Sql 如何在oracle中获取当月第一个日期到当前日期_Sql_Oracle_Date

Sql 如何在oracle中获取当月第一个日期到当前日期

sql oracle date

Sql 如何在oracle中获取当月第一个日期到当前日期,sql,oracle,date,Sql,Oracle,Date,有人能告诉我如何获取当月第一个日期到当月当前日期的列表吗？假设我想获取2015年5月第一个日期到2015年5月17日格式应如下所示：ddmmyyyy您可以通过level伪列进行连接，并通过将其与当前月份和年份关联来格式化此结果： SELECT TO_CHAR(LEVEL, '09') || TO_CHAR(SYSDATE, 'mmyyyy') FROM dual CONNECT BY LEVEL < TO_NUMBER(TO_CHAR(SYSDATE, 'dd'))

有人能告诉我如何获取当月第一个日期到当月当前日期的列表吗？假设我想获取2015年5月第一个日期到2015年5月17日

格式应如下所示：ddmmyyyy

您可以通过

level

伪列进行

连接，并通过将其与当前月份和年份关联来格式化此结果：
SELECT     TO_CHAR(LEVEL, '09') || TO_CHAR(SYSDATE, 'mmyyyy')
FROM       dual
CONNECT BY LEVEL < TO_NUMBER(TO_CHAR(SYSDATE, 'dd'))


要获取从开始到当前日期的月份天数，请执行以下操作：
查询1：
SELECT TRUNC( SYSDATE, 'MM' ) + LEVEL - 1 AS DATE_OF_CURRENT_MONTH
FROM   DUAL
CONNECT BY LEVEL <= EXTRACT( DAY FROM SYSDATE )

| DATE_OF_CURRENT_MONTH |
|-----------------------|
| May, 01 2015 00:00:00 |
| May, 02 2015 00:00:00 |
| May, 03 2015 00:00:00 |
| May, 04 2015 00:00:00 |
|           .           |
|           .           |
|           .           |
| May, 15 2015 00:00:00 |
| May, 16 2015 00:00:00 |
| May, 17 2015 00:00:00 |

WITH CTE( DATE_OF_CURRENT_MONTH, Lvl ) AS
(
  SELECT TRUNC( SYSDATE, 'MM' ), 1
  FROM DUAL
    UNION ALL
  SELECT TRUNC( SYSDATE, 'MM' ) + Lvl, Lvl + 1
  FROM CTE
  WHERE Lvl < EXTRACT( DAY FROM SYSDATE )
)
SELECT DATE_OF_CURRENT_MONTH FROM CTE

| DATE_OF_CURRENT_MONTH |
|-----------------------|
| May, 01 2015 00:00:00 |
| May, 02 2015 00:00:00 |
| May, 03 2015 00:00:00 |
| May, 04 2015 00:00:00 |
|           .           |
|           .           |
|           .           |
| May, 15 2015 00:00:00 |
| May, 16 2015 00:00:00 |
| May, 17 2015 00:00:00 |

SELECT TRUNC( SYSDATE, 'MM' ) + LEVEL - 1 AS DATE_OF_CURRENT_MONTH
FROM   DUAL
CONNECT BY LEVEL <= EXTRACT( DAY FROM LAST_DAY( SYSDATE ) )

| DATE_OF_CURRENT_MONTH |
|-----------------------|
| May, 01 2015 00:00:00 |
| May, 02 2015 00:00:00 |
| May, 03 2015 00:00:00 |
| May, 04 2015 00:00:00 |
|           .           |
|           .           |
|           .           |
| May, 29 2015 00:00:00 |
| May, 30 2015 00:00:00 |
| May, 31 2015 00:00:00 |

WITH CTE( DATE_OF_CURRENT_MONTH, Lvl ) AS
(
  SELECT TRUNC( SYSDATE, 'MM' ), 1
  FROM DUAL
    UNION ALL
  SELECT TRUNC( SYSDATE, 'MM' ) + Lvl, Lvl + 1
  FROM CTE
  WHERE Lvl < EXTRACT( DAY FROM LAST_DAY( SYSDATE ) )
)
SELECT DATE_OF_CURRENT_MONTH FROM CTE

| DATE_OF_CURRENT_MONTH |
|-----------------------|
| May, 01 2015 00:00:00 |
| May, 02 2015 00:00:00 |
| May, 03 2015 00:00:00 |
| May, 04 2015 00:00:00 |
|           .           |
|           .           |
|           .           |
| May, 29 2015 00:00:00 |
| May, 30 2015 00:00:00 |
| May, 31 2015 00:00:00 |

查询2：
SELECT TRUNC( SYSDATE, 'MM' ) + LEVEL - 1 AS DATE_OF_CURRENT_MONTH
FROM   DUAL
CONNECT BY LEVEL <= EXTRACT( DAY FROM SYSDATE )

| DATE_OF_CURRENT_MONTH |
|-----------------------|
| May, 01 2015 00:00:00 |
| May, 02 2015 00:00:00 |
| May, 03 2015 00:00:00 |
| May, 04 2015 00:00:00 |
|           .           |
|           .           |
|           .           |
| May, 15 2015 00:00:00 |
| May, 16 2015 00:00:00 |
| May, 17 2015 00:00:00 |

WITH CTE( DATE_OF_CURRENT_MONTH, Lvl ) AS
(
  SELECT TRUNC( SYSDATE, 'MM' ), 1
  FROM DUAL
    UNION ALL
  SELECT TRUNC( SYSDATE, 'MM' ) + Lvl, Lvl + 1
  FROM CTE
  WHERE Lvl < EXTRACT( DAY FROM SYSDATE )
)
SELECT DATE_OF_CURRENT_MONTH FROM CTE

| DATE_OF_CURRENT_MONTH |
|-----------------------|
| May, 01 2015 00:00:00 |
| May, 02 2015 00:00:00 |
| May, 03 2015 00:00:00 |
| May, 04 2015 00:00:00 |
|           .           |
|           .           |
|           .           |
| May, 15 2015 00:00:00 |
| May, 16 2015 00:00:00 |
| May, 17 2015 00:00:00 |

SELECT TRUNC( SYSDATE, 'MM' ) + LEVEL - 1 AS DATE_OF_CURRENT_MONTH
FROM   DUAL
CONNECT BY LEVEL <= EXTRACT( DAY FROM LAST_DAY( SYSDATE ) )

| DATE_OF_CURRENT_MONTH |
|-----------------------|
| May, 01 2015 00:00:00 |
| May, 02 2015 00:00:00 |
| May, 03 2015 00:00:00 |
| May, 04 2015 00:00:00 |
|           .           |
|           .           |
|           .           |
| May, 29 2015 00:00:00 |
| May, 30 2015 00:00:00 |
| May, 31 2015 00:00:00 |

WITH CTE( DATE_OF_CURRENT_MONTH, Lvl ) AS
(
  SELECT TRUNC( SYSDATE, 'MM' ), 1
  FROM DUAL
    UNION ALL
  SELECT TRUNC( SYSDATE, 'MM' ) + Lvl, Lvl + 1
  FROM CTE
  WHERE Lvl < EXTRACT( DAY FROM LAST_DAY( SYSDATE ) )
)
SELECT DATE_OF_CURRENT_MONTH FROM CTE

| DATE_OF_CURRENT_MONTH |
|-----------------------|
| May, 01 2015 00:00:00 |
| May, 02 2015 00:00:00 |
| May, 03 2015 00:00:00 |
| May, 04 2015 00:00:00 |
|           .           |
|           .           |
|           .           |
| May, 29 2015 00:00:00 |
| May, 30 2015 00:00:00 |
| May, 31 2015 00:00:00 |

要获取当月的所有日期，请执行以下操作：
SELECT     TO_CHAR(LEVEL, '09') || TO_CHAR(SYSDATE, 'mmyyyy')
FROM       dual
CONNECT BY LEVEL < TO_NUMBER(TO_CHAR(LAST_DAY(SYSDATE), 'dd'))

查询3：
SELECT TRUNC( SYSDATE, 'MM' ) + LEVEL - 1 AS DATE_OF_CURRENT_MONTH
FROM   DUAL
CONNECT BY LEVEL <= EXTRACT( DAY FROM SYSDATE )

| DATE_OF_CURRENT_MONTH |
|-----------------------|
| May, 01 2015 00:00:00 |
| May, 02 2015 00:00:00 |
| May, 03 2015 00:00:00 |
| May, 04 2015 00:00:00 |
|           .           |
|           .           |
|           .           |
| May, 15 2015 00:00:00 |
| May, 16 2015 00:00:00 |
| May, 17 2015 00:00:00 |

WITH CTE( DATE_OF_CURRENT_MONTH, Lvl ) AS
(
  SELECT TRUNC( SYSDATE, 'MM' ), 1
  FROM DUAL
    UNION ALL
  SELECT TRUNC( SYSDATE, 'MM' ) + Lvl, Lvl + 1
  FROM CTE
  WHERE Lvl < EXTRACT( DAY FROM SYSDATE )
)
SELECT DATE_OF_CURRENT_MONTH FROM CTE

| DATE_OF_CURRENT_MONTH |
|-----------------------|
| May, 01 2015 00:00:00 |
| May, 02 2015 00:00:00 |
| May, 03 2015 00:00:00 |
| May, 04 2015 00:00:00 |
|           .           |
|           .           |
|           .           |
| May, 15 2015 00:00:00 |
| May, 16 2015 00:00:00 |
| May, 17 2015 00:00:00 |

SELECT TRUNC( SYSDATE, 'MM' ) + LEVEL - 1 AS DATE_OF_CURRENT_MONTH
FROM   DUAL
CONNECT BY LEVEL <= EXTRACT( DAY FROM LAST_DAY( SYSDATE ) )

| DATE_OF_CURRENT_MONTH |
|-----------------------|
| May, 01 2015 00:00:00 |
| May, 02 2015 00:00:00 |
| May, 03 2015 00:00:00 |
| May, 04 2015 00:00:00 |
|           .           |
|           .           |
|           .           |
| May, 29 2015 00:00:00 |
| May, 30 2015 00:00:00 |
| May, 31 2015 00:00:00 |

WITH CTE( DATE_OF_CURRENT_MONTH, Lvl ) AS
(
  SELECT TRUNC( SYSDATE, 'MM' ), 1
  FROM DUAL
    UNION ALL
  SELECT TRUNC( SYSDATE, 'MM' ) + Lvl, Lvl + 1
  FROM CTE
  WHERE Lvl < EXTRACT( DAY FROM LAST_DAY( SYSDATE ) )
)
SELECT DATE_OF_CURRENT_MONTH FROM CTE

| DATE_OF_CURRENT_MONTH |
|-----------------------|
| May, 01 2015 00:00:00 |
| May, 02 2015 00:00:00 |
| May, 03 2015 00:00:00 |
| May, 04 2015 00:00:00 |
|           .           |
|           .           |
|           .           |
| May, 29 2015 00:00:00 |
| May, 30 2015 00:00:00 |
| May, 31 2015 00:00:00 |

查询4：
SELECT TRUNC( SYSDATE, 'MM' ) + LEVEL - 1 AS DATE_OF_CURRENT_MONTH
FROM   DUAL
CONNECT BY LEVEL <= EXTRACT( DAY FROM SYSDATE )

| DATE_OF_CURRENT_MONTH |
|-----------------------|
| May, 01 2015 00:00:00 |
| May, 02 2015 00:00:00 |
| May, 03 2015 00:00:00 |
| May, 04 2015 00:00:00 |
|           .           |
|           .           |
|           .           |
| May, 15 2015 00:00:00 |
| May, 16 2015 00:00:00 |
| May, 17 2015 00:00:00 |

WITH CTE( DATE_OF_CURRENT_MONTH, Lvl ) AS
(
  SELECT TRUNC( SYSDATE, 'MM' ), 1
  FROM DUAL
    UNION ALL
  SELECT TRUNC( SYSDATE, 'MM' ) + Lvl, Lvl + 1
  FROM CTE
  WHERE Lvl < EXTRACT( DAY FROM SYSDATE )
)
SELECT DATE_OF_CURRENT_MONTH FROM CTE

| DATE_OF_CURRENT_MONTH |
|-----------------------|
| May, 01 2015 00:00:00 |
| May, 02 2015 00:00:00 |
| May, 03 2015 00:00:00 |
| May, 04 2015 00:00:00 |
|           .           |
|           .           |
|           .           |
| May, 15 2015 00:00:00 |
| May, 16 2015 00:00:00 |
| May, 17 2015 00:00:00 |

SELECT TRUNC( SYSDATE, 'MM' ) + LEVEL - 1 AS DATE_OF_CURRENT_MONTH
FROM   DUAL
CONNECT BY LEVEL <= EXTRACT( DAY FROM LAST_DAY( SYSDATE ) )

| DATE_OF_CURRENT_MONTH |
|-----------------------|
| May, 01 2015 00:00:00 |
| May, 02 2015 00:00:00 |
| May, 03 2015 00:00:00 |
| May, 04 2015 00:00:00 |
|           .           |
|           .           |
|           .           |
| May, 29 2015 00:00:00 |
| May, 30 2015 00:00:00 |
| May, 31 2015 00:00:00 |

WITH CTE( DATE_OF_CURRENT_MONTH, Lvl ) AS
(
  SELECT TRUNC( SYSDATE, 'MM' ), 1
  FROM DUAL
    UNION ALL
  SELECT TRUNC( SYSDATE, 'MM' ) + Lvl, Lvl + 1
  FROM CTE
  WHERE Lvl < EXTRACT( DAY FROM LAST_DAY( SYSDATE ) )
)
SELECT DATE_OF_CURRENT_MONTH FROM CTE

| DATE_OF_CURRENT_MONTH |
|-----------------------|
| May, 01 2015 00:00:00 |
| May, 02 2015 00:00:00 |
| May, 03 2015 00:00:00 |
| May, 04 2015 00:00:00 |
|           .           |
|           .           |
|           .           |
| May, 29 2015 00:00:00 |
| May, 30 2015 00:00:00 |
| May, 31 2015 00:00:00 |

不知道你说的“列表”是什么意思。请详细说明一下好吗？列表意味着结果将显示从第一个日期到当前日期的日期，并横向显示年份和月份，例如日期-月份-年份01-05-2015 02-05-2015。。。截至2015年5月17日谢谢您的快速回复。我将在明天的工作中试用，并告知您是否有效。：）我刚刚在SQL fiddle上运行了查询，我准确地得到了我需要的。如果我想看到当月的更多日期，我该怎么办？我是指5月17日之后的日期。谢谢。@Iftekhar您可以在<代码>连接方式<代码>克劳塞默雷尼克中更改条件，我如何更改？非常感谢您的帮助。@Iftekhar的确切要求是什么？显示五月的所有日子？