Question

例如，请考虑这两个日期＆＃34; 2012-04-02＆＃34; ＆＃34; 2012-04-30＆＃34; 我希望获得如下所示的输出，但不应包含此日期＆＃34; 2012-04-02＆＃34; ＆＃34; 2012-04-30＆＃34; < /强>

**COLA** 2012-04-01 2012-04-03 2012-04-04 2012-04-05 2012-04-06 2012-04-07 .. .. .. 2012-04-29 2012-04-31

Answer 1

使用分层查询：

SELECT start_date + LEVEL - 1
FROM   (
  SELECT DATE '2012-04-02' + 1 AS start_date,
         DATE '2012-04-30' - 1 AS end_date
  FROM   DUAL
)
CONNECT BY start_date + LEVEL - 1 <= end_date;

或者，递归子查询分解子句：

WITH dates ( value ) AS (
  SELECT CAST( DATE '2014-04-02' + 1 AS DATE ) FROM DUAL
UNION ALL
  SELECT value + 1 FROM dates WHERE value + 1 < DATE '2014-04-30'
)
SELECT * FROM dates;

或者，如果您在整个月内执行此操作，则除了这些日期：

WITH boundaries ( start_date, end_date ) AS (
  SELECT DATE '2014-04-02', DATE '2014-04-30' FROM DUAL
)
SELECT TRUNC( start_date, 'MM' ) + LEVEL - 1
FROM   boundaries
WHERE  TRUNC( start_date, 'MM' ) + LEVEL - 1 NOT IN ( start_date, end_date )
CONNECT BY TRUNC( start_date, 'MM' ) + LEVEL - 1 <= LAST_DAY( end_date );

或：

WITH boundaries ( start_date, end_date ) AS (
  SELECT DATE '2014-04-02', DATE '2014-04-30' FROM DUAL
),
dates ( value ) AS (
  SELECT TRUNC( start_date, 'MM' ) FROM boundaries
UNION ALL
  SELECT value + 1 FROM dates WHERE value + 1 <= LAST_DAY( value )
)
SELECT *
FROM   dates d
WHERE  NOT EXISTS ( SELECT 1 FROM boundaries WHERE d.value IN ( start_date, end_date ) );

如何获取oracle中特定月份的两个日期之间的日期列表

1 个答案: