Question

如何在where子句中使用下个月的第一天和最后一天？

Answer 1

使用：

SELECT

DATE_SUB(
    LAST_DAY(
        DATE_ADD(NOW(), INTERVAL 1 MONTH)
    ), 
    INTERVAL DAY(
        LAST_DAY(
            DATE_ADD(NOW(), INTERVAL 1 MONTH)
        )
    )-1 DAY
) AS firstOfNextMonth,

LAST_DAY(
    DATE_ADD(NOW(), INTERVAL 1 MONTH)
)AS lastOfNextMonth

Answer 2

对于下个月的最后一天，您可以使用LAST_DAY()功能：

SELECT LAST_DAY(DATE_ADD(CURDATE(), INTERVAL 1 MONTH));
+-------------------------------------------------+
| LAST_DAY(DATE_ADD(CURDATE(), INTERVAL 1 MONTH)) |
+-------------------------------------------------+
| 2010-07-31                                      |
+-------------------------------------------------+
1 row in set (0.00 sec)

一些经过测试的边缘案例：

SELECT LAST_DAY(DATE_ADD('2010-01-31', INTERVAL 1 MONTH));
+----------------------------------------------------+
| LAST_DAY(DATE_ADD('2010-01-31', INTERVAL 1 MONTH)) |
+----------------------------------------------------+
| 2010-02-28                                         |
+----------------------------------------------------+
1 row in set (0.00 sec)

SELECT LAST_DAY(DATE_ADD('2010-02-28', INTERVAL 1 MONTH));
+----------------------------------------------------+
| LAST_DAY(DATE_ADD('2010-02-28', INTERVAL 1 MONTH)) |
+----------------------------------------------------+
| 2010-03-31                                         |
+----------------------------------------------------+
1 row in set (0.00 sec)

SELECT LAST_DAY(DATE_ADD('2010-08-31', INTERVAL 1 MONTH));
+----------------------------------------------------+
| LAST_DAY(DATE_ADD('2010-08-31', INTERVAL 1 MONTH)) |
+----------------------------------------------------+
| 2010-09-30                                         |
+----------------------------------------------------+
1 row in set (0.00 sec)

使用DATE_FORMAT()功能也很难获得一个月的第一天。您可以按如下方式使用它：

SELECT DATE_FORMAT(DATE_ADD(CURDATE(), INTERVAL 1 MONTH), '%Y-%m-01');
+---------------------------------------------------------------+
| DATE_FORMAT(DATE_ADD(CURDATE(), INTERVAL 1 MONTH),'%Y-%m-01') |
+---------------------------------------------------------------+
| 2010-07-01                                                    |
+---------------------------------------------------------------+
1 row in set (0.00 sec)

因此：

SELECT   DATE_FORMAT(DATE_ADD(CURDATE(), INTERVAL 1 MONTH), '%Y-%m-01') AS
            FirstDayOfNextMonth,
         LAST_DAY(DATE_ADD(CURDATE(), INTERVAL 1 MONTH)) AS
            LastDayOfNextMonth;

+---------------------+--------------------+
| FirstDayOfNextMonth | LastDayOfNextMonth |
+---------------------+--------------------+
| 2010-07-01          | 2010-07-31         |
+---------------------+--------------------+
1 row in set (0.00 sec)

Answer 3

下个月的第一天就是本月的最后一天+ 1：

select adddate(last_day(curdate()), 1)

下个月的最后一天只是（今天+ 1个月）的最后一天：

select last_day(curdate() + interval 1 month))

这些是最简单的解决方案。你将无法找到一个较短的。

如果您需要当前月的第一天，请参阅https://stackoverflow.com/a/28966866/632951

Answer 4

# FIRST date of next month
select date_sub(date_add(curdate(), interval 1 month), interval day(curdate())-1 day);

# LAST date of next month
select date_sub(date_add(curdate(), interval 2 month), interval day(curdate()) day);

不确定这是最短的查询，但它们确实有效

Answer 5

@DanielVassallo解释说，检索下个月的最后一天很容易：

SELECT LAST_DAY(DATE_ADD(CURRENT_DATE(), INTERVAL 1 MONTH));

要检索第一天，您可以先定义一个自定义FIRST_DAY函数（遗憾的是MySQL不提供任何功能）：

DELIMITER ;;
CREATE FUNCTION FIRST_DAY(day DATE)
RETURNS DATE DETERMINISTIC
BEGIN
  RETURN ADDDATE(LAST_DAY(SUBDATE(day, INTERVAL 1 MONTH)), 1);
END;;
DELIMITER ;

然后你可以这样做：

SELECT FIRST_DAY(DATE_ADD(CURRENT_DATE(), INTERVAL 1 MONTH));

Answer 6

要获得下个月的第一个日期： - select LAST_DAY(NOW()) + INTERVAL 1 DAY

要获取下个月的最后日期： - select LAST_DAY(NOW()+ INTERVAL 1 Month)

Answer 7

在postgresql中，你有完美的日期截断功能。

对于MySQL，我发现了一个可能提供一些想法的讨论here。

Answer 8

select Convert(varchar(10),DateAdd(Day, 1, getdate() - Day(getdate()) + 1) -1,105)

select Convert(varchar(10),getdate(),105)

select year(getdate())

Answer 9

以下是所有可能的解决方案。希望这会有所帮助......只需运行此即可获取所有详细信息

SELECT 

  DATE_SUB(DATE_FORMAT(NOW(),'%Y-%m-%d'),INTERVAL 1 DAY) AS GetLastDay, 
  DATE_FORMAT(NOW(),'%Y-%m-%d') AS GetTodaysDate,
  DATE_ADD(DATE_FORMAT(NOW(),'%Y-%m-%d'),INTERVAL 7 DAY) AS Add7DaysFromTodaysDate,
  DATE_SUB(DATE_FORMAT(NOW(),'%Y-%m-%d'),INTERVAL 7 DAY) AS Substract7DaysFromTodaysDate,
  DATE_ADD(DATE_FORMAT(NOW(),'%Y-%m-%d'),INTERVAL 1 MONTH) AS Add1MonthFromTodaysDate,
  DATE_FORMAT(NOW(),'%Y-%m-01') AS FirstDayCurrentMonth , 
  LAST_DAY(DATE_FORMAT(NOW(),'%Y-%m-%d')) AS lastDayCurrentMonth,
  DATE_SUB(LAST_DAY(DATE_SUB(NOW(), INTERVAL 1 MONTH)), 
            INTERVAL DAY(LAST_DAY(DATE_ADD(NOW(), INTERVAL 1 MONTH)))-1 DAY) AS FirstOfNextMont007,
  LAST_DAY(DATE_SUB(NOW(), INTERVAL 1 MONTH)) AS lastOfpREMonth,
  DATE_SUB(LAST_DAY(DATE_ADD(NOW(), INTERVAL 1 MONTH)), 
            INTERVAL DAY(LAST_DAY(DATE_ADD(NOW(), INTERVAL 1 MONTH)))-1 DAY) AS FirstOfNextMonth,
   LAST_DAY(DATE_ADD(NOW(), INTERVAL 1 MONTH)) AS lastOfNextMonth

Answer 10

更短的查询：

SELECT
ADDDATE(LAST_DAY(NOW()), 1) AS firstOfNextMonth,
LAST_DAY(DATE_ADD(NOW(), INTERVAL 1 MONTH)) AS lastOfNextMonth

Answer 11

SELECT DATE_ADD(LAST_DAY('2020-12-14'),INTERVAL 1 DAY) AS 'FIRST DAY OF NEXT MONTH';
        +----------------------------+
        | FIRST DAY OF NEXT MONTH |
        +----------------------------+
        | 2021-01-01                 |
        +----------------------------+
        1 row in set (1.06 sec)
        
SELECT DATE_ADD(LAST_DAY(NOW()),INTERVAL 1 MONTH) AS 'LAST DAY OF NEXT MONTH';
        +------------------------+
        | LAST DAY OF NEXT MONTH |
        +------------------------+
        | 2020-09-30             |
        +------------------------+
        1 row in set (0.51 sec)

获取MySQL下个月的第一个和最后一个日期

11 个答案: