聯合開始日期和結束日期從2個表入單個表

表A包含像下面的值：聯合開始日期和結束日期從2個表入單個表

start_date end_date column_A 
1-Jan-15 10-Jan-15 2 
11-Jan-15 21-Jan-15 3 
22-Jan-15 31-Jan-15 4 
1-Feb-15 10-Feb-15 5 
11-Feb-15 12-Feb-15 6

表B含有像下面的值：

start_date end_date Column_B 
1-Jan-15 20-Jan-15 4 
21-Jan-15 31-Jan-15 5 
1-Feb-15 5-Feb-15 6 
6-Feb-15 12-Feb-15 7

我需要一個查詢，這將結合以上2個表格數據並提供如下結果。

Start_date end_date column_A Column_B 
1-Jan-15 10-Jan-15 2   4 
11-Jan-15 20-Jan-15 3   4 
21-Jan-15 21-Jan-15 3   5 
22-Jan-15 31-Jan-15 4   5 
1-Feb-15 5-Feb-15 5   6 
6-Feb-15 10-Feb-15 5   7 
11-Feb-15 12-Feb-15 6   7

來源

2015-05-05 sat33man

什麼是你想要的輸出背後的cryteria？你有什麼嘗試？ – Eggplant

作爲一個方面說明：*我並不總是使用Oracle11g，但是當我這樣做時，我通過** psql ***連接... – Eggplant

SQL Fiddle

的Oracle 11g R2架構設置：

CREATE TABLE A AS 
      SELECT TO_DATE('1-Jan-15', 'DD-MON-YY') AS start_date, TO_DATE('10-Jan-15', 'DD-MON-YY') AS end_date, 2 AS column_A FROM DUAL 
UNION ALL SELECT TO_DATE('11-Jan-15', 'DD-MON-YY') AS start_date, TO_DATE('21-Jan-15', 'DD-MON-YY') AS end_date, 3 AS column_A FROM DUAL 
UNION ALL SELECT TO_DATE('22-Jan-15', 'DD-MON-YY') AS start_date, TO_DATE('31-Jan-15', 'DD-MON-YY') AS end_date, 4 AS column_A FROM DUAL 
UNION ALL SELECT TO_DATE('1-Feb-15', 'DD-MON-YY') AS start_date, TO_DATE('10-Feb-15', 'DD-MON-YY') AS end_date, 5 AS column_A FROM DUAL 
UNION ALL SELECT TO_DATE('11-Feb-15', 'DD-MON-YY') AS start_date, TO_DATE('12-Feb-15', 'DD-MON-YY') AS end_date, 6 AS column_A FROM DUAL; 

CREATE TABLE B AS 
      SELECT TO_DATE('1-Jan-15', 'DD-MON-YY') AS start_date, TO_DATE('20-Jan-15', 'DD-MON-YY') AS end_date, 4 AS column_B FROM DUAL 
UNION ALL SELECT TO_DATE('21-Jan-15', 'DD-MON-YY') AS start_date, TO_DATE('31-Jan-15', 'DD-MON-YY') AS end_date, 5 AS column_B FROM DUAL 
UNION ALL SELECT TO_DATE('1-Feb-15', 'DD-MON-YY') AS start_date, TO_DATE('5-Feb-15', 'DD-MON-YY') AS end_date, 6 AS column_B FROM DUAL 
UNION ALL SELECT TO_DATE('6-Feb-15', 'DD-MON-YY') AS start_date, TO_DATE('12-Feb-15', 'DD-MON-YY') AS end_date, 7 AS column_B FROM DUAL;

查詢1：

WITH all_dates AS (
    SELECT start_date AS "date", 0 AS isEnd FROM A 
    UNION 
    SELECT end_date, 1 FROM A 
    UNION 
    SELECT start_date, 0 FROM B 
    UNION 
    SELECT end_date, 1 FROM B 
    ORDER BY 1, 2 
), 
all_paired_dates AS (
    SELECT "date" AS start_date, 
     LEAD("date") OVER (ORDER BY "date") AS end_date 
    FROM all_dates 
) 
SELECT d.start_date, 
     d.end_date, 
     a.column_A, 
     b.column_B 
FROM all_paired_dates d 
     INNER JOIN A 
     ON ( d.start_date BETWEEN a.start_date AND a.end_date 
      AND d.end_date BETWEEN a.start_date AND a.end_date) 
     INNER JOIN B 
     ON ( d.start_date BETWEEN b.start_date AND b.end_date 
      AND d.end_date BETWEEN b.start_date AND b.end_date)

Results：

|     START_DATE |     END_DATE | COLUMN_A | COLUMN_B | 
|----------------------------|----------------------------|----------|----------| 
| January, 01 2015 00:00:00 | January, 10 2015 00:00:00 |  2 |  4 | 
| January, 11 2015 00:00:00 | January, 20 2015 00:00:00 |  3 |  4 | 
| January, 21 2015 00:00:00 | January, 21 2015 00:00:00 |  3 |  5 | 
| January, 22 2015 00:00:00 | January, 31 2015 00:00:00 |  4 |  5 | 
| February, 01 2015 00:00:00 | February, 05 2015 00:00:00 |  5 |  6 | 
| February, 06 2015 00:00:00 | February, 10 2015 00:00:00 |  5 |  7 | 
| February, 11 2015 00:00:00 | February, 12 2015 00:00:00 |  6 |  7 |

來源

2015-05-05 09:25:01 MT0

我不知道你的限制，但試試這個：

select greatest(a.start_date, b.start_date) start_date, 
least(a.end_date, b.end_date) end_date, 
column_a, column_b 
from table_a a, table_b b 
where b.start_date <= a.end_date and b.end_date >= a.start_date 
order by 1, 2

來源

2015-05-05 08:34:15

聯合開始日期和結束日期從2個表入單個表

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