE_ID = EH.EMPLOYEE_ID) AND 
    (EO.OVERTIME_DATE BETWEEN EH.START_DATE AND EH.END_DATE)

來源

2013-02-13 08:33:50 valex

我也想簡單連接，但是如果我有什麼兩個表中有很多記錄？ – BlueLettuce16 2013-02-13 08:34:59

確保您在連接的字段上有索引（EO.EMPLOYEE_ID，EH.EMPLOYEE_ID，EO.OVERTIME_DATE，EH.START_DATE，EH.END_DATE）。如果你有索引加入快速工作。 – valex 2013-02-13 08:39:52

會這項工作？

SELECT 
    EO.Employee_ID, 
    EH.Start_Date, 
    EH.End_Date, 
    EO.OverTime_Date 
FROM 
    EMPLOYEE_OVERTIMES EO INNER JOIN 
    EMPLOYEE_HOLIDAYS EH ON EO.Employee_ID = EH.Employee_ID 
WHERE 
    EO.Overtime_Date BETWEEN EH.Start_date and EH.End_Date

來源

2013-02-13 08:34:40 SQLGuru

您可以使用簡單的INNER JOIN

;WITH EO AS 
(
    SELECT 1 AS EID, '2012-04-01' AS OD 
    UNION ALL 
    SELECT 2, '2012-08-14' 
    UNION ALL 
    SELECT 3, '2012-07-22' 
    UNION ALL 
    SELECT 4, '2012-10-30' 
    UNION ALL 
    SELECT 5, '2012-06-07' 
), EH AS 
(
    SELECT 1 AS EID, '2012-03-28' AS SD, '2012-04-10' AS ED 
    UNION ALL 
    SELECT 2, '2012-01-14', '2012-01-30' 
    UNION ALL 
    SELECT 3, '2012-07-15', '2012-07-25' 
    UNION ALL 
    SELECT 4, '2012-10-10', '2012-10-13' 
    UNION ALL 
    SELECT 5, '2012-06-01', '2012-06-07' 
) 

SELECT EH.EID, EH.SD, EH.ED, EO.OD 
FROM EO 
INNER JOIN EH 
    ON EH.SD <= EO.OD AND EO.OD <= EH.ED

來源

2013-02-13 08:37:25

加入兩個表從第一日期在從第二

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